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 0x3b48bd08501a55c40f86b1037f0621e84f795b619336191bfc4aac0c7900930a. 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/fd296d17-faa8-4726-9ab5-d0d94b29a369.json and https://artists.proofprofile.net/proofs/artist/fd296d17-faa8-4726-9ab5-d0d94b29a369.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 0x6e25f700b2634e43284c09e3d28f19b4480b5244828333d601177d8ac66f4620. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/QZNMX2154168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae52d0c26139df66342476e2847194b019e4c314b52e07c187c521c9d0e738a. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZNMV2227141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe5bbf46e97ce050fe4b1ec09580be47a7b8bd2f6ae9633675d8c6e39ba64dc. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:06:14Z), 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/QZNMW2281806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb0f8a34fe3479f54e1427eebf7890be3b84f7cedcafa302ca9e63f51b84045. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAHL2304746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a764605225295c38de86858b2a744492247165f97889a5acbfbb9a87a536434. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:17:44Z), 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/TCAHP2352782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12ac75848e2d92ff3421530a7bbc4a12a354d9ea022a326bb365221c6468e49. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCAHP2352854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1ea011f59ef37d63456814d63427626b7271ad2338d7f12beab551e6124f72. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/TCAHP2352921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3ecdd7803ac220e2edbc6498f6f45327387c36cb3ed9129cd89d9e82f169a7. 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/TCAHP2352996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91846180586d3600b37ebf8d07234c1b819cd21e2a40daf78c815137d04dcdd. 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/TCAHT2476039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe09fe1950ec79cfb4d2b3c9b2ccf37bc60839cbeb0b868d70f2d9055fee8729. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:59:14Z), 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/TCAHX2459216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f00b4667163a58d7f613a48b113cdd9eebb5a4aae6e679f6f1e5a73b808a8b0. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:54:46Z), 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/TCAIP2407586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ffed1f1bef059d28ff93e88a1ba9de93d23cd1ce8a47948903afcc3532e4f9. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAJB2423116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd753bf58b386daf8a0d3402585c102e72770bcbb5853699ce6a10bcf73d8753b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAJC2492487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1d8e806825112a1c50eb462c053615b37b4ea80886755817708e2abf0b9561. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAJH2500711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8b0a9224f8dba0dcaf8ebf44d76b485a313bbf42a05eab6b24629ead3dac4a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAJI2500736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aecd410fadf67836e324e292edc34f4e2a3106c2f9e49fb748926359d8bb8f5. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:13:45Z), 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/TCAJH2500756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2abf6e4a50e1529554c706079b655f42e5d91f35df93a470e10e62b820eb2e72. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAJH2500766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada502d30eb16f1f18a7457922507c7048a911f07e7609b455a9b073d8fbc57c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAJH2500842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0668e10e6718dda5adb308b637222d9819e8203360068bf3053e0a89e092adf1. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:48:37Z), 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/TCAJH2500880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4752165dcd4776b8939252bd09eb436de3c00060a14caa12eab01bf40a45f099. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/TCAJX2540675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d41c2684b0870e930b9d223d8a4146d171fbf703f38d086dce3f901c2cc2a6. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QT65X2567972.