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 0xf98d284a288c9b5e219cb56f997c079ab5f324fc32357770cc422abf733e0f7b. 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/f55cba43-c241-4393-8518-8073def69860.json and https://artists.proofprofile.net/proofs/artist/f55cba43-c241-4393-8518-8073def69860.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 0xdd1bbb07b0358b6ecd0d9b0f43bc76abeae53c6f51b055dad0c4fe2aad97bf4c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/AUXN22224077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836b2ad17db9ddf5ca79a05cb67f3947e4995da520e89015d44865ca74ced4dd. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:46:43Z), 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/AUXN22224086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f96c57d34145aba3710658b7f26eb0838ad269af28c800dd12c2d8fcc8146cf. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/RUAGT2453907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352eac049bd5d7978ce6ebebeb1634e93015f819955f880eb1ee53d5b466b3b5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/RUAGT2453908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd179ffec0a9610f0c9071ad3b62754eac357e01277dbc76586b4c2a0ae9d4665. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/RUAGT2453910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8fdb310fd12f66ddf8f6f5c7d9f4362bdbf7ee9604f115a408942914fe7a91f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/RUAGT2453911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb0e27468ba0af2327832642c08d597c9462ea3a53396111fb98958f3576cf0. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/RUAGT2453889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff808d84e7d2413290b84a290a2ca8060f9f174cbbe4b483f9cdf60f1e6b36d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/RUAGT2453893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1a49ef8922340cdb5dfd10f8b100246d822402a112285c394f4c818216a540. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:44:26Z), 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/RUAGT2453900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c54fc3b6c9dd00c75e53faed77ea9aca769d5e6818518593128eb48324f52d. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/RUAGT2453901.