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 0x6775f74c8d5b6598b8274d350a73916ee5223935b51aff69406465fcfc24c649. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/48a83ef9-8466-47b1-9eaf-a6d13eb5e35c.json and https://artists.proofprofile.net/proofs/artist/48a83ef9-8466-47b1-9eaf-a6d13eb5e35c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Battle Creek Transit Authority - Live in Concert
25 or 6 to 4 (Arranged by Chris Sharp) - 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb1329d6b000e1bab9435b7d504289b7ea1d7e15020f2cc62a7fff8c436a14b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QM6N21793876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa96e7ee7e540a2c374ea2988079d3d7db6da86a760f6d6dd6aa2821ddbb0edd. 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/QMB751400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb38bdcdfce04b2e85b4c87acd0d29c8563b4a9f3fc99787f17e3920f83db847. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMB751400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11ca7ad6db845e223502929d424a6801af1f573296cc6c6b19d370f6af773d8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMB751400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012cec46a4f18be7ef47fc6ca556ac01b3141a1626049d38a55e1983e8a828e5. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/QMB751400002.
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 0x9c25afec87a26e255c0c21269c8cf5db934e8997c44edcd7cecd8530ac57742b. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QMB751400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d75ba803c369f4ecb2fb0e9e9f81ff98ac457f4bf879add90210b1e5d9b959. 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/US9931110012.
Soliloquies: Maestoso, Freely-deciso expressive, Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b19c90ee9cc7427cb76a489850c343563c78f4d37e3e76a4046fe9fde6b7b67. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US9930513267.
2021 Midwest Clinic: Eastern Wind Symphony (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67445515e6cfd8affef8a28d297080efd9cde96ddd3d412877faa8bba8e86611. 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/USHM22214368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb1448565b8c7eaf6b210c93ac9811d775d88ebc37070ff69461ed977464f79. 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/USHM22214370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728a75f5767313058dc18dcd02fbccba4d1ee3636c9761268a327307bc494a61. 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/USHM22214374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5b99f7a81801837b9640d5909383bc8522a827b51b71be62040da2735870b2. 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/USHM22214375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873645c5fe265a154baf75380f631cc1376359d13f4a1f11e0723860eddb2bc3. 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/USHM22214377.
2016 Midwest Clinic: The Desert Winds (Live)
Euphonium Concerto No. 3 "Diamond Concerto": III. Blue Heart (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55c5e9c7e1ecbd39349085c772a497b2b2b46e1140945e281caf9590b2bdbb8. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USVZX1702612.