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 0x62be8252cb9d0a05e83bd332224d3f3f9bae043ed0473be0ca3cddf0221f2719. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/043e5fb4-80e7-4c5c-b3ac-b8002e2fef5f.json and https://artists.proofprofile.net/proofs/artist/043e5fb4-80e7-4c5c-b3ac-b8002e2fef5f.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 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 0x043349a202a76e06009a12a661ab9bef882ee6dcb9c1417732717c62f6a6fe62. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZZ7Q2413245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1abab691e23769c12a4ff1a40b459242b362e6b9f81bc734f53e58e4a95787e9. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QZFYZ2533587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5c191b7708b7a7a94cd19f2158a52baff81245ef08b6588f1cefbb888e4e04. 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/QZFZ32515016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c7ab5584ae08ea5c0a0fb436d12e1e8dd9f558aca9dcbbd9587a289303ba2e. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/QZFZ62568909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d9ead6e2ef503e92deeddd48cb11529bd28918671464201c923a76f18cec29. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZDA42532348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9bd7ebba50e5f817c9b74a1c2139c482231c3227e4dc4d4067404b5911b095. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZDA62588334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7303528832b57abe543096b8d484e35968c7bac272e654c2e6be8bd2700530de. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZDA72596460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4a259622a4f691d057587b615db31a1f7b4df64da9aa1b5c29f162e7c50341. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZDA82548323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a023af42cb07cf6a834162fc4d0eca223f8a0e22488caa36822a9eeb3efeebb. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZES62552317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89b8e258a9e2adc5d6e7ac9e7725714c6149ab4cc607839a3f1baf4a8b932575. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZES72592678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72358f91efbec5012e8b2951038feb03c8e14c4452516c8b5bba9189e23f599. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZES82512643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7925d910fe53590dd8de2f9a61720c98dfffb17252cbc3e8988f93964d3e5478. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZES92545745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b819d7cd0232e03059e3133122b801ebb413702ab471cc49aa0857410e845c. 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/QZHN52561152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d63bd354ccd29818beb27b122b69584c2ee035d60b3eb8b0f8d1cacf5fc1c03. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZHNB2510716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8dae08840022ca56f99121bb1baa193a5ef8e24459de53c0e266f6c17c08f99. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZK6G2540861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6857bea34d1f810192b3447bfa288e7cbb5a0b0ab83192e8c2283ebf528e22. 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/QZK6G2549715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62911279a9527ff554cc9368db8cf46537b1e666a37f41356574563ba6b7e378. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZMEM2575960.
Jag Trodde Änglarna Fanns (Ole Ivars Cover)