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 0xc41d308c6cb2203563b5b936f4fe9daa71b3ccac6fd41b8f998b13e0a315d17f. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8dc0b4fd-7aea-4f28-83a7-08566d1fb1aa.json and https://artists.proofprofile.net/proofs/artist/8dc0b4fd-7aea-4f28-83a7-08566d1fb1aa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
La forza del destino (arr. M.L. Lake for wind ensemble)
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 0xce3926522db16e3a6b02eef78dec290c550eed6dbcb6220214f029f7d23946da. 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/USA5R1430307.
Candide: Overture (arr. C. Grundman for wind ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b9a0be21d72d282ac22c6994670c5893d7429507bb75b5a0f5393fc928934a. 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/USA5R1430322.
Russian Classics: Wind Band Transcriptions
1812 Festival Overture, Op. 49 (arr. K. Singleton for wind ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b0025b523fb926bff58285b21552cc46b621081b3ba4a778c33b7633d050d9. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USA5R1399320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ccbffb1ef1d0fe916dea40d801909f12f1d0d780fd92d423124828d2860a61. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/NOCJB1800702.
Variazioni Sinfoniche su "Non Poto Resposare"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4215045c0bc2612a7f499bb43f5f6af6fd8f0f45e267a1dc2dc2f2f17545c87a. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/NOCJB1800703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce648a219f514331f9c639f077bcf85952745e1c01a66b1a89fc1bffb5ecd3c. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/NOCJB1800709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cde773e1ebdecdec92de100a05668aee61bb6ba14770775a374b72c8b7981c0. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/NOCJB1800713.
Samson et Dalila, Op. 47: Danse Bacchanale (arr. L. Steiger)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26403a660d225d0e0cc666411c5cf5c996dbc01f66650c8f69ba055e3d63ebf1. 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/USB8U1500198.
Respighi: Pines of Rome - Fountains of Rome - Roman Festivals
2012 Midwest Clinic: The United States Air Force Band
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdfaa308bf438288ec53059645019fd84d469baf8943c44a9ca2513f4698ed25. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/USVZX1326706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9906b8e9748c1a5acc751250f44910471f35262a1eb9670423d0a2597c4ebe3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USVZX1326707.
2004 Texas Music Educators Association (TMEA): All-State 5A Symphonic Band, All-State 5A Concert Band & All-State 4A Symphonic Band
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4179d6acdee9f29eb794e5f0db73fc19170e8dec47ea7c11ea846043c246892c. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USVZX1315217.
La belle Helene: Overture (arr. L. Odom)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9b57902a746b87cd48265651daed3d5846959e8347e5636026ac94ac817afb. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/USVZX1103502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a7799606903b095951147397563af8b225989a4631f139d3b852fa2c202833. 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/USVZX1103505.
Festive Overture, Op. 96 (arr. D. Hunsberger)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85fb295d8b699cc0dbfa1544dfbfb878ae158f126fd00151b96a6ef4f4598593. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USVZX1103507.
2014 Midwest Clinic: The United States Navy Band (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6742295e10bea42a6e534ef9eea782b9bc900ed2d1d65920c080ffd1863ec0. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USVZX1417209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe459ef40e7fc101d56c2b524ab105c10fd51215c597b995933e8afec00c79ad7. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USNE90805804.
Suite francaise, Op. 248: III. Ile de France
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff644efd0d76b999e5efa2b433298cc03c9ef362a68572b1fb972198f5d733d. 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/USNE90805805.
United States Air Force Band: Russian Expressions
2006 Midwest Clinic: United States Air Force Band
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef7bb5cb7229f1da9dcc8c2177889237f65ca6e660ca5b7e1d6ae951f05c636. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/USVZX1102208.
2016 New York State School Music Association (NYSSMA): All-State Symphonic Band & All-State Wind Ensemble (Live)
1999 WASBE San Luis Obispo, California: The United States Air Force Band "America's Band"