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 0xf6caa0e2ebb8fd4c1ff09e520733676d5a1cdf85426646b3ada15d1ed6161bba. 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/ae97da2d-1401-4978-b703-4e3790121314.json and https://artists.proofprofile.net/proofs/artist/ae97da2d-1401-4978-b703-4e3790121314.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 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 0x066e8f76ff7d6ce3359811b37f0ffed824989d30b24844d87490d81aeeef1eb0. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USHM90998028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29b38d8d3048603ce9d4ff0b4dd876dd53f388b2e0bc3926b442d1939714955. 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/USHM90998029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c711dc83efff64539dbbba01613da71771d5e4d8b97d9c7b1cc8f05e985ddcd. 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/USHM90998031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649bd35aebd2adc83cf5b1672faca3e6646e973e94309d88d89da44235c999c6. 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/USHM90998032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa8f5b0adc5456642080adaf25bf40e30cb7f17370c838c583a9a19e89555d6. 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/USHM90998035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da8f1bfd5f000e1de65ee06850b8b36a25a6d762fb665ea2386d86030c43d1c. 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/USCGJ1069469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90020664675d69909ce8614e8f492f27e63cdc6e2ff707f4a3e705c32392e02. 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/USCGJ1069470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91f6b7a1ebc214fb67803e44b2e0187e0aa5c3b49600a559329aba931cb3ccb. 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/USCGJ1069471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x529f25ade47df43754c211bed7f13e4485d0600d94cf7f645d448a280172c35c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USCGJ1069472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9413d044d6819c5ac28378247281943e5fbf59e53240653e1a75c299b9e272. 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/USCGJ1276181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30094e2eeef421166f00fffed91cc75d551d07ab4f1086002da44de92dbea3c8. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/USCGJ1276182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0efc8ea25587d960a41dee40d5fa3a29ef8221d5c86d0865b130cbdb9002f7e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USCGJ1276186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e68daf12345bd0c3f049cec7f83dea9976d9515f13dc02d403fb5227c2ce7f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/USDY41507483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cbb00bb89e0651a26c6c1701dde0b57df992af74318511fda4fbd5c2b91cb67. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T13:27:11Z), 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/USDY41507484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87cc61fb2a526d0d4b7969b637135f4a04ee4517ad73f38f09c7cc2e0d57acd. 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/USDY41507485.
Through That Gate (feat. Molly Hartwell)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd671571429a7b249e4f75d3793c9be1694fc1b7d117f053d0fd52a86f36a2535. 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/USDY41507486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ed735ceda6d9ae07c6669f801a046c59c3c9d18e76c76717833a7209400bf6. 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/USDY41507487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddaf259adf788cc20e22a97c4a7b36b5b9638204e2d0cf23f3e793a524b45e88. 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/USDY41507488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe942251d0e9395445fb824eb173bbcbc24dfa3ebe78d73952401f4315226ff32. 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/USDY41507490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5e867d5703d7f31b3660d47ca997d76d4626d8a8fd0ec988070f8e74b7ab48. 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/USDY41507491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ca8dcd33aadde962656b85734f517b431f7ca312e471a9b26574c39879f71a. 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/QMAAK1865064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76183c2940ad5dbdd7eecd1145813a676f1e0f1469689fc19102f51c82529bc3. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/QMAAK1865065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e977d819c843adb41f9bf55397a50230ba17aa89851f2606cf65cfda8054f1d. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QMAAK1865068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4feb627110993c7b108ee8e49dbeb6f8a521da90eb182c41b80715666c2a29. Chain 2 (Bitcoin): anchored in block 957895 (2026-07-13T18:41:29Z), 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/QMAAK1865070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345c5cd27d48d9e03e7fcb2407c8113772483402980faecbc9002f1ecf417adb. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QMAAK1865072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad402fb6bacde1c23b2603b03a8d332e349a4a22a3422650fb12f1fd209b1b9e. 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/USCGJ2163299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6509c8fb55ede203b108c90176cffd26fdcc460a2ea7c4b2fa7e54523c753df3. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/USCGJ2233461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a9b953b61715df97234b06bd87bf4d62bd660bf20d4bf0392a975b88fbbef6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USCGJ2233462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2446e03201580fc1f93eb8aa34e6454d0a2adddd616053b63a817f3dda1f36e8. 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/USCGJ2233463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a6c193e883857edd8c222406c06ca7599c992dd45aa694149c4a65ef4a3441. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/USCGJ2233464.
Aqualliance Song (River Under the River)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58227c6648efb86f6cbfa13c6f29c9cef36a0557919bb04ba7d576d676682c5. 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/QZMEM2408709.