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 0xac6b59e44a99f25e71226f27ea0ccdc0a47b58c5d7a7971c50b68a4d6d2e7b35. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b2beea2f-0174-4305-87f5-65f956c0c68d.json and https://artists.proofprofile.net/proofs/artist/b2beea2f-0174-4305-87f5-65f956c0c68d.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 0xc45f26e9aa0292f4830a3d57098a0eea23e1b7f25e1384938b9db2fe68cbc514. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/EEHU32000217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728a215ee7912828f033506e4994077f9807c0d7d27a8b7f537f57644b98ee92. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/EEHU32000218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db67ef1781458aab076bc3fd3ee34fd71251e3ab9b4b2593c92fd6b91c34c3f. 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/EEHU32000220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f66445bbb943b5d70672e48aeed7211b6bacfa5d9022288d11e1031e3815c60. 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/EEHU32000221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc54f433e0c9aed85f0cab7aa2bb72ee163357b66eac52dcdedbbac5be93a6e4. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:26:50Z), 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/TRBUS2000077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414cbf59cf1d6ca3129ffdb90f2b10b3290fe246b6bab2279221d51ec1f9a41f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TRBDY2131404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05dc664a462423708fd4ef712645aa6ea3543253ad57a81a928e651542eab58e. 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/TRBDY2350303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3285d07010d3b1e9efd7e2f3ec289931960d5a924baa63bd1739fca5cbb35cf. 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/TRBDY2241508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05dc664a462423708fd4ef712645aa6ea3543253ad57a81a928e651542eab58e. 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/TRBDY2350303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d13fbc3701e820753ca016f11975bf278bd8ef31c56d9328f0c7cccbc47a6c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/EEHU32001547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c84ae80a4cfc010628f92659af57602ddf657ffdb729f392f774e3499aaee9c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR10S2591604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf360a8e7e1b3294fa27350966ab4b30418588c3cb1c54e4f6e881435d95478b7. 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/QZ5AB1857362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172fc5bec183bfdd7f38574c0b6a083a2ffb5442ffb3b69970e782d5dd1c5a7c. 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/TRA162100519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874f6ce829f6aa4ef7758e398af7795d68a2e37510b64eb901e0ab46c62716b3. 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/TR0012200364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20fa96621be8e699f9c34d5e43d811f3602b367652365aaf8355065ff6e03952. 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/FR10S2294230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10b2217a5ad39e3e848d6572fae98dcd3ae82c36c960434b1b3aa9ce9f6e5b7. 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/QZBRF1885403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7feb5f6ee69f59692fba0ca6c3be493c0e596273cdff0d6fb291e3a868e855d1. 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/TCAIZ2452763.