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 0x0cdf8a729620328e58f7c1028be3258f11006501a471ada5db1c81aead9376c0. 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/678994d3-0e04-4a8a-b154-bb9b39202bbe.json and https://artists.proofprofile.net/proofs/artist/678994d3-0e04-4a8a-b154-bb9b39202bbe.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 0xfad2ebb4f3ea689a257b5a782abc0c198b90d3bbd7bbc894d29d94d3a0335774. 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/QZTAS2262826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cfa3c67b3e2d93d22da5a405a11bd12e8f7ecf3f7b129ea2750a289a991ae05. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZPLR2288137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcfa2909d93d0084696c1bcdd687b5a4cd975d849fb080278c6bca764c7e9285. 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/QZHN72202177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d7335ba40b99afffa7e295d376bdd67a66e8ff20171795f92b8e6f41c63aef. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZHN92291181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd249a740cd4c4b1532f5b40a06fb25a8ad8e7eb0dfd3489c4afc2dba31455a42. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/QZES82292323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912604548faa5854be3df8810333cfffa6245caba6915100b4c7a79d88a43358. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:09:34Z), 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/QZK6H2265585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf59bcbaf69c444d19e10092baf5cc1efadd77b79e81879ed84fcb57101233c. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZK6Q2250338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168edb4e3ad042e1c1a771b8916a9d982114004646a563b28af0a8e7d6b607aa. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZFZ72223546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8986ae04cb5d2a6e15e0a7e10b057c7ed27cfa2f36d920f8429325abc18c95ca. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/QZNWZ2297890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb755a988e998e637f51cc45eee59609edacc8d995a34052562ea620aa3cda770. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZES72272550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9a33cc58276c410b016cfbd98bea0071319caf097f0526b7ea2ec04a43d2a0. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZNWV2220340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9119735a61421a3f156c1208aa3742f27cfc68ca3d5270192472a48fe0a36f91. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZRP52384992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48a960a60fc08d1d8d49cbbcfe4f37d820edbfef23fe96b926607f36cba63c0. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/QZTAZ2300394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4425958317b3af47448a26c0930ef76766e8389553c85e9d6e406f44a88e0c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/KSA002372374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81da4ceeedc33d2f21d857fa716210d6214173d9861504bb6b5ed51cd0f7788c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/KRF632406269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d486c70cf616784254a649080fbd253ddb5f6f514fb9d4edf51c89b29e1e061. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/KRF632406881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37b59adf6b793fb71d5dc049228a6157a8bd0b4fc1f2af7ef378489d4e6a4ac. 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/KRF632407847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04b3535155de1965defd5e1a9aa16af96e79edf148e372ab0aeb2526bdf5570. 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/KRF632500395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce4116dd9894f9867e51cf56af14983089d259d5372b03df60dccba253d69ac. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:06:38Z), 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/KRF632500396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56499944794beb674fec4c577af2223e847706cdb1c88db909dba832780e72cd. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/KRF632500400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9740810e4e065786c48ec0673c63f9aaac807c05ebc48bed37f3ad2dc0661e0b. 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/KRF632500611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a141c6e8f4ab12a980bcf0b799611e0a520a895578b5c505b7720fab29938d. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:50:47Z), 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/KRF632500612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91fda4747419622712004ffa68b6957220123175ebe7496d60f1b88f3e319089. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:04:32Z), 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/KRF632500607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a84c1d49a04ad3d96b086c717a584b2a9eb2603675573ae42935d58c7c4b3b. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/KRF632500608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0253e257160f229822f61f2c6dfae242d6d47843b92f827ddf398d86e347f4c8. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/KRF632500609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc781f345eda6fa11b08669167aa1eee713f9c239523412f02d94cdedc0bfb8a0. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:46:52Z), 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/KRF632500610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822f7fd1c067a4fb50bbf5b928de5e06b38c679704fed9620bf0cb3f5977e006. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/KRF632500752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa30ad686480e9c1de12f07b59f87302a13f6580c06b64e8bc941d35812d9f7. 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/KRF632500944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce455a7bc666a214a4c5d510f923af9f55ba2ceccad40834fac33352d869a0f. 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/KRF632500946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2920f1a17bf3d57a0e048f4f4f175629586200bc10b12894c27d0ce3b1470e. 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/KRF632500947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b9ddbf378b19333fee154d8b8e7963e37ccb1a9122899a52adfc2e52799041. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/KRF632500948.