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 0x627e04c7421508471612f01ad9a084fecb43e5f2014ea10cfa3745d1569238a4. 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/3abab5e8-ab8e-461f-84af-f9e66f0207e9.json and https://artists.proofprofile.net/proofs/artist/3abab5e8-ab8e-461f-84af-f9e66f0207e9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x18cab02c46f65fd15fe8bda9bc0a3f87474769d21676d5b23b3b2d763b3ba332. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAGE2273825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973b45ff1a74fb30104cab9d09f162ad365b36373a4ce04ac8aa7b9463c7cf79. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CA5KR2454365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7748ec20aa5b7905b9e6cf22866915b029f9d9364d0e54a2a4e3b7ee805695. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZTGW2404933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf72a2adcde9280e388ca361368d3fa595903f056f58eda759a1fb47256704b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZTGW2407049.
The Roof (feat. Too $hort & Michael Sneed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468221b29e92d31bfc90176e51c62d57f13a84057e182376a81f0266cffc97cc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USUYG1442445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fccead780042bcf0ca3739d4983907e0f8f064e6fe04e7403f9a72f6661862b. 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/USUYG1440119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315a5be37ea31b2a58719b43e51d3ac9eea44154af4a9f48e3b4c549f7d1af58. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USUYG1440122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee33c55c8e673caab3ae480bebe321ae48690c89831ed781174c3af292234f06. 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/QZK6J2019472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9546e63e5a81c17be42eb54d06c47fc61b9ff16351cb74d7181b2fddc417a2df. 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/QZK6N2359824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fccead780042bcf0ca3739d4983907e0f8f064e6fe04e7403f9a72f6661862b. 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/USUYG1440119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468221b29e92d31bfc90176e51c62d57f13a84057e182376a81f0266cffc97cc. 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/USUYG1442445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315a5be37ea31b2a58719b43e51d3ac9eea44154af4a9f48e3b4c549f7d1af58. 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/USUYG1440122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e36fc2acc260953995f2dca01c17e7cdd4c5e79c8cf97f8230b3b654c9c3e96. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZQAY2487581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e36fc2acc260953995f2dca01c17e7cdd4c5e79c8cf97f8230b3b654c9c3e96. 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/QZQAY2487581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92efc08e3ccf73054f46a5e2fbe53536f5a35417e108fb2c122039901ad8b5a5. 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/QZEQU2401553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d702d2e7eabc6ee254b6101a513c430f5d36c735db52795ad565e9a4ff7c4a. 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/QZNWZ2304526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd63e15553fe95e11f26285065e6b3da8676e059bfc9516987f8b07a68b159d9. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/US25X2003061.