1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xebadfa7e870c696de23a526365084b3f8c3845c2474feb3f382e89d45c61fff1. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f164d3b7-f393-4a57-811f-fa052fcfdaff.json and https://artists.proofprofile.net/proofs/artist/f164d3b7-f393-4a57-811f-fa052fcfdaff.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Gill Bay - New Music for Flexible Instrumentation - Demo Tracks 2018-2019
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 → block OTSBitcoinBlock must exist at that height 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 0x4a4be74788ba5f78a597269bdd8803edd68dce6169bb4415ec0cfbf9bd704121. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/NODGN1808020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ab5ed7a9b07069969bf81b3afbb1c2ce3dfd3e9b76cc7d70b02987a8029f7b. 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/NODGN1808030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e182f1eaf6126a3b1ab1a89a7732f2ddf01c3880e8ed06e461f665f04cb3b2. 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/NODGN1808040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ace85e43594af470ec361c267a3aa6caff6201ab3d11cecccd2287730bc1f7. 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/NODGN1808100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c929a8dad5f032d4f224b17d4998d996d9c7fbebc8d8f527c68db18488fc8bb. 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/NODGN1808110.
Nøringen-Springdans (Two Norwegian Folk Tunes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92383f21a95301de24c0432af72bbf3cc8802611bb8a8be386ee2a831542b916. 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/NODGN1808290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc9b7a5a094cd548485d3e36c35af10fd7e29e48f466fb1033bb4129250fb14. 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/QZ5FN2309811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7087582ca73fbc448158c5ef1bb696f3beae7e4c72a4fa61385e230b91c704df. 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/QZ5FN2309828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe92e1c70da593e4981f23359a024c58484d17e10d62c2402a66e851b1969d3b. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QZ5FN2309830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10eed59fbb705745c5cf44f921b360afade076a14a9286d314454c1cce9c6f16. 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/QZ5FN2309832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ff73193096a8141914bce9a79fc7761c275f089590739d98b5db60f19f4216. 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/QZ5FN2309833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04848461d06e97ace3e6ec5bed67d33056aa114d336cd05a6e133bf5d26580c. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZ5FN2309835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd98d927806629120a4fd247640cec4bdbedc08b92fc709f1cb3a9c341383b2a. 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/QZ5FN2309838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5370b3c323556537c12ef54342319552400daa5fd3ed80201db4fb4381db035. 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/QZ5FN2309840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48948b602755b6ed3741476b9ede34ecd7774a4a13cc60dd9bc89083ce6a844. 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/UK6822102399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24407eff1b62abf1891449b9d3035fe584c2cbab4357eb21c60cee775312f159. 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/UK6822102403.