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 0xe3800a6be880ed9abf2977ef5f456dea997650face4bcea77134f5e6805b3a61. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ce402f21-f999-40a7-97e4-788054d88805.json and https://artists.proofprofile.net/proofs/artist/ce402f21-f999-40a7-97e4-788054d88805.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 0xc3e2f2ce50c8390051fec4693ac8e9160750f573784bd6180146c6840e65b358. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DEM090700092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6613a42b11dfdcd3509d43208ab70c15bd63aa01c51e896afc678bafc49897e3. 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/DEM090700093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ddf0f6a3780e128f7c904c541cff57e2721bde7386e6621cdce28e2df2efc2. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/DEM090700089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd89f2775af5a6543d596c0b0a114421ba54442facd3f17be83d94dc8c2add1. 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/DEM090700091.
Freerange Records Colour Series: Orange 05
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb75ad500c3e2e76458342524def7f4246978ef31971caed9c937e869833ba890. 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/DEM090800050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d10f447590a97bd8da12ed5a69e76c2a970cd141a6ee71c7a165b2eda52b1cd. 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/GBDLP0800485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38e5ff2b1b626f01f384a4b816e3bacebf028c62d6e8e526f8e262f7f00ef2b. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/GBDLP1400849.
I Can Hear the Light (Manuel Tur Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac82f9aa7297ad17a532d43a90cf6d0bfc48669233adc1289ec53b4a34f400c1. 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/GBDLP2201240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0cc185477eb30a0a2faeb39f8a28647f8c1d98f8b89c952114d813dae2174da. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/DECY52300713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae30faa7331ace1102fd5b147d10e2ee0c8f36fbfdd2687b15752b6a843bde95. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/DECY52300714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec53789890bcd6e1156b8baeab63fc887c03543db1ac5d1d0ee21d75224304df. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/DEM091700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57cc5c0f34740983976fd3967b43ad35607cde77a052a9c0be62d8be784370e. 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/DEP081300007.
LUX Remixes 1 by Manuel Tur, Trickski, Sevensol & Bender, Henry L & Ingo Sänger
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf9f90a1a2280e03fc475b493111f401efb3fa6f7ffff5f60573720680b1db8. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/DEP961300113.
Papa Records & Reel People Music Present: Messages, Vol. 4 (Compiled by Reel People)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f15c062a3296132a8b2e9b6e0d0aaa5915a287a912b8bfc323ef75dfff04339. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/GB7GV1141001.