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 0x82bace8b90b11a0574366d3fc6dff72f26323d1fe122cb6489de077585625bb2. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e1fffa21-0db5-49ef-a331-33c559332b88.json and https://artists.proofprofile.net/proofs/artist/e1fffa21-0db5-49ef-a331-33c559332b88.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Die Stadtmaus (Christopher Kirchenmaus, Folge 9)
Leise singt der Abendwind - Kuschel-Hits für Kids
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 0x9813e985dc67c1f78337c1676d69cd33df1ca01c19745915c797842844829f15. 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/DEAF49600287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8db505c1b27075b95f9ef75f4712567071c6aa6070a4cf83d08ec96f0a7823. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:02:21Z), 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/DEAF49600290.
Da staunt der Römer - Ein Musical von K.I.D.S für Kids
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a911b59dc08a2bc790ee581dcadf1da9bb14d1fc7dd07252da04cf088cbd592. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/DEAF49800084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ec410bc70c4028718c57b963f01648417a9423a14f35e6e52a1a5f77142375. 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/DEAF49800086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8fc50f1bf7c1b04ca8208bebd314cd459554d81ec297c0ec742c3fce9aa74e. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/DEAF49800088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08c12160856bf10e42e6f71721a7a9442d1575488fdf5abac56f5aa93168288. 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/DEAF49800090.
Wenn der Mond am Himmel steht - Kuschelhits - nicht nur für Kids
Die Nacht der Geschenke - Weihnachts-Musical
Johannes der Täufer - Kinder-Mini-Musical
Gute Nacht, mein Schatz - Traumhaft schöne Einschlaflieder
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffa243f4da6a947bfe90d0cd2bfefd24abef7dd4fc699da241e994b073fffb5. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/DEAF40300421.
Wir feiern Erntedank - Kinder-Mini-Musical