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 0x2603e13e2ffe7c21b1ce4a0f5596697e5a0d016c899e6a16b204c8d5e4a235d9. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5bde8654-85df-4f82-8aa4-276642355bbf.json and https://artists.proofprofile.net/proofs/artist/5bde8654-85df-4f82-8aa4-276642355bbf.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 0xa315846ad9312266c1bea11f7bc9942ecfb5050bdf666436666ea10ab1408ee3. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/MXF011100550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088e6b92d3a9e5ad907b38285d819f6f42b90f1b7aa2f0445850ad7f3da1c2ae. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:50:33Z), 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/MXF011200660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c34016c2737e4b8c77e6052e566eee99d0c28ebb4b981d60ae0a662a8c6dcb4. 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/MXF011400079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0abaef0d53c76384e7a4c3fa41323251da7ff832f7a5cc1a43bb2c8f04e8bf6. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:25:23Z), 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/MXF011400116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30bb71fa8ee46697f44b05abd91af1953abb840c358cc3a4097b2bec5fdb89e2. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/MXF011400109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b3f024c4863d5c8a9ddabe7cad8cf5929bbb86d044413efabc38422185b5dc. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:53:38Z), 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/MXF011400113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb2efc2f68e2a2c58ef447dbcf8cd77926ef3b98178d2455d0ccf7abcf6b2f2. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/MXF011400111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69583cb9764363f75386fe635c14068babc53af38a69c1ef65a133749d8a2f38. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/MXF011400117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef3fe2f9edbb04833441e8d7283f972c649e3b0aacba16d47a4ebac3d41dc84. 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/US7VG1531793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6afdfb5c0c74f3d64959b75c1a88f1e7f10c44213b2db8e59425d871d7f14b8c. 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/QZHZ31939416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab19d830bf2e0f1c524bac47d489539435b191352cc54d31aef5485d808af69e. 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/QZHZ41956617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09034dac676a6af15f930192681ecfee7dd1dfb647ae31bc487ca8733209d57. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/QZHZ41956618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6afdfb5c0c74f3d64959b75c1a88f1e7f10c44213b2db8e59425d871d7f14b8c. 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/QZHZ31939416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331e09f094ffd72a659c5694675f455d03d4b6376d1f4d74d157084b13907ad7. 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/QZHZ41956619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe724d9691702f4ac14173e463d2b1e95b5cafb8e404729a3a3a21e73e87de14b. 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/QZHZ41956620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d6b3bf6c9f810c27afdad3aeee34c99cb61700ed07ddad354ef1a8ab34c3a9. 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/QZHZ41956621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03fdd0bd74acecbe912dd5c8987ce3adc063bf5bbeb18fc0025479ccf2a65977. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/US7VG1666685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172a9cb8c3e9acc793e1c8f749c2b7ee7f3a772dc5a9c0195e8c7b0de582109b. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:05:37Z), 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/US7VG1775169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9672d79080c460602d94ac58e07808cb970483b9471c0c38175b43e19959372a. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZ5AB2048053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f81fec5a17e13cf8273977cdb15175e2496bcdbead89a8c375ef4448b9b2bc7. 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/QZNJX2021781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e05e0d5bb9698e2daf5f3ff2b19992c88030beb97eeb180fb66a9fd6bda6490. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/MXD782004697.