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 0x27eee192b049270dea91677dce33c0b4eb45cd4aab698998f1c9ddbf93204cdd. 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/b8114df7-1191-4b0e-a008-1646986a860b.json and https://artists.proofprofile.net/proofs/artist/b8114df7-1191-4b0e-a008-1646986a860b.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 0x3cd6fd2be87ecab4e2bf68422fe7cd62311e0e54eb5d2d602eaec2cd144ca56a. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZHN71992320.
What if you were real and not my Imagination
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5aac7121ac875aa9447e1b0ae67d1f6bdedc1d605168e3f748a972a79a5809. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:04:03Z), 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/QZHNC2227798.
The Sky is Cloudy When You're Not Around
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b043d30521e3d94e9a1a70876f370d6821180475b833a66ad0fbbab7799472. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZPLR2293036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a66fbbd4a7a4ed49d944b8d80641aa18546abfb789eed6715f2be12eea37473. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/QZRP52279012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6ddff27fdbd1d696352b8cb65a130c6bc532907c0c23f71c4614760d65bf76. 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/QZTB42258477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d9f5146babcefe6c313da83ac44c03b85ca06c00735f35f66d93aeb3809214. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZTB32204516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe06a29d0b842cdd84dc55e4aef3d95dc1fc6e05c9531b7dcad546c17f03f8a9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFYZ2352126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef9e790e0d0a82d7a984f8e3b395205cf003631f5557fac31150cf9eba80280. 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/QZHN62334139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3155cb6a65f93627e535c1b8502b1e7d110b69b35fa669183d149c99ad514ac. 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/QZK6J2328940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218f21bf3b194fc5eca21433765ebf9df5cfd09983e1ab1a069fa3860dc56476. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZK6G2394778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7800f1671dc862f702077e676ac6c309b4556bee1c1f25dc0c02c2eec4b5ef. 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/QZTAW2384885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb3171e439a3a4627411773198f1e8f5a0d0c7b64d0a06bd33587063b588e00. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTBA2385701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd659b770e0266e20aaafc080a50d0e05953f4381539c135916fbd2b44cf2a15. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZMER2405863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827387aa4cece277531c0f5bee8ac0aaac1a2929369fb9e178a3fde49771d9bb. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QT2VB2450552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17cdb008274170aed82f9186abf59a3bc559b4e0f7eb3ca0fd5743f7148dc5f9. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZZ7W2444525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a7d837a68de1f3e57ed2ebb025188511e1809617d7df56a0d156fd0b581c90. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/QZHN42580318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd7314b03a06a4f9c11d6e67e57581c80518b00896041a4737ed5418e1b21ca. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHN42526319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ca8f1505d0e8a4d9bd2ae19efad496df886bb64443902f4631fadb1b3ec43d. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZMEP2514418.