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 0x7c94c993305b737003904c60484e4741e09788f6827e0c84eee393239108541b. 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/f7d5bd75-d848-4f5e-a667-bbcd03c36e72.json and https://artists.proofprofile.net/proofs/artist/f7d5bd75-d848-4f5e-a667-bbcd03c36e72.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 0xca9fcaa65edf59579907358fca229b6f24e8d2f4ddc76cec040ad96d826b9062. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCACS1644617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6138dcf23105df4d896dc74dfba96f9b0cdd8d45a91f1f99843c5fa93a32ee. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBKQU1709732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d33a76c6f4625b434b1944e6241373cb267ca17a3b3dd8a98b3e7102bb8852c. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/GBKQU1758875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f340c58fe460565e3652ea4b180472abd90e7eacabb6141600d3a4dbe3e13e9. 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/GBKQU1769914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2de022732df096173d8def375ebe1bea7b4753d50157e70ac63b0d961b8b09. 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/GBLV62003016.
Oceans (Where Feet May Fail) - Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6cbc891f040f699e795fe2029356256b9a7df9695e04ffdda048df29543e9df. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/GBLV62003017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3828762cab317f3e1f1dbbbab5226bd0f87527e24cf30e5d7634313bafe1f54a. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBKQU2052848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd1f13beee24d9ced118df9c555a9d73363a15490d9dc53fecfd2501de9d901. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GBKQU2052849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2355c9f646b3c8606129e1040d6d05d7b4f714261e9da9b1e6feb4eb14b784fa. 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/GBKQU2095296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e96011849fe0998148827942ed0cbd12db06ea5efcd60608a135218439b8d7. 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/GBKQU2095301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9bc870d8b7a5de305b2195c28494a91d7af57873dd45f339fe6886ea2c28d0. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBKQU2027648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabaac9dd3c4af8c77ed9123e4c18d837ebf12c824291a6f62bbaf6aae95312bc. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/GBKQU1986494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffdd6e9135be10714cc44852506665239b6a2faf2e7b46eb21b1bd95fd3232a4. 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/QMF921550168.
Medicine (Tritonia 487) [Tritonal Throwback]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf451734d665a7bacf9263a817a783fc757296a003c88942ea2870f7c70b5f306. 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/GBKQU2478401.
ASOT 914 - A State Of Trance Episode 914
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c961524f55b98f4ba2a9a0336e0182bb3347c89106e731ccfbfa3ba11778f3f. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/NLF711905093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ae2d120e0d8f8b0e6db985638a78c38e322525fc57b8d5f69c169733da8d04. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/GBKQU2410515.