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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 0x7eac54e6f04ac3f9e0e4ad7c0e098b3712df3f2d6bfaa7cf9baa6364da46c8ee. 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/b32fd305-1f94-4201-99a2-1489cad95dc2.json and https://artists.proofprofile.net/proofs/artist/b32fd305-1f94-4201-99a2-1489cad95dc2.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 0x22412eef449722fee27fece1897b05ffb059d2dc2e63fc232ddba83629f1d0bd. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/CAU117805146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf10af9f374a99b20990e42cd86f0a36d6f80b4ef5fd548368a1ec608e3bf0c. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/CAU117805152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2240f2fa1f40fb1a818f7ee07630214ba9ab1ef0a1d7804c968162f3860ec0e5. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CAU117905139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381568c6aca23ad10ec9f6dd465495c3c50a874c135fa7af42e3a928770b05f1. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/CAU117905141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2cf89bb74f39ba50af813d3d1c36c9277d146aa6755b7ca4f3687544bab4a3. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/GB5KW1800373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6dbacb9f25cf24e903f0b16d374d8e34465aeec40847fcedbf1fd7de411bd7. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GB5KW1499754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43185fa0367cb31fd5dae13a663e7046f650c52330e694aa784177563e6236f4. 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/CAU118005134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0fa7137305737a325c2b22c1ab648a218d654a7becc419163ed880a394f7b7. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/CAU118014633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a98da5b5f70e90db85c39c48fa7de10b59504ac36af50e71b54d663828a6097. 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/CAU118109253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9831281ea3ac606752f716542fa7c727a309c95a84b07166e629bb1788b9df. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/CAU118109255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425d6e671bf10af51ba9fe9eb113de4462ce61039d1d49c3cd6b9cfcfb35b867. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CAU118109256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a76128ad6663fa031ad6a8465e363f367a6d427dac291189a56de7e8db15ae2. 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/CAU118109258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d18d04290eede67f6336daf29905797d33137f9378b721fd47e16cdcdd0874. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/CAU118109261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc199f793b5c34022bbc2f6d9ee9d4fe4176f87700160cccf0cfe564ee84bd998. 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/GB5KW1800383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b944c6555275db99d613350643e4dc9b1d34a96ff1e0f8e017a393ff66c1ce1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBAJE8100057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabbac0362ea82f5225de28777c9c5566e10e89e9ed7617802d1e3f63588e9779. 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/CAU118309270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a874069817c714890994661f705821a784cfac33041818f7405626c155db2c. Chain 2 (Bitcoin): anchored in block 958752 (2026-07-19T16:00:28Z), 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/CAU118309273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1da4cb5adc1534a30a65c2a821c7f8422faed7955c3c5ae2542203435183c8. 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/CAU118309274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd363f3eaa7dcafa44aab7112161d58c1638b2dda421bd792ce65c7cf4d1be95e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CAU117605123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27666d2cedaafdf94b3d1561fda2c6ed260d20db072c0c1d9e7e5cb129553e4c. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/GBAJE0611117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9117daaf0cd90c0e196fb5a85240111be3a91f1b3908b6ea1ab91f79f176312e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CAU117804791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67fd1950322c7d142fda991682e0aecdb3e0c2e23f8f15b5bc285901c5fe98b. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/CAU117901169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc7e2de9d770a37971acdb7fcdd1adb3503cbf5aa0ad2f63f1c7b5ec7eef0b6. 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/CAU117901170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcca9f29fc073d0f1817ed3f9b48c3f973e1ba92fe05813ef1a3cfc4f7cb3456. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/CAU118109252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabbac0362ea82f5225de28777c9c5566e10e89e9ed7617802d1e3f63588e9779. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/CAU118309270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13457efdc230ee0cb9bf0ce8be7b7db9bf39a58ce265994166c2d5fa2bbeaa96. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/CAU118309272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73502646f157368cb66f3a83381be3a90bb2595221eb3ee86c80097b7ee742c. 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/CAU117605118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5752220f6825992930e6aa0247098cd70b37b8ba8b9f3bf8e3140f73a55f2a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBAJE0611118.
Fantastic Voyage / It's All the Way Live / From 9:00 Until (12 Inch Classics)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2441ca497ec7a2bebc217565c617032828e6559fc2d679f092473aeee81846bb. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T14:12:28Z), 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/USCMG0301411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5e63f14b084aca13abd73a48504e206c047b05c6256e0d1dc860664962afce. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/USCMG0301412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0467f60221a5bf60eb14029593c17ec1885bf29ce1720dd49bd0c7bccf3a58. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USCMG0302762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7833d4a7e6ca9ef1658da25e5f8afbfd5e6941f7c7f69e1e2a29efa89dc55e07. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBAJE7800111.
Funk Masters : Classics by the Legends of Funky Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237634db7651e2036ee6dc6be936a3c69855bd39fd1741e02c6e9e835ccdbdba. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBAJE8000368.