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 0x8e95414cb5c0892487727e4525f26c53a2dcd740c488fc82a006ba05a773cd71. 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/fd444e92-b2a9-4def-bf5c-2f2c4e2ef555.json and https://artists.proofprofile.net/proofs/artist/fd444e92-b2a9-4def-bf5c-2f2c4e2ef555.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hoemoes Dà Òk Alweer? (Slagerij Janssen Remix)
Hoemoes Dà Òk Alweer? - Slagerij Janssen Remix
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 0x0e4b43e3e87d390cf96ce9d80e47ec7c42b9ea93cb56d911ef768f407fadbc7b. Chain 2 (Bitcoin): anchored in block 957640 (2026-07-12T02:27:45Z), 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/NLW5M2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02e0dbb09d783620b096048f90c1a59cfd9fd93f5cdff9045ad16c25321c8e5. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/NLW5M2100002.
Omdat Ik Een Ray-Ban! (Hertstyle Reemix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0d074a573608c8f0398b565696f15916b58dd32628f54563d8cdb2abc57488. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:53:04Z), 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/NLW5M2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247303704cbf9d1b148c58cf0181e54c715cdfb65fe5ec483e3c7dcb75055ad8. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/NLW5M2200002.
Zoveel Cactussen! (Slagerij Janssen Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3addec9733e4f7acfba1ac1cdd3ff4d70f8fb6f19750b6717a97dba086ea75. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/NLW5M2300016.
Snor! (feat. ALAAFTERPARTY) [Slagerij Janssen Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0991da5b91c116829a1c68128b8c6c01a8e036cfd0b6bbca1bc3ad40a7921a. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/NLW5M2500058.