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 0xbf287bf8cfb21d7025473599fed86f5da439e3e5f0819854756d09045bcba44f. 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/501c6c35-56ba-4b6d-96ff-56c530515875.json and https://artists.proofprofile.net/proofs/artist/501c6c35-56ba-4b6d-96ff-56c530515875.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 0xe8b1f9faae1cefb60d4fb8aa966d0fa9178850e20427a9f25bbadfc316339970. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEGL62000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af149bdda3c051333034e305e87c8723f61ca648b07f9b1cb7e871848d7b3e1. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/DEGL62000021.
Alpine Grooves 10 (Kristallhütte) [incl. DJ Mix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f38066160fda034ebb9ff4aab364035b7efa09b6710a50ce8325b5b696e5ed8. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/NLCF71800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f0acf4eb47e4d86eafa8543959e806ac8578f86969c39cc4e9ea081519d71d. 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/DEU671900331.
Imaja's Drum - Innellea's Cosmic Consciousness
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d00681c32b9e4ed1f9c5a40f6693b0b16801c73b63ce5b59b152facaca7f7e. 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/NLC7F1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201ff3045238c736d4a3b92433443615d9b5f683b63beb0994a39f38472750d0. 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/NLC7F1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e0b8bb07b94845ff350fa35fd101134a0655505a29bd89ed779ce3b047d3ec. 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/DEEL42003008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a26208e162d02e3d2586afa6077af17f77f7cdbbbb7c3bd539e89432cfdecc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBGEY2000084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160e9ee1067d0c296ad5607654b4e267aa7c853bdc3c498571840500c5d7c5e2. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/NLC7F1800023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe5cdff8a0f7cc3772d5fed97212d24bbcca69e1fa8067bd96025d790e36bf8. 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/NLD682003278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4b4b26a66eb5c130efdddf36d3cf0c71e65c485e3604c6f171307cdd4eadfe. 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/NLC7F1800010.