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 0x9700c246fa0e47c513af344ae0e3e48d225e5a3dce0c9b75f0669eb872afcfce. 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/f004cd79-0d0d-44f1-8c46-26b1893977a6.json and https://artists.proofprofile.net/proofs/artist/f004cd79-0d0d-44f1-8c46-26b1893977a6.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 0xa35b3af3ab13cc3e28ae852034f59f5a6148bda08b708ca2d9c102adeba5f72e. 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/GX3HH2144803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b42eb4ee6cd59d7d915087974834ef57c1105d7c3e5f1c80b1997e0e0b0da7. 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/GX3HH2144804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0913f1381d7aa591e2b6fbf8b6d5eff88c972aecfcae9d98b79d7604a6769af6. 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/GX3HH2144805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9070794bdace57e0674065ba26e0c10fee80f0b7eb30a11109112ca58d2f0805. 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/GX3HH2144806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fff6581637d56b1c3d1e13c0846a474e70e0dbde495e582a383bedb59f3cdfb. 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/GX3HH2144807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a18b3695bf6320afbb6a8b672554ba95655217d7cf12d3a9336d01399457595. 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/GX3HH2144808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8ee0e33783929233d947d0d779aab3be200287d3c9eb4b7cd6f3318b801848. 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/GX3HH2144809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2744f40f252f50e738d69d5eae859f7f260d874c40bf470a36c83be0725fa01. 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/GBSMU7730178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9cad9c5e43f40c43a3c836064cb8c64ebd7ac5e0abde84a7e8a7f3166dd2bb0. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GBSMU7730179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae393a7668bfc04a650e03421e9eac34d36c5361c48438adb30f7dbc480bda8. 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/GBSMU7730180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712063fa5ab26d38db658fa007b7c3a814e451236d47415e10e3f4cc873cbe51. 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/GBSMU7730181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca45415c1c4aacc9b9743c4875b61826d527bd21aedc3ddcd0af481af21a27c6. 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/GBSMU7729971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1335db3436e905fa80a8bbcee2f06a5f85d2ac86219047a8b89a009f66f94d. 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/GBSMU7729972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e415acf4738b4456bfad0d32589ee80d4eb87ed26a0355ab4679f19aaeb6a16. 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/GBSMU7729973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb57337c4012ef90f6644e292e26860d5bb3d8daf9e69cbd2f901f39f2dc11ad. 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/GBSMU7729974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a3c5e6bf838d5a9f7dc2b16de9cbda4c8548c18995fa8ffcd38aa511c51830. 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/GBSMU7729975.
...And the Black Crows Ate Their Lifeless Bodies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72b9eb1fc7db8fca6d38ed8b11986839bfafdef4a466df252d66aa4718fdf4e. 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/GBSMU7729976.