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 0x783e1ec9232ec61192e03817fd7a3d6fc201b292046232abf41afa0d2881bcf7. 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/27119f96-63f6-461b-8383-cbd9691dbd6b.json and https://artists.proofprofile.net/proofs/artist/27119f96-63f6-461b-8383-cbd9691dbd6b.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 0x8282168f2b0500ad0ae0b41f0dfec78899fc286de2426b82d2c2cb2467a7dedb. 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/ITC899000051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca3799cc9bc8ba1ba2936967a0b086484dc580c08963c779144c7a2e667ed16. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/ITC899000162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb812235776e2da40351c38b2781e98bca3135ef358c67182c0d4aee8b7453086. 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/ITC898300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5b453d428d146dd3c8e776340d3ddce8c705b69ef1f847065b6385fb94196d. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/ITC899000010.
Full Time & Antibemusic Rare Tracks, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0915a14a09700fb4022d88ef6bf541a4db7966b232c92fefccefc6805940a95c. 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/ITC899000005.
Can't Hold Back - Massimo Berardi Filtered Re-Work
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e63604da7efb9133752b3e6770a46ce75883efee73e6f169f0863125a2e318. 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/ITC891100080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f376a046ebff195f3c35297bb7203179b86a242f3b07b6364124af07953b6e. 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/ITC899000513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd45d52411906bd870e337355b16808a45f0c9dc15891965bb9035cae10934c3. 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/ITC899000059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9e64ef938e04743e91f3181b67a4a1cdb5ee273deba376b066fb10e671b15c. 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/ITC899000098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e21fe03b3e2849d71a390d725004dd1d8bdff68846afe8bc09083d1df1c4b6. 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/ITC899000099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615e33028b7a3a422e1f48976404547dc420c031798cfc8931ab46b89d8e08c9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITC899000104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6040ebba668671cb1f8bc78a0b217ff621ef8a38860f3fc2b6fd96535b485d47. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/ITC899000105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0237891f1f11c4e0586ae2fa8fe184a83ba72481e0a28ca8376abbae8980b57c. 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/ITC899000106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb120a0a1b6398332bee2e1e8dc1e91fd3dbe09356e95640fd16ced66782046e1. 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/ITC899000107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98264254f22e8461404ccd847c6dd0c391910e16331f880fc1c2c057fe4ef15b. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/ITC899000108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5989006bb555902421ace58770ed8c7cef5c6a3aa8997d1bc6823bc4c96db788. 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/ITC899000109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80efae22604802f7e5a19db4def0b156812279f73d996797a7b9495f4cba00d4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITC899000090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912db135037d40e345f3f9e3708ba9abd600c71f4883b7fc72fe4cd102094fb7. 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/ITC899000091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e115ed3d66bb6351d22e69296ef12633afceaa06a1d1cf9bfeac6f4e503850a. 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/ITC899000092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf717a1cf12b211a78de86ae9ef2e03214af0f455535654339f0b5cff8cb17880. 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/ITC899000094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7a8a39dca4a8628dee6957da93fdb2797d4b5f22a8b9a1c1ad29389027f3a9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITH152000025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a2b4e00225552341d719fac249ccc46d98750efca776e11eb75d8edcf35824. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/ITH152000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd45d52411906bd870e337355b16808a45f0c9dc15891965bb9035cae10934c3. 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/ITC899000059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf38c86892aa815ffcff542586db0581c14ae49e113d6989b90aff0f9f63bbd. 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/ITH151900027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15676c3b260a43349030bece1fe07bc005a3b786471cc21822dd208a7704bbc0. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/ITC891100012.
Stay I Need Your Love - Dario Piana edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa2d93599e2cf273ad58f3159cbe046f04e3ab33c25305eda47c69056e63b82. 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/ITH151900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fbed421b8cc47d45d09d9ce4e0f0f43cb1c1411f7b25c6a2563e3135b25855b. 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/ITH152100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace837aed5119216137b78e924aa7f6c92f935a98192aa5213f20fe7b2ea22f1. 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/ITH152100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00bdf3747ce90fe0db45d867b589d73fa5cd063e26267ab6b2da42d6f2ea4136. 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/ITH152100013.
Full Time & Antibemusic: Rare Tracks, Vol. 2
Dance to the Beat - Original 12 Inch Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a21d678e6e236d184ee4d79d7ddfc70a23cc32ea1739f17900e3dd838c30ab1. 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/ITC899000211.
Stay I Need Your Love - Extended Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9b47fd80cea776e30f41ff7c61f00059b27e7081d1bf8307914c312eadf463. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/ITC899000135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1dcf27d861075b6e1713b4f13395b9623396e4dcca8fd33beddb3b0f0a3e34. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/ITH152000006.
Fulltime Production: Disco Classic, Vol. 3
Fulltime Production: Disco Classic, Vol. 1
Bad Passion - Tiger & Woods Speetalo Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a4020afb619c5307ae3cdec0abaef3cd57a6fce6304a3a111c4f424cf7cb3a. 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/ITH152000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49aed3aac69d72694afa092c5e8e2302a0e1a0c2043cbac4062650dad699b659. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/ITH151800001.
Fulltime Production: Disco Classic, Vol. 2
First true love affair - Larry Levan Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99efbaaa64318d75587cd0ac52d7a58ddc6fe13f4be31699f042b381b642c278. 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/ITC899000110.
Full Time & Antibemusic: Rare Tracks, Vol. 2 (Remix)
Full Time & Antibemusic: Rare Tracks, Vol. 2 - Original