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 0xe142413f43d726af9674bc2f7cb385364a787d974e46da21c18b5bb664f21e51. 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/2a1277e4-ac24-448d-90f5-d99f5d41a4a2.json and https://artists.proofprofile.net/proofs/artist/2a1277e4-ac24-448d-90f5-d99f5d41a4a2.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 0x62e0ea4f30355b640aa372f99aebcd613e75052bc44962d0723dddc8571da04f. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:26:19Z), 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/SE5752013542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae1886ce5a9403ab5b10ef6236a7cc2c3e677fc39b4fcedcc991cd8b39ffdbf. 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/SE6I32073254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca066e9fa1ba981f818adf67fe1e519bfa5de6138199d9a356913d05dce8564. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:11:03Z), 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/SE6I32073255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a34eda8d3b60eff0a8911750feb5fb806b2bf13d8d4e1d13eab92f17a341ea. 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/SE6I32073262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3998312afab242e7f3b9a7aea70015203c0592e3d2d5e2f999a6cf32332eee7. 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/SE6SA2026363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194ee515449a3d5e3fd892d00ec2993d66f4f38efeb6bdd868f4c2d89f988126. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/SE6SA2026338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe301fa90b4299277bc9969c078777a35c12944a45caf240a1be55f3b2607838a. 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/SE6SA2026830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620242c85fc54dfb0176303ad06be8aa7010d079d550b90fb6098e2400a4c97d. 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/SE6A92192695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e09eda9e6621457dd18abd544876411a1a71098ad66ce1a7fe0041a03b6348d. 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/QZMEP2102963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5589d7be7b198633d2640ea110bf31121d2731f0187c1630a7c0c2ed9d80c7. 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/QZMEP2102966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a93881b4d94d3335edd5379e0ac4398d924b3478a1aa7c8fb9017eccdac1c3. 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/SE5BU2256781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b120573b2e035bc647a3fe63aeca4457e5f832895d1c96979ebc3e3a0d54b07. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/SE5BU2256782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3097a5c1d245ce2bb8f8f9147aec989a8174ad5eb7636112f846f25d773c799f. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/SE5BU2256783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993d8a487c0b2e5a01739f9bd0243eb9a222e4e9405438d22c260639778f34a0. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:02:01Z), 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/SE5BU2256784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ab06961b0c81333f56a682f221e321058eeb76ffcec8d46bdaad434c0052f3. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/SE5BU2256787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda959c4bd900e21cb77a05ceda1209b045951f6e2feabdd16502dbd1b6353fa4. 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/SE5BU2256790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a46a6c8b9405643232b9ec59d2f49c4532219cc10e042e957d637116f8b9380. 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/SE5BU2256791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd990b2df7d8e49f0fa9da2949fdb284d68da65f5df5198980f90d4fc65149bd. 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/SE6SA2362271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ddb8ac021f62422d638b54a90e6d862c4cf069ecd6b2f9a1e4327368a954cd. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/SE5752451098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a16433a211981dd9ee210e4f662bb750318f0dd3aad530894b12aec5a318681. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/SE5BU2536362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1abb04aa583de9ce17e18071b4a98d3c65ff22ceceee1ac9eb0b5444a377c3. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/SE5BU2536363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76cb1efd8e1664ded66dbc9ed7bf652ae489c245c11ef526d54fd294b5e9d4b0. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/SE5BU2536364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7eca96f7efdacff2d301b2701833683b6ca6c2198ff670842212f2dab9733b. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/SE5BU2536366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60874adfd5b5b07b00ca732e6cc987566d93f272cf9b1397b83664b8bb528963. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:59:49Z), 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/SE5BU2536367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1703be3a32256f5b6b7b2dc30dafbd253cdd6565948565d7be54b4ad1633e1cf. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/SE5BU2536368.