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 0x0ba7c3fda7abeab8cbece4e113165e528550f89201da54fe828194733ccf2e8a. 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/e2b4bdf5-9b32-40ea-9991-b51452024c61.json and https://artists.proofprofile.net/proofs/artist/e2b4bdf5-9b32-40ea-9991-b51452024c61.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 0xf1a624a86e4b77e28a5f2185e2573a8c4a240b2abef90684bafde1e2b185ca19. 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/CH6541876887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1368b096d99d8b71f985d66ca17518c9b73795b29239219d90fc0912d71990. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/ES5152100740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72cd02c648bf547b15b4e33e62488cdf202df6e6f2a73b6f77cd0fbd2a42fa87. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/ES30E2000150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde26e71afb0f9aeafe7208749ffb42b7c5f0d8194b86d7a8baac7be3fe550bbc. 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/ES30E2000167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb06ea4d9dc5cbc1e76531e8f3f302851de810150f55aeea1aa1e9003de58c9. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:27:49Z), 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/ES64E2485412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b362a1b287a41ffc0a88e975d22508b1206dc72d776e32901fc080431790a8f. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ES64E2483804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3adb0be79ac29f90f0af0f2b7b3fd72906a2440678883a167818ac8960cb3b64. 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/ES5152300182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb145c33522eb01fe1de516551fcef770da3fea40cb71432b789a0b39dca3d2d4. 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/QMBZ92498054.
Hasta el infinito (feat. Shakira Martínez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dfd685cbd61a73355fa2ae31edbbda9c0abebe3cabb1b32572b9960e6262fbf. 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/ES5152000919.