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 0x2417d860edeba45b5df87a408091be24dc3d15ffa203fbc6ad112367e50fcb19. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/739e797b-7546-4a6f-90bc-dccf4ad68f99.json and https://artists.proofprofile.net/proofs/artist/739e797b-7546-4a6f-90bc-dccf4ad68f99.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 0x8e5fa3533a841120cc895c7af578ee9cdcc7762766969e2fdf24be3b54ae1bb2. 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/QZHN72299155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4deea86393c04dbb492a74a43530ad7eb1878459e2e56d14164dfddbbb0094. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZNWW2244781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8cc81b9f7abe2c110f8c66de4843361ad8ed1d772c2f3819b1a56636d9793e. 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/QZRP52240360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76f83d3402e06e2397bfdfcbccb769c9313dcef3955901f68cd2a21669ef50d. 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/QZTAW2272454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc61e3ec510815ac1ba3576182ffe98d4842ae7742a9ae5b28135a2cd06f75d. 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/QZDA42392155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1fbde3b82bd41df43fa892fde1156c2acba4a9e866ae5d7757e3aa606853d6a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:26:43Z), 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/QZES52305854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82eebacbbb8f3db54b49ded19cbc292677ffe17594a24ba4fbb3a19cb94562d. 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/QZHN92358765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb550f2de005ed3c98eefa053cf5bd9017bd94ce2913cb3e57507261927c4a7e9. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZTB42313203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9331e8c7664c6e8e8235c0ff6750fc6fabfb7503faef3370098840bd550ce007. 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/QZTB72373215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31bd2bb606d5eff1c40763a0c26e2441bd7a2cdc4df7bb1c9e6ac61dd9745e8. 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/QZDA52442678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0f87e2394e4c8f9aa6eb2e671e6bfb36219f9424f2780a46916b61cf354d04. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QZDA72443276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc1b27d47d8ae62e7a6e860dd296f74b51076a462dc1328dac044f2bbc7214a. 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/QZHN42415117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559a87899f7405ef03fc610c88c46508c113a7b47d27b4b68311b9c240111695. 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/QZK6P2412567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68f949c11ed6172acac59862654f1c264fad9849f079bc2e3b2a175d5f0ca0b. 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/QZK6K2418405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0afb596ff4b223574a0b395ab1cde48c6ddccc8b72e663ef6972c04de12c66. 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/QZNWR2431112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe300e10ae9485d558d5a45f85871fcff512d7acd56af892cf3e550bf7ee9bc1e. 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/QZNWX2409384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b6ac6a77aff84162ebf060ecf4b9494921bf3c772c6757166e7851bde75db0. 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/QZPLR2461624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b487d333d293497bc8fd3d1465b9e17576b0d16f3b86ea5438b021294332388. 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/QZTAW2451016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaecac7b6d25ee8912625b74848d16ce4ac9f1c52141bdd0d674a71d9e14bc59. 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/QZTAZ2409973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1293bd418cd45ff6ce7c04dfcf9ead00148e53ca9c7ed83d04a69c47fe76a809. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:51:06Z), 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/QZTBD2404065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89147015f02d415be661d1bc36260ba3d0073b02d061df8083e595bf979e2140. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QZWFS2417847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fdb889df9cee68ed9c05815a723ee0c51fdb5288a269d2ba62e7151b0a59837. 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/QZZ782404049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1c05851c33266490ffd9473811f721de198cab406e7f44b6802d0ef76270a8. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:46:47Z), 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/QZZ7P2468700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1dc91129c4109060071072f7fac977a127fa00aaddf3a349170f4c8d7432550. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZZ7T2425445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61963d67ee8f33c863bad5334af4f62385d10fa2ddf254c85581ac057da119ac. 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/QT3EY2402235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2401bddb76be0286e108a3eb3a207b21168e9c3831ffb8afb84706e5ac997dfa. 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/QZFYY2518903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330a94d5f7555777bc5669541120b64306396dc8fc56bc2311b6b6c78b86d1d9. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZDA42514580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbbb04b350f9860aacb6d33ce712facfbd292b7eb4aef7127c358a993f9b1d25. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZTAW2558115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd14002c96ffca7b219a106fca06b3561ec800710b1e754f1f38aefa2c739e382. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:45:31Z), 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/QZZ792531680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676108a656d9977eea0f56f92e6f1561fc802a47bd9a263b8a023587615e3531. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZZ7U2560638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01587b37615f6245879cf2292c74af7f010ae1395d24e9595dafae7be22206b8. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QT3F52507321.