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 0x02c486b052cfcf15524018977af7d6a7f7ee22356e70dfb47f6e330925d4e99e. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/053471de-80e1-4496-9519-2ed59615339c.json and https://artists.proofprofile.net/proofs/artist/053471de-80e1-4496-9519-2ed59615339c.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 0xb45432d664bfa981d9611485fba926301db724f61733d6753a1377392ae66b18. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/GBMA22348537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce0a082b30ca017f4517caa7cb2ad333ec9ea22af36be3ec57bd6925b13d3e9. 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/GBMA22348538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef55817eb2b8c27a9cd6e2f484c608181e07140f52aaa1fec5f696d4116b7763. 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/GBMA22348539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291c977088be38bec9d51e339e8834c78f6cfb90865266818e3aed6e8233b199. 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/GBMA22348540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f95ce7be539a21161d78e30807d15691bb2fff99320dc2567b1a9299586662d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBMA22348541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fbe4cff64dd3c7d46a6b17bf9e6b50b4426970563fd26b9784bcb10cb850491. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GBMA22348542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db8d3fef76088fd08f58cfa8a0e194943bfe8c8abad5790e7c3508acc65ce9d. 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/GBMA22348543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cfca01105be66b83a53135a1bbee93b8e6d521c8651dd926db6f7f544c084e1. 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/GBLFP2408475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01daab01ac30f93e150fdcf3ee1d1e303c21816ee0597eb5415d7fbe252f4a02. 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/GBLFP2408476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6cb24a8977b381123dbf5ad4e2beba7edf7911bc7a6495c854b4ef06e2b8e7. 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/GBLFP2408477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d6b9c52a64162601902f26929633fd5cddb4efe9ee121de15491d00292fd5d. 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/GBLFP2408478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3b0667bc00e460918bb019bbb585e1575c51dae6f8680a2712ef49c0d6fa17. 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/GBLFP2408479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4916f9241f6f2b97e0e1d2b928fef91fa22a142881cb0d7ed28f697ba5cc9c5. 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/GBLFP2408480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09fca268e43cb6c25a530ae6d2672b1be1e7981dc15b719610e80e40772f7b2a. 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/GBLFP2408481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8955677009ea4c4f9edaff1e0d01ddf5935f2cb515b7453f36cd99e77d3faadb. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/GBLFP2408482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46eaa81571b0f24c0fad6d1f3a9399bac5d93a29a573c280f0e52ab4a4cd81c6. 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/GBLFP2432412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02bb2029d223809baa46b9d2d551dc4f704baba84d8a658d27cb47749d493eb0. 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/GBLFP2432413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9384a72908b75a057c942d6decae408364e3c9575c916172cb5d97bc3051e9ad. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/GBLFP2432414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27008295a3839f752bc77feff9d098db196779a80cd666ee01a01f9226ea406. 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/GBLFP2432415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8365e47c81d7a2c4cf0cefbd49dedc3e99c8806dec5de6aa0cee38c1b6822a. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/GBLFP2432416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaebafd3494f500f8d0eba973bfbd02952a2e7d9c9ee6f7bb2b63966f5eeea00a. 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/GBLFP2432417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36fc39de34dc3cd38384fe74f4cc457c96c9c21bc1ff85c1bba5a9eea63b1177. 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/GBLFP2432418.