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 0x985ceb1e1b83f9c734b4efdb6a43b403098a0a6cbbdc182962537d4a9995be41. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a094f629-06c6-4a9a-b661-818032afcd23.json and https://artists.proofprofile.net/proofs/artist/a094f629-06c6-4a9a-b661-818032afcd23.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d99f14b1f37b82269347bef74b192a53994a1321bf34b43828a53303a3f6e0. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/SEYOK2211126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaebedb5bef8a4a32bb1f2a23c27abcf0503499e6f34c4cad3f57fa635fc99d5. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/SEYOK2335363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3976f435f170af72ed1926a003ac07f72d2cf8b31976a872f3d4ac4e0c98a7b6. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:40:57Z), 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/SEYOK2412703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb25a7c406c4b4c4f6773e5812e0fde5c07a32f3182b0f91c155a7b4e30f2f6. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/SEYOK2430607.
Kaffe och björkar - Historien om Griskillen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf74c66ce1047ef43a6f9366e6dfe4358381c5516037eda121f49072436e0ea7. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/SEYOK2430615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbab9ad79dce78f51a0c63314f6307ba0ff0c463b3a7a461f3db035c8d0506c2. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/SEYOK2518858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717b1ae78c9df85be7fb58552340846f81570dc1b6e1f248fbe34f395a37cc79. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:55:47Z), 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/SEYOK2518857.