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 0x5a4c98663daf42eb0dec71a7285edee301f2a7b4741228047e7ed0e24268e3ad. 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/2bbadd50-8ae5-45cf-90d6-32ef7e9a294e.json and https://artists.proofprofile.net/proofs/artist/2bbadd50-8ae5-45cf-90d6-32ef7e9a294e.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 0x90c6aa885907afdcb84603f6748f1d9e50f105ca9af04258fc47d8de2b502883. 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/GBLLT2231826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e12944b3ab38713d9478afe39179b00a246b998e9c07faa1e2cc0c500cc8aa7. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/GBLLT2231831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee8f26388865024c4e8b4e0818acbabad971a82734dec63a0d4b71fb00b39f6. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/GBLLT2231833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15cf56678a85c002129fc5552f0dd893636f99ba37e1e2ee5291567258be4b68. 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/GBLLT2231834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989d77b21b7606b8468d2bca2a69330597b262115fe33b2d654e692f0bf20e78. 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/GBLLT2231952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad1950005f73f1d3266bdd6ac21737472e4e92edebcb24447c7ba8256c9af55. 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/GBLLT2231956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6934e1e183a8e8262bcd3372a8a322cb47729490aec2aea7389e0de9070c45. 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/GBLLT2231957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1dbcc6ae172346e90def6c07a266322d7366367f192181bcc150bccc4698cc. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:12:01Z), 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/GBLLT2231965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ea6aad4403cf4c6e98440a254cdac59b3662f1f192e93e16a5e1f4696dc6ec. 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/GX8KD2222582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5b884d35cf02b5931f1422073943357ccaf1d509fa3903a1b7b767d65a6522. 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/GX8KD2222588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2296e35a83d487fbd84172434e92545799f83ed8181dbec45d6c579a2b169c. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/GX8KD2222603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b58276374ceff834f452d680864ca0d079f063e4d09cbb16b3bb0d627c90ba5. 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/GX8KD2222578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe317ade08a9100be2006655a656c44d1b47bd82274eb8c33aee02ee935635e. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GX8KD2222440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee19598fb0706c1508e32497c6dd02292bb7eea666deca747501ac3f49be6f4. 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/GX8KD2222608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63da4618f7839d0433a050e6ea12cf957a1466180a39d3dc1153868fde3bf95. 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/GX8KD2222499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2530dd68180b870d738d7be556c711f622ac3e762dc122944e66274b89715e4e. 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/GX8KD2222529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186b991fc2b73ac8d06dbd188679abcbd172de80d032a5f13c1763213c1538f9. 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/GX8KD2237191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699d1c4e3c0a6fbc66bf55d94b80984d80f480ce091921921f83148e496b2d8f. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/GX8KD2237194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d99f4fada02b90240cb1dd41f55614e7365a811d38456086a364a709461e15. 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/GX8KD2237197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205d1ae4978b903fff431811965e5010daeed3abcf4548013ab4f6fa5e075feb. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/GX8KD2237201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ede036f6a1b9fff2f2165404847be3bff0c371c7494076332ed235ab0408c5a. 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/GX8KD2237204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3024569119eb84ff9c6615fe545be921a1bd794c4f7a2913c605bd79c4dfe044. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/GX8KD2237207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00bdf17974ce09d89602353d76d501bc5d23ceea106c46b4551e6722f440788. 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/GX8KD2237117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d086356ee2b2da0abf7017282044b012269155ad4d899986c5126d43cd423ad. 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/GX8KD2237209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13856b3e35ba95edeb4853ef73a26aaa831fc7aa337fdda8d11862cc57c4faaf. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/GX8KD2237213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3fd4feeff30a8f534d41b59c36d16e1b360f3e1352f53a3376647e6d1cc1f0. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GX8KD2237215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ef6df2659fd2d5887e7f40c6506494bf5a526e5639908c65eda10c5f6b5a1c. 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/GX8KD2237173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024b2477f9a0a9c57d8b077fd1cc3423245cce44839adfe7d34e677370f4469f. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:46:45Z), 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/GX8KD2237169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c516ad1eb1b62aab740502d8f9822b33cad15125bd9393bd0e1205d5e60de7. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:03:36Z), 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/GX8KD2237281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdef3b13da321e7eb1db7da995b19c2b43a1906e40bb11065c43540aa60b2151. 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/GX8KD2237245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6fbc97f8627138ec4571716bf8cb0825a806167981bcb6b0fb27942559e72d. 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/GX8KD2254846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9295b78a423ec98e6a39dea4a92cada46237b389a7dffd3c3aecb3923db70efb. 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/GX8KD2254850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf255decfd195535f262c154670d5d3d10b042b62f79388b368e678b7998945ef. 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/GX8KD2254852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca218dcfe1589a5bbcf39c4413fcd9f5d2616760e4d7f6829fb3e6bc20e05d0. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GX8KD2254853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13736b3672e264d34d2a588be6346ebe65f088d91aa2fb72995cb763f7fec957. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:06:51Z), 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/GX8KD2254854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72c7bf9ee2efa5f94a618d72334e785a8bbf4951c498bacdef1f5b31b49ffe2. 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/GX8KD2254855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630eb707704ddf2eb58ad248a5112475453a6a56d101d68edb9ffbd3b6b883f7. 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/GX8KD2254833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39930716975b95cd30cbf545ff00a31a2da6b45cb160c75c42a864dc84e780af. 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/GX8KD2254834.