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 0x0119f5ae2e9184aa738b356c0723f15601bd33274c9e346a4e4bcfb03d6b2137. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0dfe8b21-74da-440d-9e25-9ac45e8341ba.json and https://artists.proofprofile.net/proofs/artist/0dfe8b21-74da-440d-9e25-9ac45e8341ba.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Die Zauberorgel (Arr. K. Hacker): Lied des Bauers
Unterhaltungorchester des Schweizer Radios
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 0x83dc0002b797bde494e466c23d476d62a5b0989936a504c4f02065598426a6ee. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CH0040601330.
Die Zauberorgel (Arr. K. Hacker): Vogelscheuche
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11475040ba10646ace7df6311157353afc1e1f5481c6074a8389804f14bcf736. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CH0040601350.
Die Zauberorgel (Arr. K. Hacker): Ouverture
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486d46be02be34a3c53ff90023c5c53d67499ec4c7b8a839257300ce0180b155. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/CH0040601290.
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
Die Zauberorgel (Arr. K. Hacker): Fridolins Chubelimaa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1397519d375d9761736799f266f5191ee37a464a87190221558fc71dff56a4ce. Chain 2 (Bitcoin): anchored in block 960161 (2026-07-29T22:51:26Z), 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/CH0040601300.
Die Zauberorgel (Arr. K. Hacker): Judihuii, wann mir de Chlutter hand
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3995be45e21fd6df4e7d40c3cb78b33e8cc512b4e1ff886b929d66ac686059. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/CH0040601310.
Die Zauberorgel (Arr. K. Hacker): Lied von der Zauberorgel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9487bf9781dfa5f36c53631c478e79d45ccab2f49f9fc492ae2d3e4a57018d93. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/CH0040601320.
Die Zauberorgel (Arr. K. Hacker): Chor der Landleute
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737e1a7d7ec7e7eb202f2981ff737dd0f0b03f54ce1fbe19436b9c156a4c84ba. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/CH0040601340.
Die Zauberorgel (Arr. K. Hacker): Schneemaa! Schneemaa!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d4b8cc88fa01ec381ea398c5cbc157155b8f61a6d94f1c7cf022d5ae2947a9. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/CH0040601360.
Die Zauberorgel (Arr. K. Hacker): Klagelied des Konigs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3648e810e50553d885bc8210a04d1f53226cf8b06b1b2fecac731b8b91ed9372. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/CH0040601370.
Die Zauberorgel (Arr. K. Hacker): Doktoren
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10726eba8b4c2e36e66a359867f08e5e11544b17ab8b5847be0d58da1a4fbdf3. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/CH0040601380.
Die Zauberorgel (Arr. K. Hacker): Wie schon, wann Frund hasch!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e1cd90a1ba5ba2bfff5f0539400c51203c98ed18ff37d9d0fd9b2983e6f7a4. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/CH0040601390.
Die Zauberorgel (Arr. K. Hacker): Zauberorgel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc97bf8d82c808b55f52c69db957a3f9e647de20f46477e782344570a37cdcf. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/CH0040601400.
Die Zauberorgel (Arr. K. Hacker): Finale
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee665718454f320b32bb9a7f0362810dc6498bf9f1f284686bcb302d431bfba4. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/CH0040601410.