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 0xe430abe28fa5740ed405bd72aedfd72c3549e357ddbe42e07a1eefd181dbae18. 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/02c57dee-5f50-4f99-b2f6-7d9decdf76e7.json and https://artists.proofprofile.net/proofs/artist/02c57dee-5f50-4f99-b2f6-7d9decdf76e7.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 0x5b2a453ae3bf10b84929c7f8f73418b7beda948619990011682b932a1879db9f. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/TCAHJ2380641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0241f620dc43eaf06822ebe7fbade505d5077fdbb0527585fc8350d64a32968e. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:25:12Z), 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/TCAHJ2380643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b34cf95fb8814d5770990321797825c04b72f603991c4b1ae5912f5376fa445. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/TCAHJ2380648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb690af67a7dfb6453ea25b158744f63938633a1daa05aa3f37f1b9b283b689ac. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAHJ2380651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf6692990422ed54476e5891be06167a30967d7ef6c31c13ed9c17cf8d420ac. 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/TCAHJ2380652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65eb7b413e10d0440fb83c913a5b3d0a179d64ae3f51ed292db6b6eccfaf390b. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/TCAHJ2380668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cbda2155554cae03b70ddc072dd2ad007a64877d1e4ae0876aea6891b2b4676. 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/TCAHJ2380674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef28ee161347b2111c8fe60484e57ace4f2f053dc25653666410b440fbaad3f. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAHJ2380676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cdf2e1ea01fd5fdfadd9431e3a3e687d5a2153db0891a4adc2fdad548d79436. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/TCAHT2301573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559b882c24fd7553247c33acab00e2a72a9ac145b21df5aa8285a717f13b1b87. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:07:44Z), 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/TCAHT2301601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc934b5ca615257234df217aea3e26a0fb8c0f06c4fd8081e29960c18968042. 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/TCAHT2301603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d9c542a920b0559ee6016a14f68dda21f6170cd2b90a25a30941db8500fda8. 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/TCAHT2301629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46917a68ce3c653be3c3ce46b652d172ea7aabb4865f433723f98ab1f2e1e4b6. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAHT2301640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f43c665206bd947292f113ae5f3d78d488fc101cdd93797bec7570e01ca798. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/TCAHT2301648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd932b711dffa1f706a3b906bd9f83b6c90d2919bb6c88fb5eeb98953e0fc83. 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/TCAHT2301658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22eafe26138f80fe0f2f193d4d578829cde0f960e8e01ee6b3df14c5b87f1bd1. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCAHT2301668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f48e5a78afa5abcc6366d99e77f8d8caaabf67d2edb592758f76897af2ff73f. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/TCAHT2301697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b061edf4293875b126d793e3535fb7a587d4f6fd070bcbbe976fd28e73a447. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/TCAHT2301707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f93365ec90976a5964e49b54085c2bddc9befa4d31d8af380e813972f87ab8. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/TCAHT2301735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6068887589dae229457de2e11ff5a4a65c147c81da99098e0efb2275b8794c. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/TCAHW2436524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d209c52a4cd0f274bc56faac0e5d766d2dd190201b4f30b798385c1fe086d35. 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/TCAHW2436530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10fe9aaaea90191bee921df0e0be90e6dfa6d12d89ff1e408e132fd8f8478921. 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/TCAHW2436536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd571a6ff2594631bce0c7a6ca1954d960947b5c686b9a2faed00f421fe419ad7. 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/TCAHW2436539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc488685452472c84722cc24afa2c7fac26fb7d0a1c2cfbbff5d7cea9223ffc. 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/TCAHW2436541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbdf996f111bef6b20c9bf35d45dcbbb17d7a778482cf66e0a5100dbac68b70a. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TCAHW2436549.