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 0x63e1e0bc1a55ef1f3be91571eb31c60f6b6d5417a9dde5fed8269046457d7465. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/61b54f40-5a13-4154-b07f-81e0ef80fc3c.json and https://artists.proofprofile.net/proofs/artist/61b54f40-5a13-4154-b07f-81e0ef80fc3c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Then Svenska Messan, HRV 404: Ära vare Gud i högden
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 0xec886f9b35fcc7f32cadee143d1e938eefab2e4679865d5ea4cccc2e95b01384. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE3QR2100302.
Then Svenska Messan, HRV 404: Och frid på jordene
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a48d4939c2776373b64cd1cedda4e8dc97edc07d39f037ad207b97fc344a6c8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE3QR2100303.
Then Svenska Messan, HRV 404: Vi tacke tig
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf126f53be3abacdc7369a8a5990f2f044d576c603bc958e804783047db93033. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE3QR2100305.
Then Svenska Messan, HRV 404: Tu som sitter på Fadrens högra hand
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9bee1e80eb96d0181fba42cbe10c438dc188da6990ad70e10bd5804bcfda280. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE3QR2100310.
Then Svenska Messan, HRV 404: Tu som borttager verldenes synder
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b001e7d0707a0d6d1e392e0870c8fc0e74b3179cf698c942011f076aeed07b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE3QR2100311.