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 0xe7613d8eeb088508bba32b6608474740976bc3dd3ac4836cc7298e91b6450527. 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/e755ea91-6ec3-4384-8343-bb61ed396afb.json and https://artists.proofprofile.net/proofs/artist/e755ea91-6ec3-4384-8343-bb61ed396afb.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 0x3d0b782dab18e66109ee594f127d91f60eafcd788f35239d839c85eb5793d5c9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZ4JJ1942764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81dd27c8c35c14ef81f554cc5567c2287b7988fc8c3aa1a5660eeb2e8177823c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZ4JJ1942765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbfaadd5ae84a9971020bce371f925327f934bec3e02dacf6f30586a2c4b7dd3. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZ4JJ1942766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c59c40395d4ed02287e7fa56e0565e2419d2e2a301ba00db7eb1d5f98131e6. 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/QZ4JJ1942767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aaf5bc8ecfdd936162c6a70a02dca77ced31b803237f8b6f8637dcfcec28cbb. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZ4JJ1942768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283e0237dc77932976a2f7713ac7cea16196607f831a0d31df6df85d158427dc. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZ4JJ1942769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e1510ab43fb2ea7dc1a4bb7138487ee37dff4a8c2b7f5e9ecba3a587f270d4. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/QZ4JJ1942770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b6e20a346010aad0c961a68ba3d9b1917ada118d0e230e0df920dd05339b66. 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/QZ4JJ1942774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb07719072dd4b3f1fe8b899708720242f2b65f454e74e5d0407d636328a57c7. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/QZ4JJ1942776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce71e8c37f497cc0792ead8f64a6827f31b2c5141f226e7db8801911ac8eab4. 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/QZ4JJ1942777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8bde7b3351719d5188b1e3c22f6343beda1adc35626d8fa24eb47c483837e36. Chain 2 (Bitcoin): anchored in block 957720 (2026-07-12T15:26:09Z), 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/QZDA71978563.
Pidä Pääsi 24h (Kaupallisessa yhteistyössä: Liikenneturva) [feat. NikojaSanttu]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb93cab06fc67f686f99f9406a92762e83495f455f21c37fbf127f93a1e52d24. Chain 2 (Bitcoin): anchored in block 957726 (2026-07-12T16:04:28Z), 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/QZHN31993699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7cc746206f7359567341e127626c370b6d8c62bfa503718129f03762025ee29. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZFZ62055801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3958a21db07c683d2f144765a794efb0060e46f43e0431b929e8b5adf59affcd. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/QZHN32002367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7b84a68990cf5c35982af4c56265dbe3ab23535bd294331efb3de79b845999. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/QZES92153622.