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 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 0x5b2b563b889cd5bbc822ca533243d99352ffb8a307100453eb6c178ce6c013eb. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6f011ce2-5930-43ef-ba11-ee24dbdd0ad4.json and https://artists.proofprofile.net/proofs/artist/6f011ce2-5930-43ef-ba11-ee24dbdd0ad4.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 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 0x5136e3e75386e37cedd0a6c74cc65134acde2ab214669bb557ba3b1062869ddd. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZHZ51933872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82ab43cf67e5b7bb5dde09bd55beed04366224aaceb99b2260d6f989820cea4. 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/QZHZ51970508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937ea6fdc76045c1d1d434d0642f29c99bcecee3aedd2b56935a25746564e22f. 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/QZHZ51970509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3bd8ac15389d34278948789265ce517c896ceb4cf937f9be35605fbdd80c7d4. 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/QZHZ51970510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f137c80acd79bff2ee6f36bf8a81ee4ee304c01c0f73008ffe2f75075c18fd. 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/QZHZ51970511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07577728960bc417b2c071abc1cdb88eeacd77f7bf231fd4897cc2daef667642. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZHZ51970512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c531f3c3d6329d9f7a519ab183a010b858896753da2627bea4863906e2a3d22. 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/QZHZ51970513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb069885939a8d16219b3b2084f9cf058baecba650b2553d2cfa9197989f828. 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/QZHZ51970514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d03969936ff932305b9cc7a259aea82b8fd893f0eb1a80c50ddd3a7b5266c33. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZHZ51970515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0165467d0d14589ce71371776ceaae707bd1e9ccc2c4d0f202c34099397aed06. 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/QZHZ31900813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289c0aad376b5439112697561dbff6cc32d5bf6e547fe9a425c7e45010966fd0. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QZGLM2004637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df66bcce8ceb96f9677acb26f0a6c0b84750acab0c106e3f58e0c83eee4301f. 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/QZGLM2004638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a21fbce21db315431ff39b493704c5eff8ea7d6b4ad58bf2966e5931e5ecdc4. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZGLM2004639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa554ff96b8d3ac7eca53260378e1375c89f8c6a8ab07296dad5b9fe98c8fb9. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZGLM2004640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef08556152cbfd5c4a7dd04b72575e1cf73a55839dbc59290e0ad9f69073482f. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/QZGLM2004641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae77c724ed2e4101e7cf8b9a887e0d1ea0cc945a2965a1b10fb319b2c98101b. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/QZGLM2004643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d517010fe3b22f7704183732626cfd8d9ad62789d0f5f191f2ab6f0f6455c2f. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/QZGLM2004644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602671f92aa89fbf5dbdd396080be06f3670225a0c84bd66ffe00a2bf06d30d8. 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/QZGLM2004645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152d5ac4d587ac0f684887ce2a798aa0a5aa2873f868566a1fa3994a85f5cf43. 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/QZGLM2004646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc666946c7139a91e568912d04577ba54957381065ae9d8252c55715b8c2a30. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/US7VG2034567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d2ccb587f273eb137bbdc78daa1063962a5f8afc03d8da8d2098869aed0972. 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/US7VG1915613.
En El Barrio Donde Vivo (feat. Jose Kuervo & Xoner)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19984d4017a1a821681edb1a28288697560763e5e30f532fa6861419cd4d3c5. 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/USCGJ1929029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491f85bf97d71a83ac86a2fcbc23b1fa7a9a306452b4938a1fc90ae6ec382495. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USCGJ1813320.
Perra Vida (feat. Sid Msc, Artex Msc & Jose Kuervo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f75485fa5aef66518098f63852fe67dc287935d266724145b37b0239e0e5f85. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/USCGJ1813329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02f9416209dea224350b95eff83345b6c7ff55d33258add84eac13f4ff91fef. 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/USCGJ1929028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313dc30d2c3f87bb286918b5f47bea38ff38e947f7483a42343f6ceaf599ae05. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/USCGJ1954491.
Sonido Malcriado: Guadalajara Vibes, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa61355eceeeab9b749c9694cb29e5e21d7d57ac06f06a89fdb4d5324262b48a. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/QZ5AB2033856.