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 0x7f3b2f8db29591d8c920d9d8e2f2a2208febfb35eae06849e84fb64ed11bdf53. 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/b830003c-c9a1-446e-9029-b2ea9a2de7a3.json and https://artists.proofprofile.net/proofs/artist/b830003c-c9a1-446e-9029-b2ea9a2de7a3.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 0x0c386439a820a868c082e2c14bb2023fd7c451efbbad9c73bdac83c76bdc7409. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZTAW2380801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478c12cdc6651edaf22874f8eb5f81211e0fc3839f859a147ad3e4807ed5419d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-22T01:17:53Z), 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/QZTAW2380802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1454b604779da80db6416b05a52959086ab5440cf435bc024df65d0cb8db4a20. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZTAW2380803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f230e33bae377af93558fc81f3bf221a0d34d94b689e0b4f8f5a0912d5fc1f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:23:54Z), 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/QZTAW2380804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4516eb3a8e8b6c941cb341011c622158824c910bfd5ef5efdbd11a70f7f35a. 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/QZTAW2380805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9ec7e8393dea6ffac98252e730c654ab9e2c12d9d105a8ce1c029ed1c17db8. 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/QZK6K2209295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549c8fb6d065c8232ca18be1deb0e801334752d11afac6a25ad0a2a8ad14637c. 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/QZK6K2209294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202473812e8d309e53e1a007f80c4ace74129eb87454af8c8e361a66ca11d69b. 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/QZTBB2248251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d655cdf967750e5fb06914932edd3dea409314dcca996658aa20eea20334cd3. 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/QZHN82160513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe991dbbad4597a76762d39f2e1db079d5766707d2f3314bfafe513dc0c3ad696. 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/QZMEQ2020989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96a8372803d5c40655f7d1e0f63685fbc43641a21e1e729ab15b65adc7e38ea. 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/QZHN92020010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5329db81ea432a5c0e9ea8599c480f19defe8bc4c5e51359b4668cb3a5e44e. 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/QZHN82160514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153e83f11a7cf187a89bba69cde8d3b658bcccc407d10e4f27c00fa815ba18e3. 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/QZMEQ2020988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc25b497fc7ace4f3e52a662282286791b55c6cb7e4b85a9e77adcb8c3a5fcd. 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/QZHN42033309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51282770af34b221ba13234d7baf8f6f6f86a3aff9335f693b0ec601ccc234fb. 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/QZK6P2010240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e30929697c442f9f17521d2b4a887ab4bdafdc72f776fa71619b019542b067. 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/QZNWU2015542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806026a31ba02977df8ffe482f8727d8b616251e77e400e0fc24f220508410de. 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/QZHN92020008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c81d978fc164a37b50cecd0b16f13f9f724dfd829442ee812eaee9ca813fa8. 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/QZNWU2015543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9025cbc901c6681de85d04e444ea631bc593cb3e899db694bb09dcdfc1710e1. 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/QZHN92020007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f44a2660cd02abf57ba88c8538b704ca318e38949b10aaa3f14ea0abc6bb42. 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/QZDA52019617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202473812e8d309e53e1a007f80c4ace74129eb87454af8c8e361a66ca11d69b. 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/QZTBB2248251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549c8fb6d065c8232ca18be1deb0e801334752d11afac6a25ad0a2a8ad14637c. 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/QZK6K2209294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9ec7e8393dea6ffac98252e730c654ab9e2c12d9d105a8ce1c029ed1c17db8. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/QZK6K2209295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e30929697c442f9f17521d2b4a887ab4bdafdc72f776fa71619b019542b067. 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/QZNWU2015542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe991dbbad4597a76762d39f2e1db079d5766707d2f3314bfafe513dc0c3ad696. 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/QZMEQ2020989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c81d978fc164a37b50cecd0b16f13f9f724dfd829442ee812eaee9ca813fa8. 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/QZNWU2015543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153e83f11a7cf187a89bba69cde8d3b658bcccc407d10e4f27c00fa815ba18e3. 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/QZMEQ2020988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153e83f11a7cf187a89bba69cde8d3b658bcccc407d10e4f27c00fa815ba18e3. 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/QZMEQ2020988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe991dbbad4597a76762d39f2e1db079d5766707d2f3314bfafe513dc0c3ad696. 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/QZMEQ2020989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51282770af34b221ba13234d7baf8f6f6f86a3aff9335f693b0ec601ccc234fb. 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/QZK6P2010240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9025cbc901c6681de85d04e444ea631bc593cb3e899db694bb09dcdfc1710e1. 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/QZHN92020007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806026a31ba02977df8ffe482f8727d8b616251e77e400e0fc24f220508410de. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZHN92020008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96a8372803d5c40655f7d1e0f63685fbc43641a21e1e729ab15b65adc7e38ea. 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/QZHN92020010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc25b497fc7ace4f3e52a662282286791b55c6cb7e4b85a9e77adcb8c3a5fcd. 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/QZHN42033309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f44a2660cd02abf57ba88c8538b704ca318e38949b10aaa3f14ea0abc6bb42. 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/QZDA52019617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55fb419d64da28686a94a11e4bf2255b0b6e1d536299783f11f190c0de6f191. 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/QZK6Q1949063.