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 0xe439d700648fb71a9f385381bf5677d61d22c1b3645dd3603267e7f34b30737d. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f9c900b0-c79a-46a6-a7b1-221f7f825b02.json and https://artists.proofprofile.net/proofs/artist/f9c900b0-c79a-46a6-a7b1-221f7f825b02.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 0x43d07d1a9e87edef2aa6d43899d00386a8fca057c6a9bb55190d5ad0bf79135a. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:07:16Z), 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/GBLLT1707622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7622fdb6816eb6be40ebd5ea76505ba3ea9f88afe1345adf845b3c9f023eddd. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:28:55Z), 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/GBLLT1707623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb299841f9ba1e9fa6af989fce084aa167d32025b733da08ff42cd2b151eb2e6f. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:25:46Z), 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/GBLLT1707624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed26bd5072d87e4ba5332bda86dea33525b064a68a137b2310feff6a5a63e634. 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/GBLLT1707625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbbbe30f27ad623a83cf33299a651347dd97fda16b84b3073ca110239e031e06. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:09:57Z), 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/GBLLT1707626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21477141803723c70a8c64e33f73431fc1ae3b589666471e23e7a143bc0e51c. 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/GBLLT1707627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5c2a57d95ce622e702bfc23a41e0423d1406c7c375de7a4e0e3211001d92cb. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:07:50Z), 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/GBLLT1707628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8abfa172080c8c03349e655ab549d172411c5b4e1d7c106aa9fbbb05eaff935. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:41:37Z), 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/GBLLT1707629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2015c96b2e8cd4c46a4954e6068b94a408c10d702d56e9824c07c03950faa96e. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:00:40Z), 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/GBLLT1707630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a5ed9713a3f938a3bf588fc2dee3dfa3f548d654c307e869f8e3491c8702cd. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:25:09Z), 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/GBLLT1707631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178e0c65c43733c72976d1ad50bc3bacc11552389d34a0f51514d04df7d31db2. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GBLLT1707632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa659f2898840fedf33bc34b171b9d8d615a234b82f4bc03d8fc2674d631e62f. 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/GBLLT1707633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe30b9b1e205a46a521153243f227ffbb5a18645f5abcd2ba1c3f011a776c3ed. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T16:08:23Z), 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/GBLLT1707634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x209c5c09418a75e768ebac70eaf3148aea7e94fa50dc80c6161e84d7501e0f9d. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:38:16Z), 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/GBLLT1707635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3702afb8071ae12584460c69aff370699bc58f089c2d8989a9b51fb7a9d75060. 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/GBLLT1707636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b2b3a50a919d2ef5676769fde6bc9e36d10b59ade3b7f7b6c43fa600a366b0. 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/GBLLT1707637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77a0037ae7cc2c5f0f74a4e90dfab2225802f5b49b5dd84f19e0bd633772163. 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/GBLLT1707638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592ec0c023742bb97c60d97a04320d4eed3bc63ce68c4a3cc2a7a46745e23e43. 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/GBLLT1707639.