{"copyright_id":"0x58768158acd4ab4b29a7603708edee5ced1027a7aecfeadb1aa7d55db6e2af62","name":"Joseito Romero y su Grupo","registered_at":"2026-06-17T13:03:00Z","symbol":"NIM1403737","token_address":"0x9eb65b986dbb58311cc0bfb7eeb5d72b799149ce","type":"artist","uuid":"87fbcbdb-2f8e-43fc-b1cc-3df15024e5e8"}
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 0x58768158acd4ab4b29a7603708edee5ced1027a7aecfeadb1aa7d55db6e2af62. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/87fbcbdb-2f8e-43fc-b1cc-3df15024e5e8.json and https://artists.proofprofile.net/proofs/artist/87fbcbdb-2f8e-43fc-b1cc-3df15024e5e8.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 0x1d0f81869a560c6e8c57c68781b855c3bea1161a5050939029a9bb9aca251663. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QM6N21801748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f15c9f58722869c6f3c09d6080088193715bc7491d53e263e9b9d57a95d46b7. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QM6N21801749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81bb3dd0d1dbba9e5de23ed428cf0ed4371e9f2187f3c637fb655dbbb2c07ac. 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/QM6N21801751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191c56b133614ddbb98d3fa84835560e88cfe3badb7567c259f2a00b8f9e9834. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QM6N21801753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc477e64aae0c3e0c0d265b2b7e2d8a770835fa48f242881e2183b323d870886. 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/QM6N21801755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b69930f485807353333fa8176e2b5bb6246c9ce119ce2c410840096b0b5925. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM6N21801758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50cea325b4e25b042e478dc7599b1ffefbc3eba42aad6c8d1329f7606ff91d0. 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/QM6N21801760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b05507b83214200ca3616dd0f51622ebfef1e86f3a2b9ae54ac5234ac3523f2. 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/QM6N21801762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6aaa9abf22903adc482be9fadcba5a0bbcf4bbc327c1fb694550814e6de3c1f. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QM6N21801747.
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 0xb39de0aaebf3e385e66f1ce7d50556915261cdb7a587aa84a8616a63460b2c15. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QM6N21801750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9836ddee9f0673291e01ab0fd53b3e9fdcdf23a875df3a7d3823451715e63f3. 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/QM6N21801752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a62048a686174c3f3ffd4b8a876b9196c67c7ebce908fe9c75d7f909142f311. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/QM6N21801756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1a0ac6dfcb8a100e52786d2b4580615cc0fb4fe908c820fd04050ea0255a0f. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QM6N21801757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5066d0e94278f82085d0fe4cb9d5714653d7d1d7c8b3f7a4a515744074cad51d. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/QM6N21801759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf33147f8beab8dfca45d681e7a496b41ac37bf57cc8707c9ca69ba6a5ad80cc. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/QM6N21801761.