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 0x88c2de63b17d8f6a815ed283538b27d5feb04877aeb3a3bec93a12fbbc0fa012. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e308d45f-e773-468f-bd1f-1f68dfb61b9a.json and https://artists.proofprofile.net/proofs/artist/e308d45f-e773-468f-bd1f-1f68dfb61b9a.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 0xbd86ab2f6cd77714927ee1dc34d9fa95c4d9a26148c4a8584e6d2982714820b7. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:53:03Z), 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/QZMZ92077466.
Cumbia Cabeza / Papa Garrón / Sos Botón / Entregadora del Marrón
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a2affa42d884210f32cd9276844b138646d30f3754d8434c4f2c7b3a9206be. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZNJV2082788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf43fac980b6171064b5c53292dd8d161d6ea8ccb6a5795190079b643e8e4dc8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ARC6D1800028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cef136a7c38ffccb421f65a95c4fc4a84aa280d77f05d8cfc73e9cef7d0ee4f. 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/ARG991043488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d831f4d39a186e1a4bd0eef2d43b210eaa73889ca4f998400a7599b1d5cbcf6. 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/ARG991043489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5b71939f855e1d9c67cfd0a208361ded3d6d5e535e6d82addb814b0bc3261f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ARG991043490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669906bbafcd91814cc3fe53a6c1fa59508faf33993f2639bca18aa40966ddc8. 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/ARG991043491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec5988a5de58090c5e8009ec0025232dc01ed567161fd4a6e9ccd646ea233f8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ARG991043492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06f93953a00699ce5ba7e8da99562a0112fbb4c1aac57701f9fe289b47c2743. 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/ARG991043493.
Levanten las Manos Que Seguimos de Joda, Se!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c6896d99c0fac06cbd69b141d5db2cc259a1ca37d22069b51679f2ed82b4fd. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QMFMG1593910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a05635cc3df97f70d2414a8ec786fad49c013eaa501c5cf0b422fad35a21ad1. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/ARG991043486.
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 0x1ac7fca30807d818ae3252dde59cc6556b291f287ef36aaf58ff167cf8c3131e. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/ARG991043487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b78329fe432363e5cc114f8f569759c373522c0dc6b269533a2daf47c57fe2. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/ARG991043494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e655c5b99687f6e928e51700beca2ec0ec43299c4ce45c57779fc0e033c9cde. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/ARG991043495.