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 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 0x8aeb8bbbdbc8c100b0040c8f516a10db3e3ed4096b6ec256f7eaa98996ec5af2. Chain 2 (Bitcoin): anchored in block 954553 (2026-06-20T11:51:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ae0be2ac-dc4a-4c2e-bf08-9042f962921c.json and https://artists.proofprofile.net/proofs/artist/ae0be2ac-dc4a-4c2e-bf08-9042f962921c.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 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 0x2190ce53f5cc22af02cfd67e1442251fb41bc119092b7fc65315991326e4a761. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/AUAB02150155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c630b0a19311aea1987f275e7cda84b9251425d597ede0808d77c67965a69d. 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/AUAB02150156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63e3aa57e65ed210f913cdf7fd14ed82fd0870fdcb6ebfcdfe7e91c715b53a1. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/AUAB02150157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ad668b5634226f4f8a42bdeb8bdd36a894e6fadf7e17415c5a87401bcec7bf. 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/USCGJ0616427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x366285aa6f77834c62c9e3d3ce38f667788167a294e60005072edf0ee11400b6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/AUHF01316501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d0d6bd42e99e2a98e358a19be54ca163479877e86d77edf68eeb2f11174748. 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/AUHF01316502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x659134f1d7f33d4b7453d953872de7274a66f55469352abdc0f402f1e82f5af8. 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/AUHF01316503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d14d41f45d2299d6bee0715d6edf98f7a7f9d1640f00c813cfbdf863ba014f. 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/AUHF01316504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21465f0c693d2dee1505730f39c82423c0cd26b95a18499ee219c95246734ecd. 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/AUHF01316505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746c484dc60c79d32b4c360bdfe2e1b42d71cc4d447afbffa226bd9a498e63a5. 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/AUHF01316506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a7de588e1b5fbc4a09d5e1be40bcaf42f1f2c434cfc14b2c4c40d7de644b91. 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/AUEU42200120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21d1275deb387f6d72d43cc681608cc46a32f151cabf83b5967a74bb26fd18c. 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/AUEU42200121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb422aff2dc8e0fb6a3f7326f306b5a46473d96e2dc9bd0c201c55193b6eed619. 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/AUEU42200122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3255dd803b0dd2b2d4ac272dd03c131cf25b24d4e1e7a78c57f7d10937cebbbf. 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/AUEU42200123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9d5c6a193a6397f4b53e61ccc29d828aab84ed67fd1eb5f765e695cbe34eb6. 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/AUEU42200124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a47a48dbae634a69272a8c0679f020da1f2eadf59c56a2a0ce26b2a0b97e8ff. 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/AUM8E2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb215d33ee6b7bc2aaf3b2f32e91d42d5be3c1be123e5da1dff9199a2e65a42c1. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/AUM8E2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cba90edc46d3ca8a16a9bea879c9c7d8ba9812a0cdf2dcd9b8f204a05bddaba. 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/AUM8E2400005.
You'd Be so Nice to Come Home To (Arr. Sarah Mckenzie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cac88edc045be309ff502a3ad0ee1e9765ed69f608349af993bae0dc1b7d736. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/AUAB01150241.
Love Me or Leave Me (Arr. Sarah Mckenzie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0184ea20e57b6346cd66ff3372939bb6b8f1f107595cc52c2fd3195906c2043f. 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/AUAB01150242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671698ee7380014d81a948bd3663d827766faa749c1ebd743b19eedff71e3347. 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/AUAB01150243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5889ecf0f394389d1aa4c24abb5e92e1bbc5cc65627d4f0898c552cdc00ce12e. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/AUAB01150244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5662ebc6e4c59001a30251bf3966939c11146750149971a18235154feeb02a. 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/AUAB01150245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ba161bd2854321d2ce3819da0efd3bda46cce14cff1a8b857f4ef344b7517b. 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/AUAB01150246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84aa2f8af127ba3a5a809042b5d37cde46cdef571e78ed064189f1ffe8644598. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/AUAB01150247.
I've Got the Blues Tonight (Arr. Sarah Mckenzie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1946cefcfc849ea885102ed732e628b85f0632d8336278658eb8153a7233e10. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/AUAB01150248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b937ba833d755d7dbae9de86515d043a904c597146f653963ce59049e026a9. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/AUAB01150249.
St James Infirmary Blues (Arr. Sarah Mckenzie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4970fc4020b855815f7b30581391b00e141d7ae9806485ea73ec8c73f6fbdf7c. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/AUAB01150250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73255ce812c035a680dfaf4a4d99d1fd1569f8f56cd55a0ce346266c5c489b95. 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/AUAB01550273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174e00ba53bd2a8b861947d406043eb98864fc07b86c5ce58bb3c4b5300ca9fb. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/AUAB01550274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5384d34ca4c0857ae493b915cc33f08334a523784e07a59b828c68594f81f88b. 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/AUAB01550276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x056cb61edc051041df089f89c99632b335083ff44af5f6043e0833887d13977a. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/AUAB01550278.
Precious Energy - Homage to Leon Thomas and Pharoah Sanders
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc3a52ddc9912475a4a16e05379649e0720013ab0291692ae6cfc9353a100a5. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/AUBNM1900104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8716512783696fe98e4424b9e848574be22d14eb07f9223ce3854bf0236a5bac. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/AUQQM2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404e0be444eef15ee367a3904084c7ac30499806b863337c978ceea7c134dd51. 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/AUBNM1900124.
Sweet Sweet Spirit - Homage to Doris Akers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4eb036e2a7410656cd88dd6ee2240d94b3900a4ac43ffff5b039f6b7389a8a. 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/AUBNM1900125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202ac0a2741fb760abaf431d8c8cb1a2261aae65e4ed84dafc6d8e3e3e412bdd. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/AUBNM1900126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc8006d278fe94b41dfb74d9158189462766b720faf8ad3b8fdc1f008e1d260. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/AUBNM1900127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc3a52ddc9912475a4a16e05379649e0720013ab0291692ae6cfc9353a100a5. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/AUBNM1900104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e2b75474688097184a53c0ecf3359a5add83d4cc6ff2c946bfc94f33cff63b. 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/AUEU41800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b48536cdccd946f08418c6bc99f3ddd05f1e5c17f9839d268b902485ec3693e. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/AUHF01011803.
Hush Collection, Vol. 8: A Castle for All