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 0xb5fb0a08a996b835566b9ca897f5d9edadb64a3b80b628168eb9576e0b8715b1. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f90fa1f5-96af-4fb9-b579-76aea297fed6.json and https://artists.proofprofile.net/proofs/artist/f90fa1f5-96af-4fb9-b579-76aea297fed6.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 0xf1d54396e9174e835f01cd434208647ce6030b8fde63f2911aabb4dbafdd78e8. 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/GBFG92400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611ad53e977962eb7163e77be4c6de1e73338d1de661f2aee59d11d32f14c315. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CA5KR2349246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9723be821062ddd2430b166d1cbbe17c4819841e387d559238c38fd3582938. 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/GB8KE2212696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e83eb7ce15bae70437cdba3ca3d4f991f622a37d484878a0343df383d7cab4. 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/GB8KE2211002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d54396e9174e835f01cd434208647ce6030b8fde63f2911aabb4dbafdd78e8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBFG92400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f564e9726dad0d5b0483600b56d42e5b11dcac4af2ab16ae13ed27b704add76. 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/GBFG91600131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817335c04896fa0be6fbbe5ca7a372c751fa088a7feeb71cffcb4075ecb2b983. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GB8KE2212405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d82b2a6108d0fe3efb0d376a3e0be904b31c3e3da7430e6272cd477edf0730. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBFG92400062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2617c5a0ba5b290af220aadb10f7be8245b8935eda1a398983bd528db9ccca73. 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/GBFG91700038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d96f28faa9bf5fee9cb44e46b9203c7d97445ab39c4b5c9381716cdc8ea759. 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/GBFG91512452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65bcc3a7fb25dc49d228be4a2579d6d94d46f7c3d102ea2c62d9e82c36249de4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBFG92100359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d766dac0379bc75bf47cb865649770ffb4f41e2fa7dd5d09796f0204b7cbcfd. 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/GBFG91512657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e5ec73cb7f082969dec18bf36afaf6c5bd6c6e0dd021680cbcee1a39eb9284. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBFG92000161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03eed730ceeb52c19ef60cc8d7596afb28482156bbf39036325da2c74d450abc. 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/GBFG92000167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040f3fcfb0b8e1e9969901e5d0360b1a980173d46b0b30efdd38739adac7a1e9. 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/GBFG91900062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56718a001471dba870a0c6d3c6e33837a0f3869776e29c73ab9d023cafb961f7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBFG92100367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e248b1a4b2adca0d23216fb7a51547289a6e1c364d8658be38a4d91c93c1934. 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/GBFG92400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b05722c007a079ec007d5526d3efcf2429f7cda8441c9ac1a758196bd39692f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBFG92400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697a6277e0ea3afa8fb5ca96d6fb63aa082f616db68a8eb9b6d3571c4df9e7fc. 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/GBFG92400059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd872ef6dcc781e2b523ec338595745ee2b8d8a490432d4b9cc74c1dab205450. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GB8KE2215598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6740ca908d035b9eab8f3e2f1d475e9a192329d2463b2af9b13be7b937a50d31. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GB8KE2304314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0281c3fd40c116c00c390004925abc5bace800dd61fc23060c5f2655f3ff84. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GB8KE2304317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067b9a86812b6ee120dd6ce5174b2118134b3a13d5ac28afbd3757b694e8bab5. 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/GB8KE2211347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d01bb7a8a35b9e9ef4d9e28941dbdc7cc806b9473f63662076e74619f31d81. 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/GB8KE2304319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc3f9b5010e1ea6b3f0a63226ffbcda216f73f9898f444f12a66e375745a70d. 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/QZTAY2379884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd4c53fdb03bd589d9203d52b264a930debd66704eacf21eba159dd0c35978d. 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/QZTAY2379887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2f870e1551ce07032c5c00106c0c4f37e519becbf231af79f36eb7235bb4f0. 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/QZTAY2379891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea25bc9438fad4de0d9f71936a8395de359ff240fed3fec92e6afc62ca84e857. 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/GB8KE2157946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877ff385c15ce8a21f6542e7a604ebcef18828598aa29f4d2ed85aa9dac375d2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZS672443849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25f241d123dc2150ee70f8a1ed8633145841e00860445ccca70c58692618ceb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZMHM2449011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5fc9f8404321c4f47a893a08b0429155dbc410ea763c6bfe59d6e3c981e6ac2. 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/QZMHN2490253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f5f65efef039a2e54e10e11ea127d6fc3a2bcdb3586ba953356f9e794bfe98. 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/QZS642402695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c1b5ef13212316b3bd90d6448cd137c87588e08ffc36e7f3811dc72e1b2f32. 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/QZMHM2432854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688e98a4728a7a53a1108b145bf481d0f2c35cdf7acd43921088b33f20b0e926. 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/GB8KE2428152.