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 0x50f92b68d663503fe9cf82f3517f755308f701f0b8b998b0b978162ea1bc23e7. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a990bcff-72d8-44ed-a6d0-0862850ac165.json and https://artists.proofprofile.net/proofs/artist/a990bcff-72d8-44ed-a6d0-0862850ac165.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 0xbb86670f5dffc064bc680aa7745bad8bf8f990b1fcfa9c767e8f87d032abab6b. 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/MYUN11300178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8d1d3b600aeadd113ae908a0cf22fcf494b95ee2f3f311c76e0e7864190f26. 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/MYUN11300179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76aa0b54f415ee144b37a9d4ad5ab397902f382d48a52403e44464ce4047d968. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/MYUN11300180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872cacb5cee50f469235c07b60862ed46ec23ccb7fc1fea56678b4bc90241c55. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/MYUN11300181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee7196b23a1e551983dc4a8922bd9350644c315a7745682580583c136b8a8ed. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/MYUN11300182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea83f4dc3bc4448aef8d7c431c352002d719b0bab47438f86dad40619d5cc0c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/MYUN11300183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66d49708040a2d35e5f1949769a239fc22cdf991815c6f50a618778e5905076. 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/MYUN11300184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c56fdc4b0e360655a188a65e28e859daa78ed8bcdba0b15b142745836e34d0d. 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/MYUN11300186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ddfb19828edb0ceb5533eac1026b7354af82fc029a55d5055e69dd28a072409. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/MYUN11300187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176f3ca37bc4bada3e979b5b417c17bb1eeac35d4b9f961b4a5452b2be317379. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/MYUN11300188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab50512521e7e533a691c17623f9b54094e579084f45a736d3df742824e5c85. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/MYUN11300189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227a6d4d96b75b58e926ca8cfd7b4630c276cffc3d8485efee2a6eeb4d290f8e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/MYUN11300190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348e879d3548091b4a9647f3e9528a5db9819b3a468935503bf731f234fec6ec. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/MYUN11300191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96209f1e9c63e861147e023187a00cff1ef07d572193845f068e75c3dc8b110. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/MYUN11300192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc423ab9f0c53407ec36eea6536f4b6f1c139c9cd7f932a767510708ffa6665d0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/MYUN11300194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775bc5b60113da4fe89d5bec7e6f83a08d24a90a671ff4aaedaa4d6fcc4f6bd5. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/MYUN11300195.