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 0x6a9a1103bc79f4899884cc0235b4f9a513e328214d9d913e60225a035434186c. Chain 2 (Bitcoin): anchored in block 953618 (2026-06-14T09:16:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1c98ba8d-6b8a-400b-ac20-595ece339576.json and https://artists.proofprofile.net/proofs/artist/1c98ba8d-6b8a-400b-ac20-595ece339576.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Napoléon : La marche héroïque du Bicentenaire
Le Pas Redoublé de la Garde Impériale - Marche Militaire Napoléonienne
Napoléon – Chansons et Marches Militaires Napoléoniennes
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 0x7deda6a06dd5e6ff0de2b1e3a3d7631ea12c9d44f92e193e341216ebb0935cba. 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/QM6N21464357.
Marche d'Austerlitz - Marche Militaire Napoléonienne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb6734d852099237152078ebfe9a68dc0903f92b178aa68d2b390d944a704d7. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QM6N21464358.
La Victoire est à nous - Marche Militaire Napoléonienne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb972aebf00825bf2c1d1a4226c66e9dbf0a5ad37bb45e845de28a6308cc9300a. 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/QM6N21464359.
Pas de charge des Grenadiers - Marche Militaire Napoléonienne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d9b34496637269c46ae21cf4de2a7025933bb59b6da445318ef7055653097c. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QM6N21464364.
Le Drapeau d'Austerlitz - Marche Militaire Napoléonienne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4185e7dc456e992838f3d35e6bb13db169dbee4407ff7c1b1497f96ad5ded51f. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/QM6N21464367.
A l’Étendard - Marche Militaire Napoléonienne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ed208a6f28aa9b192dc7512344c1c91598af281b8d516bf557824247a95f91. 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/QM6N21464368.
Le Réveil du Bivouac - Marche Militaire Napoléonienne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8f83b80e7b16b21298bcee087234f40146704aee2b50a130516a91c63b8bfd. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:20:11Z), 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/QM6N21464360.
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
Le Rigodon d'Honneur - Marche Militaire Napoléonienne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f9ceb7b4666a4c2f9d0f75742f9ef663db0e25b425d215692002ee05f3be89. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QM6N21464362.
Le Champ d'Honneur - Marche Militaire Napoléonienne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb4ff8fbcf128dee0aaaabc673e4c9f52f71a1dad98e41d538e7c6e322ab0ab. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QM6N21464365.
Les Retraites Françaises - Marche Militaire Napoléonienne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24454b21a05caf87e1e842ea7612f4082d32f68f8d35b0f849414a6d1b973f02. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/QM6N21464369.
La Marche des Traînards - Marche Militaire Napoléonienne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b0ceea7f64f580ba548c679f216109cddb979cc1f7c7682f13fb3e10134ad1. 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/QM6N21464370.