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 0x06ee0c7ed2c0d495a9d6ea1de4c01d5fb04d6f155d379bd8f85ebd34b6c182d6. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0b19d67c-8a00-4c80-9c59-c5e876f79610.json and https://artists.proofprofile.net/proofs/artist/0b19d67c-8a00-4c80-9c59-c5e876f79610.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Martinů: Bouquet of Flowers - Novák: Philharmonic Dances
Janáček: Glagolitic Mass, The Eternal Gospel
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 0x92ecf2397762cd0e3bbb1d2d473901dad20e735065a30a5cc0b1a15dd1ee5dd7. 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/DEN961800320.
Non ti scordar di me (Arr. for Soprano, Tenor and Orchestra by Giancarlo Chiaramello)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f7a60ef7cbc55bf1d7847a9797e9f472235838653238376947ed0a86d5c1d5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEN961800310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92f257da19becda39ffc31f1f6c0a2d2411ea7bc9f290cbebdb7a45a8019072. 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/DEN961800340.
Orchestra dell'Accademia Nazionale di Santa Cecilia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081d9e1b75d2199aa21fd15a7081747fe5f9f5d07f20be1217ce5d5777745cc2. 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/DEN961501950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7498ee4582ede8f1c9d6878a004927c5375fafc354ff35ef3254cd5b7a825c71. 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/DEN961501900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058767e2fa119eb3b440f795aad3c652a84426f2e7192dce8f2285a51dfdb565. 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/DEN961501890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb1ff64ad4b732e94791295396b6fd5db97850cb8a488b1084f3578b5d4e969. 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/DEN960730311.
12 Songs, Op. 21: 7. Zdes′ khorosho (Arr. by Michael Rot)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5817c745fb22b5ac369d21c8d2a17397fa646bdefd9a9bc2432798d05bae112e. 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/DEN960630902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd200dc80cea5d9cfa053b6af970522e74240820738ad57a8e88e4946f80e2c0e. 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/DEN961700290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3354320c921f9084395bd5d194831b50e031fe0d312f67a1b828f7a5702c213e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEN960800320.
Lakmé: Viens, Mallika, ... Dôme épais (Flower Duet) - Excerpt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ded58f74d2a481619d9a51c5d27aa0a389796678da3caab6ad9cbd4870f5a2. 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/DEN960730815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db1855457f830d103133174cb7d46a67aeb0960309f79dafa24e9d3d1b7c02b. 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/DEN960730816.
Les Contes d'Hoffmann: Barcarolle - Excerpt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3469182194c9dd52fb4a55aa916d511332be8bd82bedb685f6a7d23fdd17c3ed. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEN960800301.
Stravinsky, Janáček, Bartók: Village Stories
Martinů: What Men Live By, Symphony No. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f0f8e3e5f19c4d0ef8caf8cdfe7600fcf45011ad610192d2ddfa41d4bee10a. 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/CZB871802001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec113d6c97a1921c3f0c939175d77b3b843c01c2c4b1da54167c857d4cc0a42. 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/CZB871802003.
Gianni Schicchi, SC 88: O mio babbino caro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc988ad52833a92382916f2146576abd3e0cc1198e5dc5c5e935b79f88ea9ced8. 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/DEN960400190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba1db43035e5b17c1379381d116dcad068e6687f714c6b248627fe654cdba1c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEN960300061.
Lakmé / Act 1: Viens, Mallika, ... Dôme épais (Flower Duet) - Excerpt
Rusalka, Op. 114, B.203 / Act 1: Mesicku na nebi hlubokém
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8138992821835557d071cac7c1115a94a09e82637860560c6ae1fc263b45835f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEN960300069.
La traviata / Act I: "Libiamo ne'lieti calici"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ad03b30223b850ae826376f3fd49c88419a340930f06263a38f6de3b408358. 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/DEN960531303.
La Bohème / Act 1: "Sì. Mi chiamano Mimì" - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0647d431b6cdffad2b8ecd2cf8b1e4d1039beb77fcd3fbab4d5d0bca98a0d5ea. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DEN960730309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb1ff64ad4b732e94791295396b6fd5db97850cb8a488b1084f3578b5d4e969. 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/DEN960730311.
Les Contes d'Hoffmann / Act 2: Barcarolle - Excerpt
I Capuleti e i Montecchi, Act I: Oh! quante volte - Bonus Track
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dcf9cec17610d142b3951bb38427963070c005e89b1af79538df4ccd1938547. 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/DEN960400231.