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 0x472dc1b3f0491ada0ea4a89aa392c4ce567b68e0b987a6f19e9db613c820dbf5. 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/9e9b9121-638f-4bd0-8464-02a4d228bb42.json and https://artists.proofprofile.net/proofs/artist/9e9b9121-638f-4bd0-8464-02a4d228bb42.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 0x421271660f70a565be5195ab35500983b8afa927e70a337945a7cc9b13c939a1. 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/FR12Q0900358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98457d86b93a5f145ef65c0e5bf53f6c91b4cc6d8341a161ab7839f609aebf66. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/FR12Q0900361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c8ee4fcc5a5c95a7bfac66a833dc6b79d93024f44b26a73d2f60cc572cecc7. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FR12Q1200650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5e35125cde2196cde54259c170c1ecacba0a2822dc5c2c9908df3389a3a251. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:54:50Z), 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/FR12Q1200651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9995f17e6599e8cf94841dc85872c569135fd1095f03155848fd86288983c9. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:09:01Z), 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/FR12Q1200654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22eb932f6f6a1d0f2415b087a9f4d80289556aaac20934fa7c05129e7638e1e1. 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/FR26V1530645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469f28daaef67d783277c16a69863c468989ccf6a1ba85103469c4e336776c4c. 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/FR12Q1500840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf7cf6519d843765340c6f59e01b6e1ba6a036bdcc006a15e30aa8f349d4956. 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/FR12Q1500842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98dad03c0bf7d390f8ee2f2bd43a13178cf6ae925ffd3a3359188f3c9c2a88b8. 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/FR12Q1500845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad97a4e59ae07ddf15928b3bb2d4e52a21cf3d4453c012ad8ee905e662c8f1b. 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/FR12Q1500846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384676b6cf5fe151e909c602f539e56d94218fc8007ddc1f09b280923852ff0d. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/FR12Q1500848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984a5204e91bf74d1c33e1aa536bb59041ea4ddb9c6d18d144defbdf79bc8a1a. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FR26V1628294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469f28daaef67d783277c16a69863c468989ccf6a1ba85103469c4e336776c4c. 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/FR12Q1500840.