Marcin Ryszard Wasilewski (born 9 June 1980) is a Polish football pundit and former player who played as a centre-back. He is best known for winning the Premier League with Leicester City and getting
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f4c5a23cbaaab2e1b72c01dc7aa3e6c5b893389c09f0d43255ce321b0a9b47. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f0b2ad59-1e02-4b93-ae88-e72cb4b2bc29.json and https://artists.proofprofile.net/proofs/artist/f0b2ad59-1e02-4b93-ae88-e72cb4b2bc29.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9127e4eeeec8af33731d703adaf072ab1019b7b78bc5e645b6abbb6ce3ba4259. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PL83D2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585dd1026a3a50d5be03515c961d068520d4e74788406df3e739b3aa92ecee3b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331441901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255c5fbe7589c52a45a176fa31d79d4800612eb419d68969899f93fe2dd6f4c2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331441902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079d5e369d385fb9ba875363238b086c13f0c4a8c6dfe9cea2bd74d4b8dbacdc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331441903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0dff1fa115d1d9279f1b92b3d2038d7628fc1712f0c38b72e0c4950b00e540. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331441904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d89ab607a5c6cc7572e7f18ff91d932182ea8db280643a94a7188290d04556f. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331441905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd48c7daf08997c08072a592477a8b22497341e74a1989491efa255721ef45f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331441906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5169785b31393fde386468774d9df1141688102abeed56f134a4667fdecde158. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331441907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28dbba4faa279eaa4c626d918c6b2acd85e76c8cb05ea60d1835371933b74061. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331441908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a70b2698bbc2515fc15511af055bf24c614fe67379e2860222c99484927ad5. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331441909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181fe1eaa5b931ae28fdfd8c0e8a75f07cac75eef358f97464700729fde29f55. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331336601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5b12caa131a4e129c365aca581993adca343d26304fc35694a1bc27cec8b44. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331336602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9743b124958cad7ce75535c75f495eb2196f60fc3a28b3a93c73c8a74903fef2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331336603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3b65ee2bc1c7960c020fb43dacdee472a029c814eb50673c2aadc06b314810. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331336604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818d211fda84556ef9867965d8def004283da113cd63e3413146f040933ae916. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331336608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07eacef1cebb55bfbc95c4a58a6afd9b8308922145dfeb148b5af41ce7589e77. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331336605.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8874323ca5208acec67025cbbb296c6037581071606a9871cc88fb21b767b5. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331336606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53499e154e66aead1cf833a8b8d11a0f7bb7e2f65f3cc13208d8a270eadb6ba. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331336607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0669254139f411577c818701b29a6bd8517d8a9fdad21070eaa81afa5b26b826. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331336609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5835f99e4bd5f181dd1a1438f46ba3662d1e85eec1e3b6a666ead8b2c21d28c. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331336610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea78c0f5343537cfae9718c04da28e9b80756d9c75bff462d083b3b952321c7a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331020801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7bd56cb86fc32a81dfc44879916b7ced0f4fdece31f1b1ec0c36f088f946d0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331020802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da063595988003d3070ce5be6661d46c9e43434c565066801370b468b3d7173. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331020803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1845272b52356ac22c734eaf0acd924c378768bc901c84ea3a6c69e72d29d621. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331020804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e87aab5a99343f693fc60788873761345661756fad5130be8986b4b291f6b1d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331020805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc29959b64f62e2c66f9b22c4b046a88833772dbf87444be395244990319682. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331020806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0df77671f9c836d5a858e99190932874a8edaaa7d3ea773eed90c288f10dde. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331020807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450a10e3350d8db166875198494a682dd2acb83e98b7ba1b0f73197ccce5efea. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331020808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51984ac31da3736408e2b7a8ed579ceacfda761cf6427e606b1f8299680ce835. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331020810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616a9370deb8ad967ba25cf35e62d3645b7387d2e006118037f43a9c81ff4062. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331020809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c949caa2a90fbe629068cc48ef8412bd6ce921c428fb63b5299af8f322d8f6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB330489101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad2b2f2cafc3987e2f2aac9f28860f63bf2b7a7f0319cb1d7f3af593ed0522d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB330489102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaaa9955db34a0b8950104383716856a6931a48e77939f067d3c6d04c90b8a13. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB330489103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6fbbdacb9db7218f3cc5a1aa91bb7aae301d03c553efbd63a9ca9864094b45a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB330489104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ddd133c791fb8bd8da9f1e5790420c6e3faaca8aeb837b64d6f6e098d98a7d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB330489105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe230256d6f7d53a7f719b6aaf62cd9a839b3f3acf7a70f655944254d8cbf6de. