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 0x68b28c80b759cb0f858c8d78a0d92d9ab12a9dd3000e321e670fcf3769125acf. 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/87543759-e6a3-42f4-a8f1-3c9f2825f604.json and https://artists.proofprofile.net/proofs/artist/87543759-e6a3-42f4-a8f1-3c9f2825f604.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 0x2fdf7e34646cd3d12bfce0a23867dde4d0e1011c64c2ba236872dfa6b8467abc. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:40:24Z), 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/USMH92375023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760ecd6ad78329856230b0f8d0430aaf46113a203aeb762cae8d38c93ff9c18b. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:06:13Z), 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/USMH92375025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2394405141d4c1f5736eaaef0a164134620e83a04f1ec097fafbc5cf607a0a55. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:23:23Z), 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/USMH92375027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c9bc520689730f9ae52665638f71fe5987809ea6fcebae444029b1e0472f7e. 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/USMH92375028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x563daf129f9c6bac08443768a7ff71f57658b8f441cc587ac802e7fe8cd59fb4. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:26:22Z), 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/FR6V80315738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f08cc200e908aa3204fc9ee4d366957d5869dbce8c3477595a68c0c46eac24f. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/FR6V80315739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb714f8b15ff3a2796165b30179cef53b3f260807903bdb454e86d165e0b313ce. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/FR6V80315742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65379bad6b1d43c2f79f042255fa4323ce5dedd401c442530f9ec090ecddafd. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/FR6V80315744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095639fb2166e841b6979dc43540beb0d8a55ab122135368eed2753ff3c431a2. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/FR6V80315745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa16adc6e9dfa2ea4807ecf4ec7fa727c7b4618867dc05b11f3f8c47200110c. 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/USHM92277596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83935c3809706aa4831a99db249fdf7825e0949ed63a991ed5baa84c4880b9b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USHM92266697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df661d954aa92082e29796242d0fd91c241d94c1c7ba243d4991a79197fa176. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USHM92266699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb144a760df62a79c234ab6274be5f446bd67ee977525c810ed4ff301e621f9. 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/USHM92266700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c72c0c0e5bf4621feabc6d0a00bb92552f94210971b3b612fa0955a83e0a8a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USHM92266701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128ffb2c70eda7974c905b728643a65e7705cad3c5ab6cc8380f07bba2950793. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:38:17Z), 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/USHM82273591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4c6542e3afec8d1ead46d6441168b29739d3c532e38f1279bdb308eb74404d. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T16:09:35Z), 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/USHM92261078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae855da3936d31ecf66945782d2e9ba3bceeae3c9e2736bfc7f0cfbebe370472. 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/USL4Q2320489.