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 0xdea18231be0b033bbd27859d89a59344057394edcb104697e1467eaf9654386c. 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/b17f2916-dc2d-4398-bf85-f8af18b3d830.json and https://artists.proofprofile.net/proofs/artist/b17f2916-dc2d-4398-bf85-f8af18b3d830.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
International Clubbin (Instrumental Beat)
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 0x3b4a0414e889e11bf095fd4d1b578f1fa37deef37f9d6455c9ce0235d7a31e04. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-21T09:06:30Z), 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/NLPM51500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e723f00734a2b39b49b70cd15ddff082207fd2cb9bc652cc832f63c403436ac. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:48:15Z), 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/NLPM51800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ddc441ec557afd02f84e9a8d12bd95f327404d4adf2c99ca6a5373ec0149a2b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/NLPM52000044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22a4fd7ee1d645989567dc83d809e65ac76e7e0cbd8ca774a9017143a8e497a. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:50:12Z), 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/NLPM52000051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe86bc0ab33782e413db5bd899b5c7f5a7c2b72349ef0b0112f49ed593c7c29. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:46:57Z), 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/NLPM52000053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6967a8b562cc77e801b3c84d0adf24ba7910ffcf947ea42839dc251744226dc. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/NLPM52100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb68b4f6f93b4cf83f7108fbd00905577e7ecdcb3dd514ecd0d0a38f600d5914. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:49:18Z), 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/NLPM52100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cad5283c5fc9bf82dc641c70338418232666c8b2c5c08bf8802fd9847cc143d. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T14:42:40Z), 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/NLPM52100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6630756f81163706575dfcbc8651d075e9189c2d5c8274271153a425ba7114. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/NLPM52200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb2c1238af5bb69c2aa4535adb503f5da8772fb7381483a2312f42d8b09112c. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:19:28Z), 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/NLPM52200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b7140354b62f814440bd3147554ae500ad246a6f971590156e28223dc30c0a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/NLPM52200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1358eca345688c6cde57ec3ea2d1a30ed571f6a11b0539e1c6c2715bc6fc6ec. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/NLPM52300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d2f9babf90555429c5bdfb92d73bd5c6f54eae85b9e6f2c0001ee2e506d9f8. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NLPM52300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9bdc3d1339d201f9590167cc5e5c98f0b5c5485a9c3d0447af199543d202d17. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/NLPM52300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac039acfde6f617cd39a40120a074d6b94b0490fbf642c2d16a90e697e907b88. 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/NLPM52300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa84b5b486f3a1bec6ebd2ecc353d13a912d445d29a1acabec25a0bda0a8163e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/NLPM52300025.