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 0xb5fbf28b08ea485d9dba2cad4b48b59980af0d1a8f5af69f81e4365bceaf5225. 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/64456dc3-ac3c-42e8-94e6-1feca534cb1f.json and https://artists.proofprofile.net/proofs/artist/64456dc3-ac3c-42e8-94e6-1feca534cb1f.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 0xaa8907809dc0798eb1686ee0dbbaad179c408a858c7888776283b4606c406206. 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/USSD10704271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ab86c1801c95d0ad6f2f9fc0100cbd90c460a8c3761b08182c5c278b9f41b4. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USSD10704396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e3cc53cb84f65982de3b0526b5987b714f46daf4f7908929948762b5e9ae72. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:57:28Z), 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/USSD10704407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f46372f4bea810933605a8dde6b848226d4db7d56793dbf5aac6a6a1e24a5d. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USSD10704399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5fa02496694684e49d8d4e999839b2d097b8157f862a2802b90b5ad21d34a00. 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/USSD10704403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9ec5e0a8ea3028416821139196d5c95dd9209121059f6f3608fa81370349cf. 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/USASN1402767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa120d74226314f9d539c43ab35b556616fcdeea43bc146d50e8934dd00f9b56. 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/USASN1402709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107d4b3b74ba6d1e67803852cd9dc19a6cea32be9514328722a15f8e63d9a1d2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USASN1402710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd48849d78a4ccd77e18e1d5c79bf4386d3fd16870c7ec95e28bed03a1ac6746. 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/USASN1402711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f9b1a75182d12ac0855136e11948f073ddb9489cec99d565bc57cec803a9d5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USASN1402712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c68c01eec00b0aede3dc70a8ee68dca2a3e34ef3ff937e45d9fba58e4c3f4e0. 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/USASN1402713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1abd1dfca1acf1a8bedebbd7b83949f001c786a885c4fa4a1547f3b223f18b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USASN1402714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c2dcfedb3bd281b7351c5e5f3a0e8e8311974488bceea07f3a5252d0da6ad5. 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/USASN1402715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec01b55f6b2218eefd64931e370a4729f6e75e0197facac99cbd53550b4addbd. 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/USASN1402716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6a1898175d6f8bbf8085175d02f571366015aa6a427ddfc6b0e30ba3850f05. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USASN1402717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a539a5aa1e339bde1805235b039af012a6311dda55e9e36e70b7b2ef0cf436. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USASN1402718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacfc5456905c2a9bf13faeac9642a2a5bd6de86f700bbb682e9b700968c20fa0. 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/USASN1402719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a50eb87c41d8811b2190f12bc54e204d237837f2b61c463ba3262c8477367b. 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/USASN1402720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bbf82ca88434623e0e5da18c2ed7351cd5a7c15d56dfb4ebde1630203799de2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USASN1402721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2f8a475890c02a70f7c1939a301f9cb0710823d8e0486269109405f9975a95. 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/USASN1402722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7def2b68306990876f5ebb0411a04d367d04fc36aa5b0656e7ffd23f7ee0fe. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USASN1402723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b16b9d45d0a0d8c588041d3dbb83c4eb9deb002276dcbb46abf44736baf71d9. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USASN1402708.
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 0xd7c3d0dbbe2f093f1a562379ada0d6855ef0579701de3358ad186ede72c5f102. 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/FR6V80960040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f88ec4b653b96948c40282251be6c69759208bf5b906043d248b416c8c37161. 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/FR6V80960025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed64bdea594f85ae824e9195a3c851c0931a466ae026efe17c62b1d647ec0f7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USUYG1019596.
Ahora (Remix) (feat. Angel Doze, Voltio & John Erick)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd168b23d7e6a769f5a7fb3990c488f96537bc251d50ec4719caaaea20e4c674d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USUYG1044965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d3f336312118f3113a61848a94a2238609f78c77ecc6e8140d1d1eec0ec3e5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USASN1402951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b23361e5d919c6d1f6c1d59817e74c3c2f122a22146fdcada97d5cf7f7a918e. 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/USJE61300998.
Nico Canada Presenta A lo Under, Vol. 1 Perreo Perreo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72057913992b0e74d8c9c5442170831c09d8de9eecc207309726ee410cf12d25. 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/US9PJ1200031.
No Te Des Por Vencido (feat. Jenny La Sexy Voz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46eaf2d0c09f91204316461551c4d04814507c663e3c90f7c78d4640ff451326. 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/USASN1302297.
No Hay Amigos (feat. Big Mateo, Vakero & Poeta Callejero)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff0599c8526a02af300ebde22c335ca98f8c0c7c619f1faabec25970df4d6e3. 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/USASN1202074.
En Mi Habitacion (feat. Jowell & Voltio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e6af1f7637f2d13028b90f40eac9d5abe9d70b563fd2451b6d75513c0c286c. 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/TCABR1321976.
En Mi Habitacion Remix (feat. J King Y Maximan, Jowell & Voltio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae0048d63e6b5b223528c9049961f80691a396c2d3c8cef6c2969e6086085b3. 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/QMUCK1450672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0505b0ac189c69a7c7b612dff67d3c0a5a466c605b7e13628ff219ff2741ae1e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMHUY1558378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199e911321e52d07167e013ec3d7f1616970ca6bce55590ae6182690be2f7516. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USUYG1017869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f0f1f25a4a21b7861c2f8a0ea0f2c5698ec92ce8d6ed69b664ccbbf149345f. 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/USUYG1017728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dcaeb30b08e1d5e49b461dc2bedf4644000c0230ff70bc3e85ad4057366f4f9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USSD10704205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b60347b669688d8b18d5532b1ec4f421b468d189623e25fc31ee173b282889c. 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/NLCK41052837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa759dfeac3bdd2107af69fb525df57a8ec3b9672b25bbdf868542438141efff7. 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/USASJ0920013.