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 0x1f4687d9f7352a0b5986ae1d367ba2844265d8beab29a8cae1e8fd4de21cdb8d. 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/2be41da6-9937-4210-be98-62c3bca27fdc.json and https://artists.proofprofile.net/proofs/artist/2be41da6-9937-4210-be98-62c3bca27fdc.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 0x0650a0dd2cbeef124bd7f196d88c1dd86962fc2f74afbbdd1c5f49c110a51372. 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/BXBK62300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681960d93f510bc104fe4b1d84aaff817966c74a277db91b9112a6b1c130329e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZUCN2201650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825e971fca3e3a36cbe501e0dc4a6bbf9d097283abba52e4f03646474824c46c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZUCN2201588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dce67666519575a2e9b743b980bcb53d76765758b0f73e6c71f082b71ecf8b9. 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/QZUCN2201536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf36e0e99c41527d26ef4286ec7873d5a89ae7d4dbbbb1525d9f70734fa62b18. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZUCN2201493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73265eb4170c5c40a31284e66eb57c1fe7868244bfdd06dcaa7c8c3ff79fddf5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US83Z2457420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed4148c57ac43d025a0c6f3e15f5fe4de88d3863cdaecb4cc8fed70f771b5aa. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZUCN2200902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8f37c9e4f4ac487c5045764fbe45cbc647b284bf641d05dad8b928d085c09c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZS7J2337241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082e4dfbf756e142e2852966e25bb84ffa7894e706e84789b8ed0d6f5d5c0bbd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZUCN2200829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3a216950d3a8e3aa5d46cdfaba52d649f1fb19f62e976941b28e5e3c69c341. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZUCN2200555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908467f9cf20ea4902201365d2c50cf069f4f6b15162bb29496ac00070d5f7b0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZUCN2200258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb5ce74f2ae69126bcbc1cac1ab4186c65e09b4bf38704ddaf7de0609835e8f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZUCN2200115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964374c2b6a4016924b0a386731ccb1911e0c2d540b40b7b42012258e8d1ad91. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZUCN2200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771fd8e4c8ebbf919e1d6945a73a3e1e622a641079f3ea2c0eaf0ac63bebd0f3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US83Z2210922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2382e7fee75c921a384c0a007527318b63c7f79837b7c8458e03da21d43ae2d3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBTDG1302472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1478c5cfce242d1a4af35f6b87171f845ab3d85dd4fbe1969095f41093a15a2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CA5KR2222081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26fe54880c56269a5aed204b570b5103dd86ae5cedce35933231108c13c10271. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZFPL2100139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fcc68721322eae41cef588774f6b299af8476c9de84738b77b99bfa42d8d037. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBLV62132986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6211da432a9ac66e0e75ad146f2a08371ecd7205f7e05c99f93bd309930d7d5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTGW2100203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a7a7dc114deb6792c88d3cdf6908ed7958117d5bf9f206b66cab230db4e24d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLZ542101811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd192d15d3d9f01fafc185f7e3f24dd1e1de574e6087a66bad04a3f7d816c075. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/NLZ542101464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b4256d35ff2dc1abd2a8fc5b1d0a5e3ba9b85d46dba796c73baa20b2053743. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMPLY2100018.