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 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 0x389dc5b8defc155c26ba4b9cf49d31e010fc3225e9698b1bc3d1ebfed4dd8a49. 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/f13e9f29-e9d1-4f42-8cda-7bb0de50deea.json and https://artists.proofprofile.net/proofs/artist/f13e9f29-e9d1-4f42-8cda-7bb0de50deea.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 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 0x93abf884df0aa55fe4a57fa39ce52f5ab42aafd7e2c10b0af3647b71da0b6def. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZTAT2489903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaadac3d23410567bf69ff7cd45c69188eb2eeaf0490b7bf4c58a6dee9d4aa62a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTAT2489906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0d34e88623f81a768e6c0bda123ae710d41a9b29776aae75eb0cefc3ed3166. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/QZTAT2489910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a59ae2fcfa715941990a1d5f23b787f82c419e9dd61946b0aebaff7ace5db9e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZZ7W2406288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a7f293a0a647b47ab31a5e4e9f55d4b8650fbe7b9191dd0dc90e734fe69ab47. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZZ7W2406290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f528cf064c17cc7b745f7c97bb2a14083361c212986efc6bf4772ec7cb33ad. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZZ7W2406291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b1a4690cd491c69aceeeda9e34b010623dee4fec2d6443fa46529bad5a968e. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZDA82506069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b3fa1013ceed4361fd65af4634cc275d14cc2d1a04f3757898450c7275d7eb. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZDA82506070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f2133d1fa097b1893b4de8ad227775078c945663f18895ed9f4c424fc3e54c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZDA82506071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2028cee19387ee1880e67d587f6674020891cf16209cae77b5cfb1954c7c0d1d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZDA82506072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b03b03680c1f04a128e17b58f04e54a770b5bc58610fe01b9a964d77c36526. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZDA82506073.
WIPE THE BLOOD FROM YOUR LIPS (BEFORE YOU TRY TO KISS ME)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600dd52f03fa0026c3cad5902137d7ed1df3242834c7f2cc6270c61f5ef0f550. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZMEQ2536391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ee9a1f5e89440cec61a702e01f7398f4c14579c024aaf0e311ae1854474d72. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZNWS2503853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1cc81d2665d2a9802988a7e4bb3761f8cdc77f732b8ef753be943f24fad5be8. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZWFH2518207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279560f533e7368b28b9e04222e9f95fb305001e5ed4a25d885ac3051f5f01fb. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZZ7Q2577336.