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 0xcd610e5a57c3966c17543bd32f84ae76e2f6647d50c6e7434f81b3253207167c. 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/86ba8563-7f3f-425d-9265-a3311abd709c.json and https://artists.proofprofile.net/proofs/artist/86ba8563-7f3f-425d-9265-a3311abd709c.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 0x4ac03587b4f90279310417c5c103fb800d802e7003b1286e0e00e078c1a167f9. 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/USCGJ1246461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28cbd8bb221c72f32aa83a0e1e6ad35b540c5d67854a5b790033aee04b2b430d. 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/USCGJ1246465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92ece56e69efaecbc2ea68aa6f8720cb039fa017580527d9b2fa198e6e300b7. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USCGJ1246470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bffdb25fd75dd5b1b8238838aa580ec0506ad126c8b218bd6d40b4e5f4788f7. 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/QMXDC1100414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87034f863b25388c05d65b53cb4c619df3abfc0f05a18402349b5d77f9732089. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:09:34Z), 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/FR10S1562784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe723c829a1e451b2071691128580db3fdd067f2caf70d02c5ed170cb87252e15. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FR10S1562788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad42d725b5532cf89e0c13bef6b0ee4a5d2cfa15b6708e8b6addc5cc8919b63. 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/FRX201625381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6963358cc62a36ec02d02db477ef567dda16e8b2fb5fce660f4efe0cf586ba. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/DGA072121670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb6ac1d9e739cb809392ded8b57a37af9e1d5af95672bd067f6fc02fcf735e5. 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/DGA072121672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88ad5b48fd808b5743251ce44bd36cd71e67376d9e73d66b6a101ed39c35f35. 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/FRX872189356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358afcd3e77cf0f6f7f31463dace868c0947f6c4ca9fd241d6de34bc7ebc32bf. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:28:33Z), 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/FRX872189357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0006c77c898d20961c7a423913b432a303172898c70b829984ad1257fcb674f. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/FRX872189358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8487f363e0da983efeafa62c6f89a07be9b7dbebf93a397d1120c928fc494306. 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/FRX872189359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc4bafe6ee2a382bb6c0eb70df1c2e1fb1e4a423f54adeab921604524ddc826. 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/FRX872189361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360004ffe4073fce15c70e7b3aa2630203948ec6eb1c8434c4c26be09bf92cd6. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/FRX872189362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157bb1197b7d6f149c81e9569a88d6b43ab233667fe12ab412925552cff280da. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:35:16Z), 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/FRX872189363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1ae4d0ba9b1dac3a3550ced6511e23a343c025958f8099d1205548b432c742. 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/FRX872189364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e96012731aa9c304434a02ca588fbce97875ae10e00a3fd2e92c6187cd2ed1. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/FRX872189366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e8e6783ff4d14a650eec1407d5a88371a3295cb843d1e8040907c0c8d96705. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/DGA052348692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd54947ceeaeeecb05b28567a55d4946d4d7d4cc05f2003c2c14390e4b7edc9. 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/DGA052348693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ddca1ad839744c200d31bdfcb0aec185ad930c7b289865c106fa7f685ad6271. 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/DGA052348694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad5d26f1c63c8362cc59f27500997c5eba9e0c823a581fc2f825688bcfd4784. 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/DGA052348695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d541323cb1778d67b8c5c2dff0cec0a017799da1e9804fa69e34f42797b8c6. 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/DGA052348699.