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB330489106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76f285d68d47694f7989f6a0df9b9e908cded493cb00276386f976d1551c0c7. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB330489107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1d4dd8b9084379c8097a3264e52de29082372923e4b853b55d85acf23eed85. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB330489108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98675726d7e1af6e4fd86dbb051f871ba98016577c8e9d5b15f08869379043e1. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB330489111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8bd3c1928d94f40ac0188ff1d72425490c7d3c18c12aaaae79e79281fbf50a4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB330489113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571217208cce5e0c103c9187bd1b6208d2e00d5f2614b5e172369be44bccc722. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB330489109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a4084a4055f7dd5443a73c98b508ba12db3861a630e7238ce12ec8d8552f67. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB330489110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1903edfe37e25ef894fba84d43ee1a2415c663d6da53fa5273b14b5d9e82fc5e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB330489112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b86da50aea211bf7058d7ca602104b66f3c96be061f434aab7417b17d8131e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USJSJ0700402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ac1c723c86c69f93f1ca5c18c1fbcf22653a979835c71999854cc3e9b2fc3c. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USJSJ0700396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946b7ed0884075c05470f5de39a688a4404a7941475faf54b1e9073b8ac7339d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USJSJ0700400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d17c1d71056bfc4c50bd3662687251020c0d684b7e541e5563e50836fc8170. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USJSJ0700387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15610bbb8baa55b24818bf5dfed5f0063739803283ce545406f58a154feb7ffe. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T23:37:36Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USJSJ0700388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75874ed4d8d6ec2466da3eedf174d1d35461e22c3583dcc38c55a0148a255d2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USJSJ0700389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129d90b1277c0bfe23aa8e47445ed64eff0dc19f325e408dccb6e4debc223ccc. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USJSJ0700390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135b3f034ea93a39d343fca35a5b0680296ba17a19e66b93511663aef59f90c5. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USJSJ0700391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9fb3c790c6cab19233276fc408154115a1115a595d41d1110be55ba55f068ac. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USJSJ0700392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a75beb32ad8577baf0695b6528f6e0427c66a62d89bfba5d3d0169eec4e2cc. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USJSJ0700393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ebaa2065d102688b4d22032a94454f3429e9ee06a992dc41b4fc8d224b2d693. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USJSJ0700394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a13d24d7835558b6c597777cc15877e29379a3eddf2cad3611c8b794d6201c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLUM71600693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39900be05098587b76264a187725efad809f492bb4e3400ab0fa488623dbc0c6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLUM71600694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26fbda841cf5bc95bbcca08cf14c65de33f3c624639a0a21aae70c7ff84ad083. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLUM71600698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4381cdd168123de01ba57bc2ec41fd611bee2c9f89716a8cf6d030e2abd14b13. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLUM71600696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89684d469bf8ab7b92ab2d739129783656e4e800ddbc6ba11e48a0e140f50b5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC702207404.
"The Dark Eyes Of Martha Hirsh" przeplatany fragmentami listu do Rodziny w Warszawie (Wiedeń, 1 sierpnia 1829)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fef855abcf1dd6c1e8e38c437ad81e62b2c7a86371a746ed09ec701f48211d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC702207407.
List do Jana Białobłockiego w Sokołowie (Warszawa, 29 września 1825)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3916d70099d732c0ec077cace18990ca1fff94552e326cb097db76a6dfa377ce. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC702207401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f32502b7fe14522eab431d9ef376afe7477abef079be00ed5c0b2c0ac73d33e. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC702207402.
List do George Sand w Nohant (Paryż, 2 grudnia 1844)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36fa61f83835066bf44d998f9257ba4b7bfcbfc4d2e74579af0f2f87d4760a5e. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC702207405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06752c4f6ef459b86a0012c671ae32eacb5bb3d619754a3d2b022ec8ef7b998f. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC702207406.
"Melancholia" oraz list do Juliana Fontany w Paryżu (Palma, 15 listopada 1838)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe306288e01d59d983a6235212a09f55e27844d1e2cc8f2534f4471356b39d857. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC702207408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfed1618edeb77d8e1686d655fab679e4ca33a7eb481fcb7d0613b0dd82bcc44. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC702207412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa932cbf0b9a75082ed4a9834ddc050772732c100ec29f19ae06c15cb31f6e342. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC702207414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e59964e51f46f4798f6410e3bbd60bf8a54810d2f52761ee86395fb5901b71a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC591600023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8403cf78868c784f40328dfe0f65ad899387ac07699791e79137aa5148917ecc. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC591600032.