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 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 0x7ccf6d75650fb0ae6e2d4449e4e7ae7bec049c7b5c3f4db7aa0581f773044c3a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a8b0dde3-6a08-4ff1-a834-3169088921cf.json and https://artists.proofprofile.net/proofs/artist/a8b0dde3-6a08-4ff1-a834-3169088921cf.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 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 0xafafe7d5fe64326002b7ea57f63522eb7922581d639861e617096ca338eaede8. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/PLC062363274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf012e4f5be3a73f68ae32365ebd44a912d75f0f45551cef2fa8f458bc0a36102. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/PLC062363284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3597458e5b8da64b6a48d3e7b718ccb9baad2d18d5c2684bd50a77a7db961eb4. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/QZHN81980340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611e107495e2fb4bb1e0f3798b7a9d8960f6d5232b0522fd12063e99fe872925. 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/QZFYZ2020009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3714250f0403b9b479273cccd726ef17574da7ba408f6079863ed0c929270e. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/PLC062363286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2151fc95dfedbd2f9ec52f900986b13a243927c71e574765f046d654c1e910. 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/PLC062363287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf334df8e02b482b5f3aaf466b095d480ec7ffa9c9e5a2f74eb1e23497d31ecc. 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/PLC062363288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe63e2d5685c2c8261f48e2180a29d151fd3d1fd062b9d0e73326d4483aa13ba. 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/PLC062363289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1058fe10339aca86ea2391cd91184ce656846f9dfe3450392180809538ad4bf5. 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/PLC062363290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42cd72da6a01c477444cc3a0c2c1f6f912e80747e474dbe5fbc2c5af21db0a3c. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/PLC062363291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a3b367baddd493e144049c72b9d06680eaae22b58e7fc63d26bf43975980ab. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/PLC062363292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0adf5bea36a32f11f6e08a980146cd58b20a16d7e4d3224dc0d486f7986136af. 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/PLC062363293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb96255becc43262b40faa052e4e231b9f5549a584a5616322c6a7f8c6cefbe7. 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/PLC062363294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7fb5c0dae5534210ad05d3fd7c51f2293b101963e5afd20d1e529ecb88ede3a. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/PLC062363295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69975f7a7a318f4eeccef407ce910f8010292f25fab3d9cb58d086e87188545. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/PLC062363296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0532841dad65612e67e7126e1d9f812562fd84d300fc06f04fdd5354497bc8d. 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/PLC062363297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18574bb5c67f6edb6b95833d8d037ba531df42a28d7ade456e134bbc47be2133. 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/PLC062363298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854d9c5963624d3862dfe9afbf5ff60460b4a583f08565970993acdc20bf3f04. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/PLC062258717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327bdac161c494ec042ffa74ed3052215513c8cf6fe98eecd05ce351eeb40f88. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/PLC062378923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63fe49f973889360a3762f39f22c096dcd692c30c3b9488473722e780528835. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PLC062422231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c055c91b8a2900ae0bb9bfc6c691085db53e727d95ae6314855b27648f0eb1b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/PLC062430139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920b1a04470abc237eec3eccac67fb26e852f63d0521af6595e25814c8fb4121. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/PLC062437113.
W SOBOTĘ LECĘ DO POGO A W NIEDZIELĘ NA MSZĘ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010fb04622edcc4f412294f9e8890b2dbb85622679798ace525b7561f2860a4b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/PLC062439627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9cea2b2ee53827ab3f7ff87df291567b884565233a32c1829fb3c9de0d170f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PLC062502044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd0f78a370516467b513c25ff55ecf55e4e4c9ee0c9ca26f2d04d0237c33b1e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/PLC062527699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e60e754db55ff67ba89c46bf83eeceeed45a2de49fea242493d8ba99107218. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/PLC062531645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3469c3b7e4d68814a6a8dbe860da2fb0b55e2f75111708ab2dc430b1eeda89. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/PLC062534489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce62b7ca54cf0eb23ad2cf009ae1530be9ae571c07447ff061110dcebc69bc1. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/PLUM71700704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa048b58b86bc07e6cc8ac6ab851f0b1b6995d598a84c015d1e7853935daa4619. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/PLB382400598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62d5122776ef9c6976d9fda40f001af50f6deeadee19c2909d10183a929ec41. 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/PLC062430961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62d5122776ef9c6976d9fda40f001af50f6deeadee19c2909d10183a929ec41. 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/PLC062430961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f52be299d7d0765fd559c06579af10b71091b546b2f75bc11e2d7ba57181a93. 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/PL98Z2400013.