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 0x6e5396f41094132ede706fab8f1dbafce2767587c8685f9140b444db4b675af4. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/89b669c3-960f-4db7-ad4a-5decf77860c9.json and https://artists.proofprofile.net/proofs/artist/89b669c3-960f-4db7-ad4a-5decf77860c9.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 0x1cfdc8d9436ebeeedfd3489eb42d8d8e4ddcf07ae0eb5d89f01a4951f9f23de8. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/FR59R2142165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50225a8893b52915fa666168c64e3a0a8e75b1f47b54006ea2053532349b9645. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/FRX872199392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f113775b6ba685da63458457d892848750cbf3bbcaf407eda5ec1aa876491b5. 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/FR10S2255194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01647566cac12b76eb3374d7fbb9ca76fe8288909934e010f852a29477d3610b. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FR96X2243476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750c4619f793c5e08566e691c67e55e7b536a230227de70a39bd1ec016e7ca7f. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:27:08Z), 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/FRX282224427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eaa1cea27fecd25f5d695f4a8286bac1169fe9ebc5b30cdaa3182930b9d7a14. 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/FRX452273973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e27caa1403b2020ecfcf5a2e2cc58234e121797ba315ebc466604a5167eba8. 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/DGA052212952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f6bba8d8e0d0a969ca7dddd596fa4955be11a56946beacf2b2a0d9a8035575. 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/FR10S2397791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4feb03a05bd76ab8f56aedfddcf513931962844b8546d82a3cec9c16fca82e56. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:44:24Z), 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/FR2X42345307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6779da1c2ffa3c16233c6fe70c666c76015b5de09e7ea03fe5c9ac46ba4a535. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR96X2336637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c5338b9e13eef9f7e9034b5d15d501dc5d2f5329f57093fdfc39d48490b7d3. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:35:15Z), 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/FRX762394892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c43051df22ce6327bb81faa4613aea171de8896ebf3c714e765b184348f7cd4. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T14:01:27Z), 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/FRX872375956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63dc2d38b936c6125407bb6a9529eab4fb3ad7652a36a2e365be5d5cb2656c1. 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/BAA052339358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1345207f3a9bb11a2d0ece8279fe7689e77df6a688cef446a1c54f62aa93c6c1. 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/DGA0L2371940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd872210706bcf0de20332046384d01072d1455fbb57902f43a4b5dafad0d204. 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/DGA0Q2343451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e604b531d1eb03ea788e60d21249574c9bdba26710a58a473af0a30c65f279a. 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/FR2X42415247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c31d71d43be48670a2460bc4fe697c7961ba53faac1720de34d2f55fe827eb. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/FRX282411243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2d1776e6d6b4497d279419bd0f329d0f879a80294a71745fb188fb7b6e9c2c. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:51:40Z), 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/FRX452421473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0750e334b3b2e28267d2035a520caa7f704c76bec5016b92037453b7e7354f8e. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DGA082416024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7ef5f2989feff2e453f45e89455867d48c45f25b0e18588ac397573cc0681d. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DGA0Q2483513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a83bb45161cb83778b46075b9c24ed5f5b0f1f68c5900c3b92a26eef7b04a0. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:26:13Z), 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/DGA0T2452725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2835bb84ba1956dc836edb6a92ea95f833aec7c4659c319ad37349bedaad605. 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/DGA0T2452726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8e7c19010ec14d34d2e91c0ee9b1ab73e766c02725b50235a0dd2b24911f20. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DGA0T2452729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01980c614a2e890d054c696761a84505872741818ef1ec0b78c36eb14b84b3c. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/DGA0T2452730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b68494003c88e0713287ad80097edd705daf5e2fd3528ed7819b86fc5050e9. 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/DGA0T2452731.