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 0x2577b680f69398cd7b22dee8c0b1b769491e2f5e94f64e9296de6ad17940e7e1. 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/22ce7b69-def6-4213-8ef1-0687f4dcb919.json and https://artists.proofprofile.net/proofs/artist/22ce7b69-def6-4213-8ef1-0687f4dcb919.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 0x4b8e28afd2f3a0dc8f30aae00e4d6d6c1ace803a8383dcaa3eab8bd7d4cbfd7c. 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/SE6HN2019102.
common sense is not that common (2021 Remastered Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a9a5af8f173862ed518f11936fc52b04dcc7b3e66861bc2ac7979d8ae8670f. 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/SE5752158061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1e86049152febe26c8e468be401585df5b695220b1bd8ebf327bcc55b6cd71. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/US3DF2110699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c2ef134e406aa1a1db2cfa1b082e15688d97497566f1ccb4792181d1a85519. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/US3DF2110700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db1d1980b0b41a46a0b487420c746c8a08d596631ba7a6c580bc1285ae7778b. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/US3DF2110703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a0be336516c92bb1d8a33f9c5971a135abd53c6084b97707cce42f01fe42f4. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/US3DF2110704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d063da522519402f31a8fb47f4e7683df885899627d10a796933f2d32e97fd6. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/BX1292100029.
it's getting late i think you should leave
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a9b2bd607f4b2396b7b4a7ef0f69731aaa36908f693d23c00746d2a0f6f7bf. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/BC5LH2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e92e9f3d4cef3f21df31f23d8384ebe24fe3dd309508811d0755ea7486bbb74. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/USANG2226302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcafede3c5e1086a06a603a6a4cbe7ba17b8c36ec29cf92b3c8bcaa92bdbfc63d. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/BC5LH2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d5de89c1db2d588e3121e986aea0690151bb6825abb1d62d5703f36e289170. 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/QM3DF2119375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ec5dd70b9d5ef616e2a4f36b7f4ee7c7d0fd94c6a7ecf8749a6a7a8901d1cd. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BC5LH2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a08f0b3f7562b94f30dfd18850a2434f5d47e37c9078d2c243298a4e75765b. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/QMANG2233175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7eb8b16dd1257d4d47e3f3fabc69889fdcc353ee901f21159a90ea62c433dfd. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QM3DF2166811.