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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e7131d73affa6052c864c8631dc8d91e2899d086ab10f0e84ab11ead45a242. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/43f3124c-6b30-4341-9c4d-164710c2e331.json and https://artists.proofprofile.net/proofs/artist/43f3124c-6b30-4341-9c4d-164710c2e331.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ce87e126ff294f72426c6a6d057117a4db555a4ed91591340534be825538db. 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/UKF2D1900041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23bd3be5d4baa0c5b97fc644f248f496800c0ef140882217d6b1169e85c60a72. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/UKF2D1900042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa22219f2c3cefd0113eb4ad0a074e55cb0b3a457e7559b41b19ff783b40711. 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/UKF2D1900043.
Billy Preston/Spiral - Live at the Crypt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844c71d2c89eda0b3a8386614d197ef42420cbad7d9940bd1daddc41b0d95729. 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/UKF2D1900044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f3a2f1aa0e4a32f5f19862c46395b145cedd1beb189e90209951efb43a1227. 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/UKF2D1900037.
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 0x0544086b3d9a9df4b4c8649103bb22401e8fce9ec65667b12b749e45a32479f0. 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/UKF2D1900038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5931d0b1e438e0e739a8234c6a4b36d4893ff81e55bad5ac8735c7664412ffd. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/UKF2D1900039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5aff30345cdbd341c2e8d7510bc937eccbd7ffe9068ada97d4e0360c091c34. 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/UKF2D1900040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ff91cdacfbbcdaf2b329caa2ffef7765aeea7381c72c06f6780723b7a997c6. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/UKF2D1900045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd13bdb737c608152d5af1bc70965410666663f4533dbfd7f06df09774008577. 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/UKF2D1900047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b8134fcdb1d48c6a8425141d48d747dc0a2214b29b882aa5de002b42ba7392. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/UKF2D1900048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbf75ce29dc210d11fdd316e10881c9e0d9dac4e0363f3c4f8c2929e352ebaf. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:48:15Z), 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/GBMEF2101540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49f8fb44553372a0fa0b2e1a7d85aaeacf6607274ac257eb76ac76112fe0e75. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/GBMEF2502634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3e02de4aaced3dfd07ac25c85b23e47cb8d0b95fa1df318cd88c0b570bf958. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/GBMEF2502637.
Miles Chases New Voodoo In The Church - Single Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1af22912935845eff0c225c9601afbda6b782c3c67314aa969070e4ad1d092. 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/USC4R2228266.
Miles Chases New Voodoo In The Church [Feat. Benji B, Raven Bush, Theon Cross, Nubya Garcia, Tom Herbert, Shabaka Hutchings, Nikolaj Torp Larsen, Dave Okumu, Nick Ramm, Dan See, Tom Skinner,
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1af22912935845eff0c225c9601afbda6b782c3c67314aa969070e4ad1d092. 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/USC4R2228266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1af22912935845eff0c225c9601afbda6b782c3c67314aa969070e4ad1d092. 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/USC4R2228266.
London Brew [Feat. Benji B, Raven Bush, Theon Cross, Nubya Garcia, Tom Herbert, Shabaka Hutchings, Nikolaj Torp Larsen, Dave Okumu, Nick Ramm, Dan See, Tom Skinner, Martin Terefe]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f915a8e1c0563a470ff6da7b761d5ba093685b816b66e895bc03ba6866ff25. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:47:21Z), 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/USC4R2220847.
London Brew Pt 2. - Trainlines [Feat. Benji B, Raven Bush, Theon Cross, Nubya Garcia, Tom Herbert, Shabaka Hutchings, Nikolaj Torp Larsen, Dave Okumu, Nick Ramm, Dan See, Tom Skinner, Martin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1204a659ae24c432c675ae90d859463b3a781e5bd334b85c98b260bd2caddee1. 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/USC4R2220848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36343785607e23d6a8ae87767088a96afaf123ca1bb493185f223fbe8dfbe227. 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/USC4R2220849.