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 0xd653b9d06b3a09747bce3065e2a8adfc0f98b8301f501bef6410553f0ad0b966. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1402c239-b998-4973-9b30-ce470e7c49e3.json and https://artists.proofprofile.net/proofs/artist/1402c239-b998-4973-9b30-ce470e7c49e3.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 0x8605294df0c4533386293eb7cff597648c756c977a4c5abce50d17fed3d27b76. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/JPP701001524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b749c0e6370f380c49ce07b0828bae1f71eadc87260fbd6af9a3ab484cb41b. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:29:22Z), 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/JPS809908003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8345fea05ce9741f3a054805c98a41ffe1cc5154d7b4e0b02a5fd4cfcdab648d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPS809908010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f2dcc6cb715e9229550f4877e2657c32dc404467c31ee431bdf0b7b9aa0af2. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/JPS809919607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337628cba57e514d040e06bc707e57ea0f7423a868cfed0003184164b8ba83a8. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/JPS801840138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf75c954ea90b1881d18ef0cf4c674979ab2ab3722745cd4a5a99a143fe3335. 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/TCJPB2499761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a301182affe84e7c8a43a9ed5e058f97d04b6fc9539a81b1751418b506ab43b. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/TCJPB2499700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7420ece2ca1e03c6483ca0af205e8f5d98b450b1a8cc9c459f01860f290d3d05. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/TCJPB2499731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6409be3abc407ea8585515748597e44140b002246d4e366011d21c773010e861. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:04:43Z), 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/TCJPB2499744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065f04f0b5571dbc0a12665df5d7e608a575095efee6584274d1d12762f25f71. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/TCJPB2499748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf75c954ea90b1881d18ef0cf4c674979ab2ab3722745cd4a5a99a143fe3335. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCJPB2499761.