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 0x578a03923b1ec37f6dc4fdaa62dcb2c559f6b7d0258dc1c26a995303000ed0e8. Chain 2 (Bitcoin): anchored in block 953617 (2026-06-14T09:00:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1c3820a5-0308-43c7-ab72-92d898470206.json and https://artists.proofprofile.net/proofs/artist/1c3820a5-0308-43c7-ab72-92d898470206.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Chansons von Peer Raben: In zehn Sekunden ist alles vorbei (In Ten Seconds It Will Be All Over)
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 0x91e8ec5f5a9ead67b93a18755ab0ea767cda19a3b6888fe39e81ff5af765e829. 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/DELJ82079957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382e5af6cf0826010baa071ad370cad4c2e6429e76798836717aac0ab4e6ebb0. 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/DELJ82079960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25eeb85836f4f305727b3fa6e75449488fd606a59a9cc84f5c78b419626e5d54. 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/DELJ82079974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f5e793c151139407245a9a7d4a0cc10712bad849c0d3513b691f27d5a3e179. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:41:54Z), 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/DEZC62452741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfdb00f4d8dbe763b6a9ff455df35c07160ac3adcbe197bb743d8842335283b4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEZC62452742.
Ich weiß, es wird einmal ein Wunder gescheh'n
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a478026535640aebef9a7c751422a045f651b0ddf7c60fdb302cbb013723c99. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEZC62452743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a15ff95f7503fcac86892c017ca050111a989840dcb17f883a4f4405d064ad9. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEZC62452745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf157b6fa6fb8654a2f94d6ae82ee097d870bac7b06d1c4f2cdea6bd08ec85960. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:52:47Z), 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/DEZC62452746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbc7859e677ab3172fad805c0e9092c938e5cbcd17f0b675cb5da23dd970422. 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/DEZC62452749.
Die Nacht ist nicht allein zum Schlafen da
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9d3e111292802f276d1c02b2e28b2ab4fead50edbcb9253b004752b5ea817b. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:29:05Z), 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/DEZC62452753.