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 0xe5ba36a4ee3d88247adb25b2a838d3d98f2fe5000d719774323620bafbd0afea. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2851a0c5-ccf7-43f2-9586-8bdae1bfc6bc.json and https://artists.proofprofile.net/proofs/artist/2851a0c5-ccf7-43f2-9586-8bdae1bfc6bc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Toseina Reworks 15-16 (Chopped and Screwed)
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 0x71b3fa6cb60cdd932644978ea3b6812fd84eae63bbd05dd0a6ef6108462b9cc1. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/US7VG1940735.
Creencias y Abstracciones - Sped Up Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a5eb432a5f7cafe366f7b163927ee25e885d2aa184d390cb97c1d80fc8734d. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/SE6I32496503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0777d818c3b887e477a67cdea8f595b8e27468402d0aeeaf0c714ea8ed82ee6f. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/SE6SA2492979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b79a7e42dec27fd5b6531f225f443e317f95901f5443382db515c3fb52fa08. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/US7VG1940743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69b4f98d499f467c48d356f3e550bf9ea1f1c6312d5c9c60cd5c2286dd1bbd3. 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/US7VG1940729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5059c49b8c27a3ed957d790b6108f232184a2d0f8f0529965d268bee2c526e4. 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/SE5752060539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae9ff7da42b6f900ed0f2c1399400645e2f180f077f74f76d433891c1bf8bdd. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/SE5752060527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb936aeb0b240df5f6fadb46d3c063c2a69b09950d9cd26b7ef37c16ece2f35. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/SE6SA2492980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3c321b851c49d65b2ceef97a42a976427b13fb841525b888d8d7cb01c46648. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/SE6SA2492981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781081dc00094bbf8dda8aee3b6b8a8d6e837772a783ca0548966967b6982fb0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US7VG1940723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d5ff455bd9c5369a851acb8fdb68bc75c3efa2c17b30ef87a0c1d9e79ab030. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/ESA011800227.