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 0x1a59b7ee74e8865c658ed582b701a693aea9afcf51a387d59463191ccdc07d9d. Chain 2 (Bitcoin): anchored in block 953694 (2026-06-14T21:38:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/70938906-a175-41dc-a720-d04bc090ef9d.json and https://artists.proofprofile.net/proofs/artist/70938906-a175-41dc-a720-d04bc090ef9d.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 0xc06d1a60777182e5ef5849175a854968763e4794da9ca99ab90def0c14e56869. 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/US83Z2343792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b98c0f827d39f5a3b8cf56b0ce95c107ca15ccc2938e349ff8eba3c49ac423. 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/DEU672400119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8187c49237b81b7b3738647a67f0ed72c1836c7f1bde1d10606f23cf3ad8cf3e. 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/US83Z2479144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e77be5933cc4491759c050c9e7c0499b78e22aa7c8eeaf8d5ade9b89f23d8ca. 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/ITZN72300222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4387753c9c85fc1746eb70327090bd1e74d36a5950a3c1498c5bdfbeffafb367. 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/ITZN72300223.
Sublime Sunset (Nick Schwenderling Remix)
Sublime Sunset - Nick Schwenderling Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4cf94821f3a6872a31983983ace0cb12f187a8e2df76d6da30442cf485ff3d8. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEU672400993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa6adc29886cb54ba843eb0fbf5ed28d85533d08448b56797555b10da6e7ed8. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/ITZN72400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59106701307e4406986f77844e459f590863f41b958cf1eab197d870337c45b2. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZG2X2420859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655013162b4e37d6d9026e02d7e6c65a15ffbf1a4ee25eefc525e753253b75a5. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZG2X2420860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267802c857205675f079af15a0a55c391bd4c637cdc81d8ddb9c554130180d58. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/UKR6V2540896.
Philomena - Nihil Young's Chronicles Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4a258c570d31b1dd250ede74da6918f154c0647d4c92bb460a792793994a3b. 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/US83Z2353169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b337169455b035e45292afe5d48743bb06c511da2c6368ba5f411d08abe7439. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/US83Z2353170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7619bce0a5efc11228a264144c95b74d056104c4c29c974813cc4485dd4bf9. 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/US83Z2353168.