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 0xfe3df0668de55e56e5bb0b542fa7e5c8707377b29cc97f93da32ddaf38d07fb1. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2489d6ff-24de-41e5-a75f-f4acfe0dc0ca.json and https://artists.proofprofile.net/proofs/artist/2489d6ff-24de-41e5-a75f-f4acfe0dc0ca.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
När mullret dövar våra öron blir vi rädda
Stackars lilla värsting (D. Lissvik 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 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 0xc52b17cfc0c264f880659b41ef0204f56a587a0ad867be36d611c32b3fd37020. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/DEZN23000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1d5c5b72db1ee8140742d1dd49f666467f34d6f85995f3e6c3902fdcc33239. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DEZN23000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7b3a82300cca2e7c436b903fe0e0f9a157280a1a9bdbb0420ff1f9ad017868. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEZN23000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde089350c1ada1ffbf6e1ca3c4c6d08cd2f06d529390c760b56323e10ebece99. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/DEZN23000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ce7c0931ece50b3597af477736b79c6637c8136bab4e6cb17aec2015987de0. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/DEZN23000022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ffbd3cfaf5166b79b6375dee5d94872505df22a7f3a2ab1275c4382c03ec617. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/DEZN23000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02243aaf2bacf8a24e1a09c6eb471bc0add10ee37e84b03058829cfea3259388. 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/DEZN23000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25212e9359d2de9f0e8880538de0ebea67c59147d1a53c0f392224c0c3c948f. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/DEZN23000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d967b512c0a1f137dd3c7c07f357f76edef43509a87ba385c591ab9cb43049d. 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/SE3OW1301074.