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 0x2522a110ff1e9406d4c4feec26cfe1ed1c4abb28763d5f2b4418f8b0d5e0e0c2. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/34e300b6-5cd0-4b67-8b59-fd18514aa274.json and https://artists.proofprofile.net/proofs/artist/34e300b6-5cd0-4b67-8b59-fd18514aa274.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Reading the Tea Leaves [Extended Version] (BrandUn DeShay extended version)
What If I Pull Up To Your Crib With Lemonade?
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 0xad3e2486b326f6538cbeb6fd47c020169d655f801c9d0f1046a399984ce5a55c. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/QZWFP2426041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936f949f371ee425a474639d3c9d9ffc37df2fa295acc4479a2da1120a190491. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZZ762447840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c1448400cc93fd103076ddabc05c3d4f0f5f70f15ef5731d05b632c6911545. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/QZZ7R2431623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36d6b708da1fa901e870b706de22266ac3e6d3988560ba04105fa2a9bc22ee9. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/QT3EY2479036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3e2486b326f6538cbeb6fd47c020169d655f801c9d0f1046a399984ce5a55c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QZWFP2426041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0924aa348027a1d6b14dca0e20f68758f279877236d771232d549917303f859. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QT3EY2479037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848a04ba15003032a6e5f120d3a794c4c452c08f87116790a22f50238961cd16. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QT3EY2479038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936f949f371ee425a474639d3c9d9ffc37df2fa295acc4479a2da1120a190491. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/QZZ762447840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c1448400cc93fd103076ddabc05c3d4f0f5f70f15ef5731d05b632c6911545. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/QZZ7R2431623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf265ee7abc617d6a9d948c1093a39484bef68a78519bb732ca1eed1c41b71079. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/QZWFL2431104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7cc443679b600c01b553d20fd8c6ec6b6c501ca80e1c556e7a88b5af2f2c4f2. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QT3EY2479039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7033131c4523247c2085434cd273035367c1f4e5fd0286d4abb0b86a6d5dfc64. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QT3F42431807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7a384a1ade55a0854c18a4c4213c28f1eff7e8ec97a88b2157eab967b11e6b. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/QZTBF2583426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ec042b304669b18c10d1bce9a28ebac3063ce675d3f45a6ee46a3b543c837b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZWFV2592115.