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 0xf4846d3946f46f5137ab0676e9250302670ede0b01a8cddf4614af0e4464c4cb. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/48fd0bbf-9719-41e4-859c-cda6f89e853f.json and https://artists.proofprofile.net/proofs/artist/48fd0bbf-9719-41e4-859c-cda6f89e853f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bite Marks (Original Motion Picture Soundtrack)
2015 Illinois Music Educators Association (ILMEA): All-State Band & Honors Band [Live]
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 0x21deaa5a89fccdc0af6ba3224e5d6bde70610dd088012aa86e7649763e2773e5. 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/USVZX1501302.
Coastal Communities Concert Band - 28th Anniversary Concert
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1708ecbe48d3d21ef1023e1181cc23b04a72339d5776312aad4ea1dcdf03f476. 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/USA561297647.
2017 Midwest Clinic: Summit High School Wind Symphony (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60b566a5b2824b4da0d000d37ee3f67644d8e12b90ec821c421ca027ab398b6. 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/USVZX1802006.
2013 Midwest Clinic: Lockport Township High School Wind Symphony
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e45d444a5fcc10bdf9cadd97010a118899b997b66a75746a164f8f50932af79. 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/USVZX1324604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9db087c6dae82bfb5a4d96e3655b9a38bdffdaa13de6425a5d056d6dbacad73. 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/QMZ621500439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb99204820201643ca01387cc9411e3307632dc0a3d134f65f2cd22d95a86a34. 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/QMZ621900228.
Association of Texas Small School Bands Region 3/20 High School Concert Band
Association of Texas Small School Bands Region 3/20 Middle and High Schools 2022 (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8733b9ca588417d7b43626a607f15432fe6009a57fc8419cdfb3455cff899211. 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/QZ5FN2253339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030495fd710d9749d5ae5d0c7706ad35b7df2173e37367fc9d6a82bc7b6659ff. 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/QMZ621900060.
The United States Air Force Academy Band
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5b6fb5cee9cfa0e8d1d07a9cf9ae6f77ec9178269833169c505bc0ef291573. 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/USA5R1030813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7753d78a2f4dc9522eb53fb407cf4c4d11ecc4b4d8810ea0c8d7f48e7267f9bc. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QMZ621600382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b848b42da5c65000d5fdf2c1d3fd2834d2f9d9bc6f0d0510f2ac041609fd3b. 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/QMZ621600405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60e94f1518141e28431f3a4728c02cc05761fafe29489891d1889922a417ae1. 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/BEO891700700.