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 0xb1eb42fef5dfc6adcfaf930e7f276579060b323a869bd7d5c7d7410228afffe8. 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/e5bdf305-f591-47cd-b25f-82b5554fa15d.json and https://artists.proofprofile.net/proofs/artist/e5bdf305-f591-47cd-b25f-82b5554fa15d.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 0x3ffde319f91d02654a18a2514efeae37eb9153639059274f08cf284e103bb05e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USHM81775272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84dafd4e2fa2909b2d89086c06d6aceb3dda236720175f62fb61a4e454ba2c2. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:03:55Z), 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/USHM81775274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c5519e6c6e591defd0c5878cf240816264d1f68f09e1df0e69a31fe6d5fe02. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:30:11Z), 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/USHM81775275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294a4004d37d87022add06d0110b4468d03e05a5a8da9be3f122100095e63634. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/USHM81775276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda718cfe0db362a6da490cc30568f8ae121dcdf381e6b3fa5f46e16c3d555bfd. 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/USHM81775277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129631cbd532b25dd889d1a5f62d5992db7f80f73bde23c63a3230b3325ee20f. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:15:15Z), 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/USDY41944514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fabf91eb81e1f29aa3080eeaddb7c78aafea1b17448bf5829c74348fb9c02c0. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USDY41944515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20cc40cd2a17fb22f366286381a675fa3adb8e99abd442ce43d73389a6501dec. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USDY41944516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461e051afd3d36ae4b59ffa1a47ffc8d3db84e14f61e1556b5bbd7f8e7d68628. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:32:34Z), 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/USDY41944517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4cd0a86feabc43b1b5653d2f8cd9a217d0676162f986db378baf65279274d97. 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/GBMA22599964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9b63f9378a1f6cf4d3ed12d27ff1822bfa598514c718f69b3abffa6a0a07e3. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GX3Q92090653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde3a1cdeec30d2995e601d934b1e927f84a3dfe842ae850391591153bce9fe2. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T05:00:20Z), 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/GX3Q92092418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310d599d2f990d6342fdeaadd3fdab7354a53e998754f73367ca2dcadb4a7508. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/GBLFP2038871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc732362f5798529236174d16c2f791468f13b0f650cc982e261e8b497edbfc52. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:44:56Z), 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/GBLFP2038872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547743e3988fd9da6cc362f5695ff7aa0578bd2e331809c7d68b6e40db2534ba. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/GX3Q92092419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b59740a4f32716846d6c760fb712719ab059f183518bcf3bd6f21ad15657962. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T07:21:40Z), 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/GX3Q92092420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad706c62a94ee482c04cee460f801453851bb5faa2eea02e8129a39e45e15366. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:04:45Z), 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/GX3Q92092421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e9c8d526ab8cb5edb1ff81fd13b26e27e8072306dea602d5882e85ad5187df. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T22:42:27Z), 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/QM6N22274103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517c0200e76f0fd2f0521a5103ca44ce0c09def888ba328a8088184f26115f10. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/MXD782402291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f32a3c6b56dcb693deff979ac250f4d970610b36b75587ac49a1f78a4a4615d. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:46:04Z), 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/USA3D2439702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e965d201921be2b2ae4b719579c7141489589d6fa9170d75b464bc0da0c194. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/MXD782402513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca5bea803bc3465cd306c2d35659cb88f9ffae55c52d634247fe8761114997c. 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/USA3D2439701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f32a3c6b56dcb693deff979ac250f4d970610b36b75587ac49a1f78a4a4615d. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USA3D2439702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517c0200e76f0fd2f0521a5103ca44ce0c09def888ba328a8088184f26115f10. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:53:05Z), 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/MXD782402291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf9883d51c9d93b5b15354d3e9db6c6f608af3fd603a8725de88a84570ffdd7. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/MXD782402504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090c63fe41c6c642885bbb15fcdf03b3e35736f047b13ddbf41819492ff59a9a. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/MXD782402507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e965d201921be2b2ae4b719579c7141489589d6fa9170d75b464bc0da0c194. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:45:58Z), 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/MXD782402513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e854d079886df80352f51d6de8b328d4412897a73b0079edaafa0876f1217e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/MXD782402506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe822e9dbd7c5b24572004b3ebb37a28cffd995281625a40e8eb515c9656a7746. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/MXD782402509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83385aaca95fcf97607de3f07dd36b7bcbf40c22742098862b110668b3024d2. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:13:52Z), 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/MXD782402514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153187c5434dfd070cdeb3be904cb619f9d24f6bc1c3d290701511cd4053e5d9. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:06:10Z), 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/MXD782402510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbfa6ae8f9df794226dc37d149fdf8b97ccb3b4c93cda0e959fd1568b164a5e1. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:36:58Z), 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/MXD782402511.
Martín Delgado Presenta: La Otra Música X Airelibre​.​fm
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4253bfd85c436920b80fb033c4315f7458997a586aa2549fced837ba3688e0. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBLFP2047070.