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 0x529f3b1e5df6201a10b348fa326c24a8054065a2aa6bcb4b68ad2ed101f399be. 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/0eb12814-4e88-4b83-b22d-b06eff74eaa3.json and https://artists.proofprofile.net/proofs/artist/0eb12814-4e88-4b83-b22d-b06eff74eaa3.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 0x147738480f46dfe7a32e23f0489db9a56869c929bf4a9dc7e868c157a304801e. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/BXIV82483850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1511037b6877e43e45b73c0efdb5ab58a1fb040eda464550be0f998b3e9e09b9. 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/BXIV82451368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78e9220a271d2e066cf22f7d5d410f57186a0e39531525405b1a4f24bfba3a3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BXQZW2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f232764135dff03f6736c3c18ed23d7a6fe77e927e49cdb36626d8989a3d640. 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/BXQZW2300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7778eb1482dba716574e15e4ca7bcd532c307763dc61d1e3072f972381dcb1e. 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/BXCZM2300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833bcc69029a11f3650e42dbf986ab47649a8fb597b042cb8506b896cec177df. 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/BXIV82284564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b04d05e4173771d2265d23ccb1df209b7ee7f2f1f19dea7d2773d211cc9fcd. 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/BCLVY2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5150b89d83244a293262c60cb7d975fae7b7a9f40ab3d60819e92c1b59b41cc8. 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/BCPY02100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e2d9c5de0b2da03178035cd0a9b7a627a982734fa0f3a78f36a5ae0b2c610a. 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/BX0902100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105bd6b3270d35be41d6c4880cbe9732d6310e5de2936e4bc28453c49976448f. 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/QZHZ52117068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3967526f63ef199384329e53df29dc0f50bf1ff6e52a51e18d928aba8f15e05f. 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/QZGLM2196292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29943a4e9069f5e05d2e9fe3aa9b6a1ba9cefa703a719f1226ed312c7f0bc75. 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/QZNJX2017206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab4363d8dbeccd86df23332891166c5fcc2e13cc830f058d33c45f45e9e714a. 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/QZNJV2055308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4540464379d9aed7959cb704f4094889f3a725bb52a6ddfc883b3908d197ef. 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/QZHZ62002705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873ae218666e3ca9ece291b8dc4b8c6e80475a71b4fd8733b0e9d0e3f88007a7. 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/US7VG1817639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c2ccb0d4c6878a6f0ad22fe4cf2ed72833195b7d7276d57bf91dfec0afdf3a. 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/QZ5AB1895440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6e45c3e20f86e1c9aa9da047d4d4285d1cdb7d9e1a50cef8bb68b47b90d638. 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/BXIV82343468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c0fae6269d3bf26727c4d1a7cbb5e1425eb1754b74d78fbabcb62cdad50911d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRP6X2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979d05d662ee4839a0a379378f5cadfbfbe47d460a1e092e1ca7cda76e02f99b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BRD1E2300141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e83bc34d6eedcdf090ce1e13b0e01723908538565a9b68dc8407ebc3399b48. 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/BRIXW2200011.