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 0x30a8c6e2d624f9f8e8471faf59bd5a8eb786e7cf0de9d6723330bfab2e713fdb. 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/5d952fcb-7dc1-44bf-ae05-45e1d3137ff4.json and https://artists.proofprofile.net/proofs/artist/5d952fcb-7dc1-44bf-ae05-45e1d3137ff4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Den Lille Traktoren Gråtass - Jakten På Mirakelvannet (2cd)
Den Lille Traktoren Gråtass - Jakten På Mirakelvannet
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 0x94f1ee748d4086c230922527c4e04eab06a84d04079b4839172842360487c6d0. 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/NOHMA0688010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df82da87a40cbab872312691184035a9d928cc62a97f94d02c263f0dc23386e. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/NOHMA0688020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b737cdc421960078161c70554f92e6ccc0d75c7217a8ff1c08f7d717071e28. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/NOHMA0688030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f1cef0283fa4e0631eabe9d7bc3b968f531584885b760c748cc7bb90417bbf. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/NOHMA0688040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f2bb1eb19f648223acb03bf701603dd1ab7b9b82165322104ee921fc37bd75. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NOHMA0688050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9405f4881efae02e7c1daac6826e39b6c7d8159557d3e7a6d78c6f950c46efb8. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/NOHMA0688060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40353f7ae4e9846a32ad1ed595cf94e6db3dd6da2db111ce1839add86c82f8d. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/NOHMA0688070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6a181e216798b8e943a1290bc43ed8b8a9bb544de3c524c837e3a238b510b3. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NOHMA0688090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2336609615a909ae948229fb3147192f8e8d287e9a5870f412a8a951e2ae1cbf. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/NOHMA0688110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f2ba53b8a84b259f1e8304f95a1c51c5adac75ec10c02dafd093b3451b320b. Chain 2 (Bitcoin): anchored in block 958676 (2026-07-19T05:43:13Z), 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/NOHMA0688130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484e7edc0977ebcfd09a814cc15e3a80fe518b99abdb9b914ae62be45a121b5b. 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/NOHMA0688140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8c8ef5e396a9b819a4785e0176bdd4b7cd1a5197fb3b35c077210a2c665eb9. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/NOHMA0688160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a0a8850bf38ba0819bafc34c0735ab5a8bf2fff7485b2d0b0cf7bce70cae94. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/NOHMA0688170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768a8cc3b9099c698c0e9bed76812542299fd217193d09c00281a97eccaaa366. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/NOHMA0688220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22836d93e9c900861b69c7753d7bdaae2de860428867587a7087c87a29f99c72. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/NOHMA0688240.