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 0xe6851964b8b71f5fceb941cbfd3588e574e1627c6080a8b68892fe500315caa0. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b0a1eb81-79a3-4385-8b4e-20835bba3c64.json and https://artists.proofprofile.net/proofs/artist/b0a1eb81-79a3-4385-8b4e-20835bba3c64.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 0x2ed6919e94e282df3989e53fa51a562dfe1bb3aa32aeb16f3c34538a5848e408. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/MX4971534606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e7b6502d07438d2d5d8cd8f02fc688eb5661a08cdfdd28359dfd761010af92. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/MX4971534608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897af69a514aaf0c72de17ea6add714bcc8f3f2f069cf6797d1a7677edfc370f. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/MX4971534621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6008b61c85b3ef150450714f9bfa954f2622f417f576e01234f5c2ea7b42d423. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/MX4971534599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fffd6f0baa463ac708bb89ce021ae3981e6461a85a52cbb58170bfa8298213f. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/MX4971534603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b1cf1cb0efcd2a7af629289a32f97a6bac88ddecb4c18118dc089e17e85162. 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/MX4971534117.
Reventón Titánico Presenta a Luis Ornelas y Su Grupo (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c7eae15083fab4c874a5aa28ad8cab08bca2300d575618780e583f7ddca941. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:49:29Z), 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/USANG1915826.
Te Están Matando los Años (El Genio del Acordeón)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e87dd3eb8fd75ecbce2a8d40b15c721e646ef15b1ba17c38f8cea3d253190f0. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/MX4971536846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd995e4e2b51daf5f3c5fa18d75218a85716051ab36207a9134d334219044fb00. 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/MX4972140385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490db547217b73d0649f5db21623cc556e59e14bd2e0ef7d3fcf980090b10f67. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:37:43Z), 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/MX4972140387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa876c305cafd7d645cf7f5492a6160d50852fbae5074f9816daf7b31de452aec. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/MX4972140389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22089074f4cd03172739860dd9732ef3b9ec9f5925c65635a294b2178501e995. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:00:18Z), 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/MX4972400850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8190f128d90a6e22bc36ec071ed59306bc504e56430c38363bff1d363b675059. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/MX4972400960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe294c5bed10a44b0c0e539656d5db4537b772f790900a18e70c321076bf39f14. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:42:32Z), 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/MX4972400965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0fb9b6797e55f26b290fa2d4646bd344fa3a50a67d45ae58d3c22d424edfb8. 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/MX4972400966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02a59b4d16e4f11fcb955fe6afd7788e7a490d26d39e3deb8c01b1466edb6c4. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:09:46Z), 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/MX4972500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92f79d8a0de52ec2d17f7bd1b153663a0279d9e8808029236e9dd791104f849. 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/MX4972500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d7ee1639c4b26949914e9128495eb2f2c887878e1bd4ad7b7f41b1c8b6b76e. 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/MX4971534711.