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 0xd6c3af58393937fdd2386a589d45cd20feb5fcf067d0043b7a7fd1a034f47f77. 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/4986b228-0896-455d-87bd-d180cbc1ced6.json and https://artists.proofprofile.net/proofs/artist/4986b228-0896-455d-87bd-d180cbc1ced6.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 0x7170feb987c8add1d96b2e8273bf610051b96518c2e7ac6724c0336f09e8462e. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T16:12:29Z), 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/ITA061302505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc27a56d289818a5bcc7d5dec474b59c31936bc1394e4fd14be3fe28d8d75cb. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/ITA061302507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8288f9cb7ef39f2c012b31af518b0c3b0910322728cee5c0d2bb60831d4b2bc0. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/ITA061302344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1d6cbf077a9ca84adc6fd4d8529cee634b8a1b813947d09efd9bf1bf174d6e. 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/GBKQU2446645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6f7c2fc4a0b952ae72a33d21ac6f803736d0a5b95f7b9c3d0c49258936e2d0. 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/ITA061302815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d66458e1c7bd3393788dddd52342575cc5bde055d6235eae464afc6e12b4165. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ITA061302817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055f540a63ee65719d32da2cfae882d32e46bd55719cf0f49e2d444c62f21c51. 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/GBKQU2522855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cef5a838c38bbf0340ef365735cd14963c89f8abef9f19455a29b5289a4b437. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/GBKQU2574009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19172867af1fae66c0d7ebd6ea3c2fd325a7f887a333266d20d3f7df4ae0a4f7. 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/GBKQU2178061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a94a7f79f6203069104b6ec619ed71bc9b72d3f09ef3bf438f2c8e672f5f2e. 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/DEW872401237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68e06a88136302528040312773626ef901897c521ac5699bbf6ee53f159769d. 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/GBKQU2430411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8e97ad8afdc0a86245e3dd0866dd401579cf36b72635ff9ba05b1e3d1ec9c8. 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/GBHAD1901545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b698313e5adf66ce2c6efaee633ce87c20f74b4c3ae78b0aae6973833a8808. 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/GBKQU2389547.
Senja In Bali (Mixed) - FeR BR Tech Remix
Armada Subjekt Miami Sessions (Mixed by Chus & Ceballos)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9247e89ddf4b3faa06142387b71d8816b8bbfa30c07642f72fc0768fe16e01d6. 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/NLF711902444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c94b125b8314088ea83e79d4cb2be03d1e05dd92de769915969838a4990cc6. 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/GBLV62419182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5937e48c7c4892405880fb7c9ba64a815db8df1b0857feb912976f21e0af33. 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/GBKQU2489452.
Old School Never Dies - Fer BR Remix - Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7059942391ee4d0702bbfbc10cedf0b126402ae25eed224018e80640741456a9. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/QM6MZ2579353.