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 0x1e89455d8bf665d8c5d2161fd919bc1cd0617644a6e70c2b285796eb2838fe0d. 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/8bf98f00-4ce6-4e44-b164-4c295f506dc3.json and https://artists.proofprofile.net/proofs/artist/8bf98f00-4ce6-4e44-b164-4c295f506dc3.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 0xef18e653b37d9d61dee64f4fa1168f591eb431ba33d09888a567152b3bcee847. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CAENV2336202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea301f3447fefe8a1cd7a1847be878575cc2043728a3613931c5e6e63c3e1b29. 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/QZS632112624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bee5038e263fc26da915d84fe0607f8a47aa71e2fe2564d82a84ac91e7d0d97. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZP7F2121429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f536c55015ded7e1129744e8cf36fe0fb461c7e6e19a2b0160e9a1446a7ea77. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/CAGOO2337250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87706d3e2b8a3ea971442f247129e82104493eaed690c253ba3591cf4d69a409. 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/CA5KR2396313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0269a121357b8ee6b3de49a1ec4cc3ffcd6370d2cb3deee7fe5e1f095de7a0a2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CA5KR2374421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349dfd7f3bcc10073a6544fefad2a19c4682fb10cba98c6d80c5c88eec54cd27. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CACWV2352517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf398ed4a7719e30d1a516956e97e123ea79f96e967d9db9881a31717b2f16744. 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/GB2LD2210439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c602c0074db4eae100074ca3f3e67e1b1a377fe68e29eca6e1a9faf652efc4d. 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/GX8LD2261475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc34a9717bfd316ec83c7f33cb055e94d56bcf5e724a3131532d465deb25587. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/CAHQJ2200214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e20eb98c61dba99cf4be3b2135b6d0caf4d73bbcc8f218580925f3a476847d. 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/QZS652137328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e826f585029b75afb953a51ce50e9fcacf3655fd91f893e17df169f2b035633. 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/USA2P2101879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485eb831a0dfc25ab3d664e886c66248fc085ae7239a5ba751731a82760e8bcc. 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/USA2P2039800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc007bf92ccae418eccdc2791a236c625255d5b26571b39133b3bdaf7beda3f7. 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/GBSMU9126683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631e36bc5d4a038ef5b50e996e80a0c5c1b4785fcd50117ed31085d934a750fa. 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/CALVP2025588.