{"copyright_id":"0xfcac489fcbf15dd2d4c262fbb9c3c50f6a544f60c422b6481d9750e2db0e4c18","name":"Tamborileros de San Juan","registered_at":"2026-06-15T16:14:52Z","symbol":"NIM0762405","token_address":"0x50f0e0d969ac2de08dfa1e6007c8dffda0ef7ea6","type":"artist","uuid":"07ce7d3e-a5c3-42c1-a64f-2d65e5a9d1c8"}
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 0xfcac489fcbf15dd2d4c262fbb9c3c50f6a544f60c422b6481d9750e2db0e4c18. Chain 2 (Bitcoin): anchored in block 953877 (2026-06-16T02:39:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/07ce7d3e-a5c3-42c1-a64f-2d65e5a9d1c8.json and https://artists.proofprofile.net/proofs/artist/07ce7d3e-a5c3-42c1-a64f-2d65e5a9d1c8.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 0xfcd1cd88a08b5198d8389778f953dbe25cf3f900a3bd005421576e8aba987c87. 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/USDHM1710517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca4d80c21a132072b24c802bf2cac4d44359bb2e5069aaf28051527a54e4011. 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/USDHM1710518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1025895887cc5eccb9d0b5b96e028e0978d9884b048486abc608e43305aee2a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USDHM1710519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77c50758f8d4c67cfe5fd98fe987e7a86388dcc7ef8a400334b9e430f902ef9. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USDHM1710520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3322a703e8872f5a47110539f6b2517f21a22a85792a064aca642bb86c987ad. 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/USDHM1710521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8e63f3613a4c553229dd84fb6f4d87f170a5d5dd962413a713d9a61cc77149. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USDHM1710522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ed22a99f2295e7e5f3e4a1a711f08c463e60280bef087660ebf3e73addc771. 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/USDHM1710523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2888f00f790f6f8632e390adfe2be0ad260ab9f8b8344b6a8dc575e7b1f1ae. 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/USDHM1710524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9be05f1e77e5088b66fa98d1cd76cfa277a527c578c8d865cba87e010a408d. 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/USDHM1710525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f06531827ba47b097373c41fc9a1354859ca88a192feca38c128220d2ab3e3. 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/USDHM1710527.