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 0xa0b72f48b6a0b687a37f327ce059aa3d741d73e90ab950d196f0819b3e1fe259. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e3b48097-b435-483f-8853-bcd1fd716c2b.json and https://artists.proofprofile.net/proofs/artist/e3b48097-b435-483f-8853-bcd1fd716c2b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Spitzenreiter der Schweizer Volksmusik (Immer gewünscht und gern gehört)
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 0xf8730dc5fc38f215c9bf0f28d62a70b3b449b6af3b6062c3ec675dca13a1d116. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CH0688600714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9acc18d11319ee4ec2c7ce4cc759f73eb57f36a60adf0cb1c1688aefb22ac59. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/CH0688801290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47526a3d28945add3beed6f3ef31e08fe2ef38fe3292abf736b26c47d82e9bbb. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/CH0688300069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6269f1f02976416a06d00885b0095adb1e25a1f27e422b42ed7d8d93afb6657f. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/CH0688801018.
Im Rössli z'Steihuse - Kapelle René Wicky
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185003ebf2824c800c7a2fe47731fab0541c42dd8e3d7630e8c2ecacb09d65ec. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/CH0688800265.
En urchige Muotathaler - Ländlertrio rené wicky
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344bb24e8f4f1dd87b7012c07a9bd5668b65c27515f487541c9802b9bdf6662e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH0688801030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd050a4755808b45188c94bb1629276a9b3a715a75d47563895713b231f6437f8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH0688801015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b05ef92a8ed7aaf4326d45e2a74fa21a0d360dfe717aaf7b5a9ad9dd699ad7. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/CH0688801293.