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 0x459220473810624f73087774620dc4c39de61118a2aa8947c2c5ddd06c5defeb. 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/404bb1b7-0afd-4d8b-8e6d-79afe2f84487.json and https://artists.proofprofile.net/proofs/artist/404bb1b7-0afd-4d8b-8e6d-79afe2f84487.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 0xe6c897b18f91078a58d8e42ff66e9dfbbd6cd119842baf8317f761f6b6864696. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/RUA1D2344721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0bd352c9a1cadcceaadb7b6b4a305cdfe58641a92e606564251212c0a1b341. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:45:29Z), 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/RUA1D2347471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf02f57618ce334985d9ff3c5a24613b8322fa0a017475fbcb590b46ec331e3b. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:57:03Z), 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/RUAGT2308163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfbe8f8ce34dc92e98dfdb04a050600f876ea5e40510dd4e5852602dffabe65d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/RUAGT2308166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba43a6e33c28f3e56883a9645959dfaa8f4a38c9935db57875c303b22fe15965. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/RUAGT2308167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa613f0c6740c04cab65c23eb540fb245548a3562af97e2da28c9cf24f602e5e9. 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/RUA1D2500420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da1a207dc8c737ffdf472e0f0bc9dc286ddb95d93bbee2ff4fc25ff0a685544. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/RUA1D2536168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc379aec3d4af750dc4b02025520cefb1e90b6bdbf6351b278604cadf209ae2. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/RUA1D2536169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb684f9ef3343aa7a47ac3540a4575247ff4ab40b6ce067b83ff3e2e9fc87c6. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/RUA1D2536170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d92b98f3fdbe6b1ae11ad255c2975277d9180c084b61853368caae4cf7efce1. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/RUA1D2536171.