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 0x2740f50957834459180c7c8e12dd466f8d2d431355074b6cf0e3ba91549144d8. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/995e74a9-311c-4701-8f86-d613e7bd93ac.json and https://artists.proofprofile.net/proofs/artist/995e74a9-311c-4701-8f86-d613e7bd93ac.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 0xd3760dc7de621c9740d73a725d99b967f747b5af3e8283a0c1c9c1616cdb5f88. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:05:18Z), 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/BEEN91660004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fa7c5375943d8bc59b29d3e8eab5b28e139a738e60c2aa3b5e48d99a32e93f. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/BEEN91660005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac33315becc0c8efe95666a69394d670fab4d3516547b010ff24d9cdd32637c0. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/BEEN91660007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4f40222a0d77c05eff41f635312a5242d4b5264afa68eac6372fb75f454b3c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/BEEN91660008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ed2b21fce9104eab617ce1cea18ef2cebb9a1b591faff1bb43c21d7114c54f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/BE7GW1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0a31f863129d31662edde9216dc170a6424674f4a42620d434336a40591e8b. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/BE7GW1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926368aa540700e95e03072ab068ae52524330c9afc451ce1b15a666e040c228. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/BE7GW1700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd8153bef27efd6988af9dbc16a7a8775162aa208b6194623a6f244b1734c48. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:06:04Z), 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/BE7GW1700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d773a1bd437f902c4c6d4c3e7a7230b0d1d4b18a48a93fa147b96f7a3c2b5e7. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/BE7GW1700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4a33a83d35658f619628a73d2f02fad707d588962de75262c81b2d10c46ef7. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/BE7GW1700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438dbd22fb0bb6b84da8d905059fa53cca1ccada4169e58a06df0fc75e1aba14. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/BEEN91660012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3ea155c41d1286747d65b0a7a77c91d870f8d3904a26f455749f215cc61526. 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/BE7GW1700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc5cb00a5078bd9f45a1a85538faa6e523920654a2177e5e6cd4702ee6702fe. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/BE7GW1700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597393604e44d38ece8adea2629d4dbfa7f9f93d000657aa64f8e3a80adf9138. 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/BE7GW1700017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6506307e63f576df622071caace5761c7018d2e876f2270f6e4cf2ed9b3b43bc. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/BE7GW1700020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c172dfd052b6149265b353e2522f17e30b48577adfbd5b0df150a2da7338701. 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/BE7GW1700022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1a9535f9456805dfdff9f5d14176a7888dba2db6ff2b6875dbf47a63b195a8. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:05:14Z), 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/BE7GW1700028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597fd03d55b47a2a2c4fbf74d8837bc1e646fb1d58a7254ab08e078825d4e476. 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/BEEJ11710010.