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 0x3fdfde0946603036aef05eaa89546f945f610bb75accb26159c8f2f1b211cdd8. 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/04de89c5-f12b-4d0d-a44e-465eb0d50719.json and https://artists.proofprofile.net/proofs/artist/04de89c5-f12b-4d0d-a44e-465eb0d50719.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 0x723b7f811036099b1d5a542aa6db5a3c9825b2c9c4323ec92a8d0ce0659a65c7. 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/DEBL60693669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb708f6bb5a710d52498c659d97e5bbd07a19f55c4be32a80f42972e590adff2b. 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/DEBL60693671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469ff4e7cb5bcef040db4d5ce70afb08364ed559c59e0ae118be64f0c27c662b. 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/DEBL60693672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a586fea530c75c4cc28e640c8f3a5623c1f09c1312c5da5b9be3d2eebf21b1d. 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/DEBL60693675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64db57288a6f9f3fed90b345dde0d51127ef76416450aad8977937aac98c60cd. 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/DEBL60693677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f661fd176a15a964cd14487efa3b4569cb66005d18620b9e2d59cbcd40ea0e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEBL60693678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b935693c242abdc041ac340fd691fbeaaff4b84bb353f49ee1f1dd31a05808. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEBL60693681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1b3c42bda486a6546e5371810e2ff5eaeaef6c1b3521e12d787b51f5909f9e. 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/DEBL60693682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5ed87d89ece5eac9e1c9c3124013835a0d190b68ef4bbef3630500ff49a840. 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/DEBL60693683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dffb67af171b70d8f98999aa6962b0c502e190d069a8d0c45d782c209c1438f. 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/DEBL60693687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e515f85907e0cfa26d0d854f32ad597aab1261548e3b5933a8bd4afc822fba0. 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/DEVY82000335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82c5dd24f84479a798b80de8de42e0e043e87f68a04caa9b69e94ded501a040. 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/DEVY82000339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1248057dfa7fcc465ab135e722bb450efb8de54a5162ce60c95e0be9328b1f. 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/DEVY82000341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d853a15f2ba0202d5bbc57c23e4c28fa84ac39c97cd24ecd2b768f6fd9b36a. 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/DEVY82000343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda00fc60ca2a2c86f97e13aba5a3ba8295d64993f3543be8a291f8099316d339. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/DEVY82000334.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7718c51d1cccb85de9df997818b1e9f32ff16873a075275cb2c797c9cea37049. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DEVY82000336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf65e56c2eab4f79ba0ca22a21d1d7b9b7df26c463fce1d01985a6d4ab80b612. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEVY82000337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f98f310cd465ced7776239ee21692c478b63a64a955669c8264e92af19da09. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/DEVY82000338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02327472e191adf5f80e4180f4b1c425c3f10d3011dc311cc059031bf1971c6f. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEVY82000340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375f67f9c3c03328f9f4dfe7133184cab9a1e6226ce51b6db5c3ff04d83e446a. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DEVY82000342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f60231f431411b2ce3a60d4531b7a0d88dde9e264c713b29ceb4c3f439d5ba5. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/DEVY82000344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf177eea92b6fa810fcb7dddf70b60b4cacc3a3f6dbed06e6542cff482348f03f. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DEVY82000345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90f274510a96de10bedee6942e96c5afbaac264aca234fdb0c8d6d7dc9002ac. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/DEVY82000346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e40689aa7a5f77125b46368fc82f03612a87d658c129bc01cbddd5c9224714. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/DEVY82000347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1a447f9159719daa2981b0762c559c01b0dddc92897d6911fd027b6e94ab4f. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/DEVY82000348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedae6834bbea0c7dc890449c94a85bef298be7d68b5916e5f08e1325deaeebd4. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/DEVY82000350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e5f2f1684299d6d6f13be5ccb1d39b956186242b85658ff5fc5a465ad517a9. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/DEVY82000352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89299a99cc169facb936e3c2b930213bf4279c9b55524ac9341b69c3e2ba423d. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/DEVY82400527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed9471e4c7fde3520427adca1ad00ed1bc2a0fad9e9b470f7addf1490040349. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/DEVY82400528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b73246a19d83976d05f4905bdfc805f41711d254bd936ce641d63139b594c69. 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/DEVY82400529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb79824d4e2e13013e57be1f984e2a666d1e26ae8286b0b6d17828cfed60b19e. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:06:12Z), 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/DEVY82400531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287aa510cbde6304dd0cd7d293b307f94feb2b08457393b870daea52521f5b21. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/DEVY82400533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7f40bace64379428bcc28c097a584c58046db5e0571491214fca6ae7c77638. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DEVY82400534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e554f4aa70dbc66129ca6ed903caf3681720289d784cb6df5817773d28729f. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/DEVY82400538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf261c5301259ad5bb5a045073067e39d3884e7ee021bb1f551f2828e370b145. 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/DEBL61299887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8545015ee3e34a801d9264a96295ba64051838f3f1aba6d3afe2db2d8fa3c16. 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/DEBL60641567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7864a82ba739c1c8fabd626d67a3d26062e874c22ffd2e70faaa6a4e8c0565f. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/DEBL61299874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424e68debbf2ea24d4a99223528fffbf8b301ec545c97c1b1a4e61d431207e70. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/DEVY81700616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3029fbf9aeb530c7ff9eb42fdde4ccf85df77ca4dcb1a48c1b57286984261c65. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/DEBL60641566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07fe8254f1d80e426cd171b9381d74a6a13566311cf597114f0c21fc0267e2d8. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/DEVY82000633.