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 0x838cccc7795ed7e2317fd682a409b5925a42be0c20427316de6678d804324c20. 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/3e1f7c3d-7587-4681-86e0-8c4d03a85078.json and https://artists.proofprofile.net/proofs/artist/3e1f7c3d-7587-4681-86e0-8c4d03a85078.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Först ska vi äta, sen sova och sen kommer pappa
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 0x4c2cefc3d28c9121dc4e469b9f4bdfb954d6750573193f09b77f68f6d2ca366f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SE2IE1900104.
Först ska vi äta, sen sova och sen kommer pappa (Reworked 2019)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90885e602a605202df116cea4c918ece1cae2b81bc39668fc959ec4635d7a960. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/SE2IE1902103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c5a7b9dc9096f510b7317d613c8b187b8883caf0a61acf32f0aaed22c2e7e1. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/SE2IE2001201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ea97c3234680a295b209bdf9fdfd4f4de90ad730cab6e11a682ce3304ae0c6. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/SE2IE2100901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c872bbea125ff875592615bb61f9ea2060e297093ea3177c7e83170ddb1336. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SE2IE1701401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6ec6c77aa700d267bb4e61dd06a00ebedc1995279bdfecf34e3f44b7d31f0f. 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/SE2IE2200401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9e0884acf227636b8b27dcae6d6f35dd1aa6e7aa3f4127af0b5b3c565f6e3f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/SE2IE2201103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42aa65c6eb8b873657bd48676aad86095818a2832e535ff451d99442a4db56d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SE2IE2300501.