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 0xd6b2e73f3931f5d9d8e34e6793c1db4019cf6aa4e21453d832a5d0df18661f09. Chain 2 (Bitcoin): anchored in block 953978 (2026-06-16T17:11:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2b167b0b-a051-47ce-a508-ef9a6e0b05d7.json and https://artists.proofprofile.net/proofs/artist/2b167b0b-a051-47ce-a508-ef9a6e0b05d7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
We Perfectly Understand Each Other Until We Start To Talk
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 0xdc2c28bbbe58aea4ed572f98aed3ea3411d7c15d2d7456c87af7ec2905df51ad. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEY471981529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb7d85283abee91dab9d6766fd64d788b93958adbc831f6952fb0e2990a2962. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/DEY471981530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d951f38f3f0780a77498d91f43121b5900dcf7151b47de0564cb96c5811af4b. 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/DEKB72418885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0bcab7d8284f123dd1c558a267d75e479792bbeae735f4f1b872c929e5cb18. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/DEKB72418886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888ec5c517fc237624e7db1f90a8e70cdc91bcd060ea7e5c1a4602a34bcc7459. 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/DEKB72418887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3a527647228778f3146ef5eac12c0d8beb7e862d01e0b3819170aef4804a0f. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/DEKB72414282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8256f710ca666b1c2fe7a103d591fca462c9aa615cfb151c66ccf94d2e01809d. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/DEKB72414179.
Delight - Arno x Dj Dope - Magic City Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87425221951bd90a8a3faa3373165f8d0ece53361cda9b5c5b23eabfce4f073c. 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/DEKB72414281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2107f0530c4d42810686bda490e6dd04f5b49a445ec04b4410546f306c8d637. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEKB72414180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf364fb4d33781fc0594135e5064f30ecb01805c4ccb3319fb17de70ef455828f. 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/DEKB72414178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e1b647a411f8cbbaee934ad9685349c9c425631354403cd7a2683f7756ee72. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/DEKB72093175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbecb35b0c395cbc3650195b3b4e9c6da4102990566e285596c46e93536b23409. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T07:21:40Z), 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/DEKB72093225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe090e6570c5f95a71114d4c12507b11337119d56da17371a8734f00323e5e0. Chain 2 (Bitcoin): anchored in block 960223 (2026-07-30T07:51:46Z), 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/DEKB72093176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853fb1a8c88d875ed73a1f62f387dd549673fb0367944d3355922a58bba155be. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DEKB72093177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9285a1fb846df01b285d1ca57080708d8fdcb3e5c539f1677275cdcafc8245d. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEKB72089231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083f4d78129e8b6a7a75c7b0a5e41a3e8dbc587751b25b8ee6873bef7fc61966. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/DEKB72089234.