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 0x08fe955135649cce313b7a50f00ca07138c1e2f5ebe8fee1f176eea3493b4eba. 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/086a7822-99e0-43ab-b6ca-fb6ca1c591c1.json and https://artists.proofprofile.net/proofs/artist/086a7822-99e0-43ab-b6ca-fb6ca1c591c1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
La, La, La / El Ultimo Tren A Clarksville / El Turista 1.999.999 / Molino Al Viento (Los Ep's Originales)
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 0x84055c56446cd40fdabea705a7a22f796238d4ff44b0624e25f5ea06637a9b57. 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/ES5378900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aac32f8a8e6b963b2d41b4fbfbf682c6a3de5cf488c0e503ad4bc31003ec67e. 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/ES7580501201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc5ccc290dd9d20d102f5bc3511e3dfeb5836738883c76a391eacd76111afbf. 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/ES7580501202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ce0aeb6178b24141d15b9f89d00638ece9556ecd71cc238da8285c92f0541c. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/ES7580501203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53712aedfb11a53dbe0bcead5f1ff3cfba3d24bb3b01b1339f2ad1f74f75a57. 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/ES7580501204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e7862d0a740155dee6fcee4c40cb9ef8f5be11fb08fa284ffd915f5614cabd. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ES7580501205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fbc00324e9384478a69bd2f507b2d18833ff013b899c12c0def343edafe9923. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/ES7580501206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9524e0ef87db5960e66eb9fa858e86074532e4fd5481e47b3c56eadb0fbbc045. 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/ES7580501207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84deda52761b71f4651bb722da5bd449272b1559e30ff7cddddf4d627b7f2ab2. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/ES7580501208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4ab8749c058f6cb7dcb64c66f11278c1bff8606a4edc5108d5791916e12f06. 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/ES7580501209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256953f5944da4659267b65016ef0408c3089e6ade31a0a956646be8634686c9. 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/ES7580501210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d81a29f5930b2658b6405da73fb09c2cfc8933157890dbfdf8947f5f17896b9. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/ES7580501212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81958b6a8d9065a171104a19d4f623a28ff19a55951db9119ca12e9a037b552. 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/ES7580501213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94af74ff4f2f7cf71f11eac70dec367e8ba9da04041a1a8cb87458fab101f9c7. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/ES7580501214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53712aedfb11a53dbe0bcead5f1ff3cfba3d24bb3b01b1339f2ad1f74f75a57. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ES7580501204.
40 Años de No. 1 en Español : Los 50's, 60's, 70's y 80's
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53712aedfb11a53dbe0bcead5f1ff3cfba3d24bb3b01b1339f2ad1f74f75a57. 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/ES7580501204.
40 Años de No. 1 en Español: Los 50's, los 60's, los 70's y los 80's, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc5ccc290dd9d20d102f5bc3511e3dfeb5836738883c76a391eacd76111afbf. 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/ES7580501202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc5ccc290dd9d20d102f5bc3511e3dfeb5836738883c76a391eacd76111afbf. 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/ES7580501202.