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 0xe16174c2f68c3192eb6b6fe4697e70a5d61fc9c981fd1f16cf478c83258eb288. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/16e3d8d6-2b6a-40a8-870f-de1e66ff19d3.json and https://artists.proofprofile.net/proofs/artist/16e3d8d6-2b6a-40a8-870f-de1e66ff19d3.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 0xdeb67bc165c992871fcf9d1029f1db12edece31a3b6ce75937853418db92ab8c. 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/QMDA62444111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738ca708b4090c935d25bbc4ada600b2cedd0e4bef3f2e01e98ea6cceda33f18. 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/QZ2J21505903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a72797d26340d4e44a83d203b90db7de43aa9e91ebc5239f55a3a23142a2e3. 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/TCADT1877240.
777 feat. GabrielRodriguezEMC, Madiel Lara
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8259d631c83fda133c63d5af2363b299a73b116e2ee4497c5f5ba711cb6eb3d8. 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/QZ2J21505284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05cd62d3b980280977b31a0f429f63de78a3625c621c11e3f6b4b4eb6d676e5. 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/QM4TX2459274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416359ab63230eba6090051863fa5676a2d5fd46293abbeaa120299bb708f3dc. 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/QM4TX2458914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4dcbee6de73134785c98bf0ca5749d3240b9d08006fa03e901aff387c8220b. 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/QM4TX2441895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c654a7b2db81ef563f602c434b26ea8adf8f96d930af9339698042c09be7373. 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/QM4TX2458915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686ee971a0b2644e725110179bb3b1f588be46dc9042393f845012822a8fff2a. 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/TCADT1855987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc2fcd3bbece9e27ea011058b3ff3d4a33032a526d21c7e81c848de329f7d65. 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/QMTND1101727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011b9f9a6427b57ec848562602cb396356ba30d951d9a26bfc373395465ab97c. 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/QMTND1101549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3426d3980630397be2297716ae0669336270286667ef7f98000fe13f73a5f9a1. 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/QMFME1986471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee4f1266df7ae29de292d717e959358c61c71a01aa12cda5e4cab36d683e91a. 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/QMFMF2337752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2abd3ce187421095a1c9f095aa952530e70e38ca6125e6ce2887acd4e6115425. 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/QZ2J21506226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcfe17da76cba96bd90869d90f0e4ae61c191cf86a7d09d93be03dc442cc9d7b. 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/QM6N22233919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f48658b09a58efe99915cf4f2ec9889343daadf02ce3e8971ce7e7679014a01. 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/QZS7J2148106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb363a95ce64e3cff61949a1c62bd54ee40273f7f484213a508ea1451a87e75fc. 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/QZ2J21506619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9bcae184db38212f01581245ef333d2ff3fe0b218ecaf30b4af8596bcf9184d. 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/QZSYP2111625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8457c85cc6f1bab13f9ea6de3324d04d36a3b1daa7b35d3b1309b96a1c2fabe. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/QZS7J2117559.
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