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 0x8fe1bcb951bb56203d2035ee6072cfd87244c58e20117eb24457e026f8e8d560. 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/6832d182-d31e-4f7b-be15-ebda84b2fadf.json and https://artists.proofprofile.net/proofs/artist/6832d182-d31e-4f7b-be15-ebda84b2fadf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Seven Cities (DIM3NSION & DJ Nano Remix)
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 0x7392c714069bf419556bcf4d81b67ef1fae63ee11a205cd52b9e2844c284f555. 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/GX3Q92326911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa973ff0e6b11ffe02aeacfd38a4aa04e03c68d3231a4b61ff6b8c7eb9da5ee34. 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/ESUM72302412.
Himno (para los que están jodidos) [DJ Nano Remix]
Himno (para los que están jodidos) - DJ Nano Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55afb0cf679bd38429f8c63cf36bf0adca8c756ea9468512d6ad7809cc23b6a0. 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/ES6062300401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df7331f91a039e1f20e8b9776bb4f9b03a90f51995ec2919625bc61ee6b1097. 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/ES94G2100601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc32dfa928c4aaf07fafeced7fe4994b9939652479ab7f1500fd4b033d1768b. 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/ES17D2402432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2f184e29247cd3696d70472276eaa4b1e50b9aed49576cd394f04bafc8acd5. 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/FRX452088490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054d710a756d2a6473708790c0f9477c878136228406dd0856660d814597ac5b. 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/ES5152000614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3179b2d4e9bd385b21e733c12dbdbac267570011550b787d50c9fcc40fcb13. 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/ES5151801823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb682e4619665ae7f8731b1fbd42da7913b6c4cfb5fe74bdfc40c93ae163dfc3. 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/ES61A1714341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06671c4a00c2cea40f82c72215b85216389911d3498e70392a45bdffa3e09d31. 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/ES5152400591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c2a6e07e1cd3f2b92f9fe31866ce62842fcd0f72061be30cf4d1b767887e5e. 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/ES71G2412387.
Ni Más Ni Menos (DJ Nano Remix / 50 Aniversario)
Ni Más Ni Menos - DJ Nano Remix / 50 Aniversario
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b18dc6dd516d1b0d1239327ff054fa22a23aa899711e125fb897396375480c0. 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/ESUM72400143.
Cualquier Otra Parte - Cualquier Otra Parte DJ Nano Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0eb16d08ed511ef4fb46e2a38cdd504bf4833830b0232b1d8452aff4b13a7dc. 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/GBPVV2300129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05fa721f819c8c9287464882a98a2b2017c49da9a0d622fa71a72a898b6224b0. 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/ES5152300048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe919b304a7325973155d4bfe03c9c9618a0dfed20bdb2c3fb7f5497b1558df63. 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/ES60D2100119.
El tridente (feat. Costa) [Karetus Edit]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef232edde0a9b84297c625c50ea232a5dec4dd52f91ab6d71e18e1124d8146c. 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/ES5152000376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c5f8fee85df5959866c8f7316b907ad7b1b6bb84cb7482800ed296d5f33fcd. 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/ES09S2000144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb8a931f6fa3ddc7838dbb94f8281f1286ce04e4620d7d36b13f8d13bf8536e. 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/FR96X1931703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915db3546f68a93b587596840f03914e6b9b20cc0fa16f280e740836ea9d2761. 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/ES71G1924788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473c32c02b3c2b1c48d692ce73174a08103f469d8e7ec1808d90aa905872b9c5. 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/NLQ881900042.
Irremediable (feat. Siloé) [DJ Nano Remix]
Irremediable (feat. Siloé) - DJ Nano Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03be5645af244451a0e2d100de6881e380561b625ad2d12095623483f32b2f08. 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/ES5152500566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6721d47c2924397cf1b9c9eefe0f4ed578bfe5e06da2c783ffa7bf68011675. 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/DEH742514716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe591c89635e6d1f0de0e980dc2cd3dc254773395a7c587c7d181d7a3ca72143f. 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/ES6062531001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd123057da19cf322317a7e05f51c694b56c7f5cdfedd253bd5bcc51790ec1d46. 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/DEH742510970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefde03aa79cb5ec8f7129ef88f9c464e121f0dfa2d419bb6dd35520c6b0c592e. 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/DEH742510971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b0435b6b27d45a76d940d226fe19ed9b41449b58f6f027201562bf1f1f5507. 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/UKU932500761.
Millenium - Pastis & Buenri, Ruboy Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e7a88dedb0c919739b763e6f0223db5a0a19414a104292d4bd30a0d23b3159. 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/UKU932500762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00a6f578e6d40388e6f7ffa13d3f89d3256145bcb3a02b58a9084a10b9f6687. 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/GXF9Q2439698.
El Último Día de Nuestras Vidas (DJ Nano Remix)
El Último Día de Nuestras Vidas - DJ Nano Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791b587fe80fabf31f5423d15d850673fc440921a1ad9296796d7c54c9acdb1b. 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/ES5022402035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19cdada60d77391e8509c547d3439e6c8c78682fccbf02757aeace1e9592e283. 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/ES7002162501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3dddf298c1a4976e7faa287f701a9340555056f84981d01f779450eb5e82263. 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/DEMA61907786.