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 0xcf754963a7e1cc4ad596caa69289d44c3f3073b98d22680ebfbcddbcd616f9a1. Chain 2 (Bitcoin): anchored in block 953687 (2026-06-14T20:19:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/68d82555-c39c-4ac0-bc38-8a3490384b5a.json and https://artists.proofprofile.net/proofs/artist/68d82555-c39c-4ac0-bc38-8a3490384b5a.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 0xc6652ae782e24c8418a53fe62f31ef7fa6498b9e29edb7009f408163c2c047ae. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/USCGH2325522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9e5f8c1aee9b2743abfaeb78d90da54c6fc2db5531316ef04da946c2745ea6. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:30:22Z), 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/USCGH2349693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76da6b91161c3003f666059ed5a2b946c1be7411dfa03b907491bed0b2842f9. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/USCGH2349695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8df87f189cce0346c2b5f3445547c6e24d28e6bb59f3839b1f4644a688bd390. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USCGH2349696.
Chilenas, Charangas y Huapangos Pa' Bailar, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e62d51eaa1f1939a13dc1c79cdd2e76a26b11b6a17e352fda560654b6cc5ca. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/USCGJ2304510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac21588249112a954ec2c5a9c3d1f52233d059e24826207dd219a63e5bf33712. 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/USCGJ2304511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c72eeed9b36351d0ae367f34adabdbd1feb862f4929a13877c201d30fc3ddac. 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/USCGJ2304513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78968ffc4679bf09f67e2b30ed4a772c79a454f6c991d7f8d47cad6fed2e17e7. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:24:15Z), 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/USCGJ2304515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0fed8d47af3c5c0a48707b81143613c7da75c55622595cf094b0a850d77d9de. 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/USCGJ2304516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9acb5a222b14b45498b405c4fb098c230a4ba3f9d77abe6bee4ffde1d766f8. 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/USCGJ2304519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1fcdd24e8c364472bf6172bfa3ef823419796243280f1ff661efa70319d37f3. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USCGJ2314314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617315fde5f6de718c2a1a8860b0f1aa85eef5cd335d65b08d08a61ba15e2748. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/USCGJ2314316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cefc117f6d64ab54b4ee06b2d5788f998a24c45e964fcca244721ca624d42d3. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/USCGJ2314317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7137f167ef8711eccf10d1533c9d431549d308ff8100fb7761dbad9ad163f9e9. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USCGJ2314323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487603614b7041ec03b4659e0da0b1facfee8456dd4a40eb8afeddb98a74320a. 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/USCGJ2314324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff906d6ae28e9490e70ebdb246545a4694613043b9b66207f59a0c090acfc371. 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/USDY42388577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5848010779efa95876e1e979ac41b8b39b27a203104367a36058de3fa8e4d7. 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/USDY42388579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6516a85705ce2b1221cec598bd3ec370f65e8507376192de15c08ae356fa2939. 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/USDY42388580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e45f9bfc0a9565341186eb99cc64c27df9972be7a71dcd0c7dd13bd5031c13d. 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/USDY42388581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70dd8814dbaf8329dc5cbdd92f0e0e13a2ca00a1533cda8fca3e3d1e4679cd70. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/USDY42388582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed4bf8715284a13e8ba37fd495ae3b1326ab11cdcaaec893c2cb4eafc2e437c. 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/USX9P2446787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa37ccf35cc60cbc5f2f9546f54b39c2f71c798a85543e4cdcf1d40c9dec89572. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/USHM82541826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99b3382faba140e4e1f8473fd4d920d46bf24a5cbf80114e0cc28ed4aefa4e3. 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/USL4Q2564078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c10c2d1279e14587566e508450d42d1cc723e6330dc3a8663938342b3157fa. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USL4Q2564079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5442f09e6296aedd003490152a500fe696e08680b7fc145c2da11fb168f8176e. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USL4Q2564081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909f9a5dd05f447abbf62d32df649dc4a06722fafd4d60a74a415e55d1d98374. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/USL4Q2564083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30838475c9dd9093e586d70c9a04a5fcff551cb22a216a1d359cebe05d91f40. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USL4Q2564084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74daded387f3144f3f628763f989cb24aee75214357d950d97a5579a5ac27639. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/USL4Q2564085.