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 0xc37c6bcf87f7667af559bcedb2fd8994a58fae96cf913c0a78056c55efed321a. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eca4a17c-3b11-4994-a986-f8db75dbcf87.json and https://artists.proofprofile.net/proofs/artist/eca4a17c-3b11-4994-a986-f8db75dbcf87.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Radetzky-Marsch, Op. 228 (Arr. Gerald Wirth)
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 0x071f6197e571064327151b3dc2eb5188ee96a45f569dc74765334d11318851d4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ATUM71800123.
Matrosen-Polka, Op. 52 (Arr. Gerald Wirth)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5779c666a59c739976e911c09cb3517140009c8fb64c1f1bddf23edc4fd47ec0. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ATUM71800122.
Frühlingsstimmen, Op. 410 (Arr. Gerald Wirth)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae1249fbc3aa0bfed304d0833dccd0317cf87fa0b43224c63edf0ceafb00115. 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/ATUM71800119.
Tritsch-Tratsch-Polka, Op. 214 (Arr. Gerald Wirth)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb803638451ad133eddeb89766b001989ffe0836e9a58fb47aa2453553701c0e4. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/ATUM71800125.
Tausendundeine Nacht, Op. 346 (Arr. Theimer)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3855000f011e5651448bab41318b311c69569f03f1f3ac1b7632e844717a1314. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ATUM71800124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523e9c20705ae83fe6d173e1db8c02947528d42cbde703206e9e3ee605d37c84. 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/ATUM71800118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb7f8ea69d40c94a84cd4a64bbb779f035dba4f890df9ba82ca1f71038b66bc. 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/ATUM71800117.
An der schönen blauen Donau, Op. 314 (Arr. Gerald Wirth)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7e1d9bdf6475269ce84285bf53c13311040a5b762c1886da33cdde4da80f2a. 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/ATUM71800114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071f6197e571064327151b3dc2eb5188ee96a45f569dc74765334d11318851d4. 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/ATUM71800123.
J. Strauss II: Tritsch-Tratsch-Polka, Op.214
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb803638451ad133eddeb89766b001989ffe0836e9a58fb47aa2453553701c0e4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ATUM71800125.
Auf Ferienreisen, Op. 133 (Arr. Gerald Wirth)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6917e68f33d8d77c7b679d8b2969bd48a2d439e97bc0683c397fde60766a1c9a. 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/ATUM71800115.
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
Kaiserwalzer, Op. 437 (Arr. Gerald Wirth)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558ddb5c201f5c3bde41e4df62625db62f523779d2acc9f50977fb6b3d6902de. 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/ATUM71800113.
Banditen-Galopp, Op. 378 (Arr. Gerald Wirth)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad040750056287da23442f1f8b14ee66cdeb807544825bc3f365dbb0aa20ddc. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/ATUM71800116.
Geschichten aus dem Wienerwald, Op. 325 (Arr. Helmuth Froschauer)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c535b9661585e601bb37cd761756bf77e6484b125a71cae9907c3b2cf97214. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/ATUM71800120.
Leichtes Blut, Op. 319 (Arr. Gerald Wirth)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599cb0eda3b4bf10fd075685afd59fd0757ed6dd15f2b1105ce07f6c8170136f. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/ATUM71800121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49638d836cb683f5b65495081d86088f3e81f841f939bbccb5e2c96e3f8ae81. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/ATUM71800126.