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 0xb1c55690f3741cde8a26928f1cd23eddc74249dfa01288144da86b253497b529. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/588f1ab6-fb60-43ca-a37d-b3df2a85d94d.json and https://artists.proofprofile.net/proofs/artist/588f1ab6-fb60-43ca-a37d-b3df2a85d94d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rekrutenspiel Schweizer Militärmusik - Brass Band
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 0xf26da45a445386b9948bf7d5e858ad0dc2d0b8937ec8f5c37f9c3d9f19ec64a9. 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/CH0491513103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd81f9ec8e673a1c71d01dc7f94d22b070244d06ede7ae83d18c909182aac85. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/CH0491513105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7239b552cee203d6038b4a55e8bcb7da23a5b09ce6c958d26b6332a73f9e313c. 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/CH0491513108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd2b6014bf0cdc35f9186cc0623d27abc42e0ad700998c028b76139210b526c. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/CH0491513111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf936dc4f25e5ec8287be37ef783e1793f421f572b56837e3f9220cb3d427d1. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CH0491513112.
Schweizer Märsche: Marches Suisses: Marce Svizzere, Vol. 7
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e44844c80468065eeaa2a7d438dbd2f36807931cc0db2444cec6f6083ba9629. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/CH0491814610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13fd8436353b1888652f5010d3cd66a3853b216b4facf0964324f07be1fcc4a2. 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/DEAR42085843.
4 Lyriske Stykker (Aagaard-Nilsen) II. Movement
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c70eb8183325c5fd80e575ab217f07a82cb5bfebd2c26ecab70d830837c718. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEAR42037707.
4 Lyriske Stykker (Aagaard-Nilsen) III. Movement
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cb90c02058ef4d9c970588bfaa67809b7dcaf4382a017fb3c343865d50d1a7. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEAR42045881.
Blue Lake Fantasies (Gillingham) I. Firefly
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d18b771e2813217c8c6fb2daad27e3891a9805c6506ce1adbf33a95a10d1df7. 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/DEAR42058754.
Blue Lake Fantasies (Gillingham) II. Moonlight across the Water
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f14edff144a425fda19031bdcd95d0812c1301b31c45cce032f2e0c47c822fb. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/DEAR42078136.
Blue Lake Fantasies (Gillingham) III. All that Jazz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4d60d0aad12b292733bc0a72d8b9b439f5f2cad8f5ed5f18399014135dda2c. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEAR42091370.
Blue Lake Fantasies (Gillingham) V. Party-Antics
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1502fe6f63a4d804775eff8838d0690f8bd99234aec2a53fe114f7481d8cde. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEAR42051111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a5c4395252701cbc50848b9f11efe97fcb6b023ce79a40756d8c5d31cfc017. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEAR42055431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8067d749db069b79bd8dda0fde90fe0a606dcfbeacb0bf40a90a81e56d63274. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEAR42058677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e28a7d27cc919d328fbfc511dec00d230bd29e8c0111a4b8b3a7d2effd7c53. 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/DEAR42019057.
4 Short Pieces: Meditation, H. 104 - Euphonium and Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aecb6bc3504443d1d13ac6abc595e650916aa8a4bec4bb0b9f5d26da35cde8f. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEAR41641356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335ec7a398c4262aabcc27b9aa1fb975ebd2e1833ce43a0a058b32a2761cdedf. 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/CH6540855883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5678b707fb42a62e1cd462c68c97115c23a27e9f41de6409194d7154c2e2b7d5. 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/CH6540855884.
Variations On a Rococo Theme, Op. 33: Thema. Moderato quasi andante.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9261adbcb09185aac8a214f330a9e0092551521a706d42fd4d63d8f9f1e34a83. 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/CH6540855885.
Variations On a Rococo Theme, Op. 33: Variatione 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a195f62ecad80ebab370bc3f33cc15a265de3ec897b0af0b7ad8eb5635ca98. 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/CH6540855886.
Variations On a Rococo Theme, Op. 33: Variatione 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8532f383211250fb30b0349cf12842b015360cc2552f54be4b50b53a539ffd6e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH6540855888.
Variations On a Rococo Theme, Op. 33: Variatione 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b9a502f3a24ae09a41c39e4d8d006c3c2e890fff7953167770b52f15f6f679. 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/CH6540855889.
Variations On a Rococo Theme, Op. 33: Variatione 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8a0b40a193554978d249edbae17f3e1c8fc1d45166345e363f91cf8fb83874. 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/CH6540855890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c965d8cfb123e5fa49521c3ae90bee03e9e9216d992a9ffbdd12e7eca2637a. 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/CH6540855894.
Prima SonatRina (For Euphonium and Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c74c0c9d6d6399d4159c689d1cd38df9c6f217276cc0c3af12e57c176a485db. 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/CH6540891600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5a7cabe890ac235765e31b5b0a060ea2addf2ebb6e73c5dccc983cb13aea72. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/CH6540891602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc6686ac400242dda8d016192e8594746779805fda8ff32eefb8c13b1982ccb. 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/CH6540891606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f9b25aeb304c67eb1b5c32a8349142a90f0cf0683c7374bc23e0d72ce335ab. 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/CH6540891546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55ccc3ba9d4abfb80fc15cd55b6948796d09dcc32194735728b08298d49898d. 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/CH6540891547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8033157ba528262ed42e656e0334078d9d720fb63afbb1a781be9e1548803c31. 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/CH6540891550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6a5708fbec597ad76ad794b67ad244b48ccd10666d2b4976af9e03082d2eb1. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/CH6541621113.
1999 WASBE San Luis Obispo, California: Sinfonisches Blasorchester Bern
12 Songs, Op. 33: II. Varen (Arr. for Brass Ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f8fffb34e61ced3e2dd6d6531597cd944767a3647359b228aa36713b0d798f. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBLWD9210006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61a66ec3f029c7f0dd69c5ccb825df796ae9ef419dd09c17e2342e1f946b700. 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/GBLWD9210013.