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 0xedfae5711dd76efd9cfdc14aad5121e55e5e67dfdc3729960eac22e1f9580a1d. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f3e4a48c-aec6-44de-835e-4db5ff91d202.json and https://artists.proofprofile.net/proofs/artist/f3e4a48c-aec6-44de-835e-4db5ff91d202.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 0xee30fe27f539c7af2609b07b9a1b7af486ae3d6758cdb49de5eae7e8d6d96aeb. 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/UKN6K2000828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b929c7ed472ee6d88bea3c9ed2e692844e956a578dff065ce9639c8ce450fe. 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/UKN6K2000834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76266c0c6ffb322892df94477802ef92a86c224256fe05ff2ed6018344a5312. 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/UKN6K2000835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f16cb66415e32791f4130e5468eea367fc7981dcb189aad7effed694385660f. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBKQU2173939.
The Revelation (Fiesta Soundsystem Remix) [Edit]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb899ccec86b582aac1cb52843017f77899e65ed943b197663e248f13e9e930. 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/GBKQU2106705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb06d23aaf0b4540107153f6f0a84a38ccea61465bc369355ae621ca1de16a79. 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/GB8KE2051130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241c154d7137b19d14df5c56c9d62bb79a2f1121af4baa23127ea5d3e24455cf. 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/GB8KE2052028.
You See How It Spreads Out Like A Fungus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b46ccd7df26c556998ff09bb478b38660e2800c6787d72bc88f79deccd65a49. 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/GB8KE2052949.
Abyss Watcher - Drumterror & B:Thorough Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f54bcd9e59a920cd5ad359d1aca29432053e517801c8ba073cd12efd43d124. 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/GB8KE2056361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f05d8413f6b43e895a53b782de2cb9713f5cda07b7bb5ff54c82007cdbc457. 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/GB8KE2056362.
You See How It Spreads Out Like A Fungus - Fiesta Soundsystem Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1fa7c8fea504aedee1aeee52161a828b67a82031d2761b65e4d2e817644a19e. 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/GB8KE2056363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0585bee16281505a05c32f55281ae25f52bd990ed5dd62919d61f4e341f71bce. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/NLCK42400813.
Titties - FAFF fisting our way to heaven Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec08fa225c592ebd56c41205b25172f0be5a4a1ef0e39f192a2e7fe4924b9970. 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/NLZ8C2200314.