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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e53e8ccfefd73fbe3fe71d95fe2a5ce9ad78550a8da1329da8bc33e7fcee14. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2c45cfa0-ff4e-491c-b59a-4dbc1107d7c6.json and https://artists.proofprofile.net/proofs/artist/2c45cfa0-ff4e-491c-b59a-4dbc1107d7c6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Where Angels Learn to Fly (Remastered 2023)
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775b23e2ce7a66243a29f79d87bd4ca5a348b44252e0dea9aeb56941454c80a3. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAHA2307692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143a3d9a84f19a74070652a376cd15dbb52d2b3b6dd9daccc47ed7ed2d8e703c. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/TCAHA2307725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68362c8bb5f95d702c1bf535808fb672fd0cfd3c1ef663c0beff9f27549ade5e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAHA2307720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94f3f870d2f5f8806e56eb91526e9c86417bd6c01d5109d7334d49128d1ab12. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAHA2307703.
The Violence Between Us (Remastered 2023)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f14c3165524709850acb7d07795a54087e32e4bced6babafffa4ea8beffb429. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/TCAHA2307739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb83f5baea187d4af2dd2cceb4b7284337e5058bbc7df537e159fde7397bea6. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/TCAHA2307565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9a9f1cf282605cca8d945cbf2fef625fdf09f8c9fdaf33f7d9a67a11bdf789. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCAHA2307661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146912ab6792e30b5c6366adc0dbb9e95b695a95c840a92be5c32ab1b3e2d6be. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAHA2307684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b92c0fdc338e1a4bd83f8913bcc262da72453260ab7a9f3b8d3e12eb8970ffe. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAHA2307709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192334012f855f19a4178fb72d7f65acb5f46f37aec84e951b70a419a274ee44. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/TCAHA2307716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6613bf03787991dd661092e6461feb7e50c1d683d6569fb4ca36b4a00cd76229. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/TCAIW2442751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe052795d1017b467e4c7483fea0af780e844e29d535812766a272d8210d0f247. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAIW2442755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe60c59ca881f4c613c3bc45e1a7a565bbd7f6778c88e1aecf145e3b4e0fd31. 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/TCAIW2442760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9788e7a719a50a546447daff35853fe46ee912cd925c5af597c6a3298151809a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAIW2442762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448a1b319190db8bd82fd22e9a9d77510918544b72a77dc04ac81f9a59d0a7e2. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/TCAIW2442766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203196d75c9a87c48b7f632a44e3dacbbe3934e33cfbd8c01b1e4cd5ddad69e3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAIW2442781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fcaa7fdf936814c565cd8e80001ffacc7c75991da56b74ad7d5bad0f31f9951. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAIW2442787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ba9111713b825a7fc47cc0d5366640b38bdc38a51fa0bc16df3f181d83f0d8. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/TCAIW2442789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4efcb02feb5e3a395b9277a47a7d7c273b45e69337dd4a5fa30f83255826e3a1. 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/TCAJC2403581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17244079b7a8e432c363795dbf127663c050f4aaad0f2cb99e4c62141fa4f471. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/TCAJG2574560.