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 0xfca2c4608a2bb34f5332779ec184a7a86bd53ff9d821dd9c8dcf00af912d0a2a. 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/e7b3f201-9770-4e0b-b291-e032d63ea541.json and https://artists.proofprofile.net/proofs/artist/e7b3f201-9770-4e0b-b291-e032d63ea541.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 0x8f21064438ea8567b3fdadf4e80156fe6f989f6bdca9fa3c12cfc4b619c0d836. Chain 2 (Bitcoin): anchored in block 958573 (2026-07-18T15:49:54Z), 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/QZ4JJ1675039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c3bda4090581cb0526e9ee326006fe2349dd29810da3f9eddd523b447306c8. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZ4JJ1674572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c4b9e9189ec6acf5534a44b3f7d6e0d090c98e691c1cf19117970f40a1f415. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZ4JJ1836831.
mountaintop in bieszczady and i am both sad and happy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d8896b537d2fa1a465ccfdeb482c470975118bd6133662e286e0b6fd390a36. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZK6N1976143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c751558349fe5cf7b73e99170768e42c094bfedf4ac7ef6898c6b1d2af5bd68. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZK6N1976144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f2c9e3cc6c5c1e03938f413a58bf1983b7502450904ce4f0086c4735ab3d08. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZK6N1976145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73734e1b43ad57d1b312f12f1feb8e2fa4c19194507ed99c3c72afb858e48ec5. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZK6K2040374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe130582102efa57ebb26c5e03015370ead5ff87945292c0b5b7ef7947eb27250. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QZK6K2040379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ee35b8723c03f7acc372c4e72aa6fa6d5b2d5d2abe55730de5d3fe35d30b17. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/QZMEP2018666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba8b7d3a8f8687449d15479f99232aa154c17b22f794565658556f8677618b9. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZFYX2106343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa851c272968efd026c66072868e892c0b3fa54d8c0e4cc3fe66d7c602e19dcee. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZFYX2154949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d7c2ac05ee8a05f4dd38fba6d99c41e51c6440fa6038004ef8b666d3f04138. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZFYY2112220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54a399ee478bdc9fb8aed36ad026a5b4bb759b6e6ed8ceef8cb9751a9d44e89. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHN82164981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd21608c9e2d67324410e2ffcfa3e76c8e7e85e2cafe034bc1caef1351969b66. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QZTAU2105361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638f256ed33e75f269c8e867b2433547162fba5863698a8ca4ca6b22a4e32cd4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZFZ62258610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad2957b8cd4b22e8875de6111a0397e212b05bb6796f735136c3c5f2025717b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZES62215987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae3de70789aef0983a88a8f6bbc8004a1512bbb858d27e7d566cd980e5ec07a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZHN52286895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7fd0c46e86f0813018d72f3b65c371c21cd91491766576c18e619ece2376509. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/QZK6L2275564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7475219ad9df3ccc74c90b78f155ce503d932c7e3fe3fe020eb98d2ecc7b95. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/QZFYX2376351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee193a6d54a4a6f5c95414345e166ad7b4b672524ec6d3cbc8b2d854cc54213a. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZWFH2379321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d8deb337a5788ed14fff4d3431ade47e08ec0c0dfebba01cfad5f36b567b5b. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZDA82544094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d182351e8d2c30c53eba0384f541456458d61bee731678185fe46fdd7f873e4. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZK6M2585843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba838d45ba775a59c9470a7df805ffecc8384edb857abf6ec897673d77f5fa1. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QZNWR2510555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe407a4f2a23ac36e9fa8b7afbc5cd324c2d9e53ffa9d13cd83044d087d03e00. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZNWW2581040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a28207f476c6935d7d0cc12918bcef315379d14d3aad750fa8afe1e13c5dc5. 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/QZTB62581624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883ed55d7de6d3797b7abe6da25e0ac15aec597b5ee20c2af23cfb7f0100b924. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZTBE2567302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0736274acad8669458b00a49c78dfd427eeace6ad3fbb6539e50664db296a185. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZWFQ2546596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10270cef39a026fb3306797b6ec9c06b34f499d180460ce79fbf3b677ab1769. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZWFT2567041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64440e32efa25ac753ede74f97d5d62209c00421211538ef9776cb50a28d952. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZZ782552495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1410741873e77566da536ce7e719bcbdc41d13d2d742feb645b813572ce418d. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZZ7L2569343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7faef8e0a25c33d400081ec81f2b58586e710d0c3312b55793c845d19321c2. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZZ7X2543682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49d4376b759cb8cfb6ef5739ae9af601d9ea5b371c77ca7e31424b5aafe1c4a. 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/QT3FA2593040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb347683df2cdf509cb6dce6d083d643d45eca8a8f379ec91ecc64be04e4596cc. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QT3FE2558302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a437cc44c92a30c5f8b562b63d0c4763c3b950bbe6cac205737a1bdaebc422. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QT3FF2541219.