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 0xcc0a7315352fba5b59a6dcbc932a8258fec7b5d60293f2fcfc59dd09cc23a06c. 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/3e8f3643-8248-4824-8014-4080748a8b4b.json and https://artists.proofprofile.net/proofs/artist/3e8f3643-8248-4824-8014-4080748a8b4b.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 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 0xc5c51cee844cd1675bf869bfff4e569f4e40a51d2409bfd3fb819509a5113e62. 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/MXF012200155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec29f77a66ede7808ed43c56f24842a6da8d44ec313099eadb53bc521414391. 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/MXF012300844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd46e628569ca59cc4975d84b8d5a7eeecc7f6398f8f44d735eb50abc95f232. 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/USA2P2339865.
Bélico y Cholo - Con Virlan Garcia - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ce33a6b79e348a5fa5840018de940914007620f02f5f756ed7c3e764268710. 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/QM4TX2364598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f794f9efe7a07a82a1c89f9c4c982fd3edf2ced4810ed3464711ef7ab8d2a6. 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/MXF012300842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82cae64d394a112b597a9eb21962cfaaeeca172b48ded2166a3744db9da64b38. 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/MXF012300782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2226edbde34ab7dc85536ea2da6207879b6530a478f14a5d0743b912ed0ddca0. 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/QMEU32219786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8275119e4d2b52d7f428cdccb74c591a70f473f1878f5457de952760e20d8de8. 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/MXF012300305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0346e262a514dc1bf7405583032e92ebe0ee8bebee0b14bef3e506ab88be261. 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/MXF012100317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3552b030afa85cf97ad5543046a6f0defe584a2ca799783eebd91fb58110f4a7. 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/MXF012300409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aaf926990889dd9f8d4bf4934db9b0910123da9808aeb08b809a2bffee89035. 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/MXF012200131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3236ed9ddde4fe9e9cc97f317ddf1ef38f0f9fa0d4382e260bc7933da0bee30. 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/FRX452083074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc80a3b3d69dc262c3d6d115010522371feef5a387979e0c80ffd8cd768b4cd3. 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/QZTV32220519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211a4381d77a25626e6c9f687733f3bde651025cdc93aff4b7a4e3eaff9bb705. 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/MXF012301204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f794f9efe7a07a82a1c89f9c4c982fd3edf2ced4810ed3464711ef7ab8d2a6. 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/MXF012300842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd148dfacd5e9a61441c3b37e9f9c92153a15cfa02f49982341f529c586018be. 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/MXF012301205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8233d54d5fe36054886133a81e83050de27ae6bf2806d4c85ac6eda96d03ffd. 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/MXF012301206.