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 0x78e6f77d595243c11871d9b296e633f37fb9acdd8fc847384b8eaf38b5d8b9dc. Chain 2 (Bitcoin): anchored in block 953630 (2026-06-14T12:06:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/30c702bd-4d87-4dc8-bf5e-8e53046750e6.json and https://artists.proofprofile.net/proofs/artist/30c702bd-4d87-4dc8-bf5e-8e53046750e6.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 0x7e16285d3da526d21d55fa625115bcb5786a6578939a69dbbe925762d2097ca0. 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/ES26E2417501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c9d4be225bac4d61ccd1531a60846b02e3a503cfe9cef2dce463716485c6c10. 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/ES05I2000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee269524bba027cbe74d1879828672ad6dbaae385211390e9a6a3b3240e357c. 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/ES05I2000022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee84eb2666b2dbf2423d27218d2caba18f426eab4754306b7b5fe91155b270a. 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/ES5682000076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15da81ba25895e6d893c6b6b7970316fad4a82faabf224f111dd05b1b97c4fcc. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/ES5682000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fae2513bd11e0ec972fba9ff6c77927db8f2ebcc3da8dc37b85c88be80fcd16. 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/QM4TW2020744.
Medley Marisol: Estando Contigo / Ola Ola Ola / Tómbola
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71362ab0924b7249ad549c7d22f164204f59553ca3ee7cc91b2b72b7f8208e7b. 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/QM4TW2023070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ae2604d762f715935c18d1deb04d98362fa616a7da17ffdba0140a94656a76. 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/QM4TW2020728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1ad432600297ac9d94883a5c6e7f9a2740d309d50cb380239389051f611721. 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/QM4TW2020729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37fac070903c2fc6389cddf322fbcdbd9eb3f30175459385043d749684b52169. 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/QM4TW2020731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0934c230650dcae05649190df2e9db58713005ecae2e658b6ae5646d71e4e59. 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/QM4TW2020738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9bfc0367013529759f48d9de202e9a96762ccaa1e3d6b3c266c1409b7b55cc3. 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/QM4TW2020740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fae2513bd11e0ec972fba9ff6c77927db8f2ebcc3da8dc37b85c88be80fcd16. 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/QM4TW2020744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e7c32ef5069c2f56b257767e02a83d231ccc41fc44e1c29991cdc07ab6d0de. 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/QM4TW2020558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2e804f130c1fb1f1e0ee5bb92edaddf642aefe63e23b46d4436e9ac6db15f5. 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/ES5682000031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1074977c86f65753fcead55dde194f59f4b17cc4da429e8e164ab63f72d65c2. 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/ES5682000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad74b30b442f08f201626b259956da1e6718d4d52386f27531be33eae2e7d469. 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/ES5682000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c7374e65fb54bd3dcabd1a2d603d6f03521f2fe3c13cb8e1cc086ce650208b. 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/ES5682000036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d075532cc4e2a20569658d0c58d4275e85e6a975d3fe1cc5fa2f6c408bd8197. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/ES5682000037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41f523863720a1a97e39785a908fe00596082d7cbf41989a5132c0fc3318c8f. 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/ES5682000038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939ff6825e05e3ede5c2a778af50e8cb307b8530d5815671d84c68a8ca5148dc. 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/ES5682000039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58dedb8776ea33a7464de5c0a908e39030b4d25da3c8af35b56ebcc661bd42f7. 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/ES5682000021.
Mama Do (Uh Oh, Uh Oh) - Acoustic Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1611e60645635b9bacb9f50146538de5d04d4f858d1e55101c0de1f411491e0. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/ES5682000022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd969ebfd10ff7c9e38f630d7fcde944071d43df48513436d2a316feb0d9a86e. 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/ES5682000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6f2de3dcfe63c52fe41cf1e2c3f96ed105468c10c0a53084054acb6f25c48d. 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/ES5682000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d80435888d636b8c5bb1943452dd5221cbb50bf8ac000bd2d28a68d20ed512f. 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/ES5682000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b64212d01fd75ade590061ce93ecc0eca58e20435debbb77349c68674a927e. 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/ES5682000027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc461698be116de069d3cee7688a12b4826b64c0c3ae6fc2e30f42ce30c64154c. 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/ES5682000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47eee63800caeded4b1620b9478913521604a0f93b2ed1c4e3462f708e976359. 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/ES5682000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb20eb9a0dd71066d7504a416b63d4d8af825d571bc31ecdd9ca7561c1f9d1d. 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/ES5682000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f49d354190e7bd5dbbd43b16b0af2742fe061845823c0dbc011caef21a91834. 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/ES5682000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15da81ba25895e6d893c6b6b7970316fad4a82faabf224f111dd05b1b97c4fcc. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ES5682000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b0e85b3967a773cd6dba93d2840c21a2354740237e2f8d0d2d10d078fa7d10. 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/ES5682000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8da688af760ae6015ce7c718863a433f60adcd3b3d8afaa85fa626197c4738. 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/ES5682000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975514730d0bdacfd3a23ecc843fb2f85a1658c0b1ff2d2aee2e7edc5da04339. 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/ES5682000017.