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 0x70ddb562c7a1b314fa73dc0dc1b3ab7315ee2d902ae7660d4b3de736da36db3b. 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/8c184d15-0a01-41de-97a3-03cf028251c2.json and https://artists.proofprofile.net/proofs/artist/8c184d15-0a01-41de-97a3-03cf028251c2.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 0xa28ad57e5831fd975b95cbd5880265a6c199f01b702667b8939f09b97933c902. 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/INS182115578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c82fa7d3e0ad800ecb7c623f9558648a4112b49c66d14ea4ec213c06b957368. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/INS182201033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e5f06f74595c46aa104b09837737a425351886276fbf45176125e9efdcccb1. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/INS182201036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe870a823161e195e73663c194f1248a8425561a61717c8d2874514ccf52deff7. 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/INS182201040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bdf8120bfa454c032dbd0fa3b3668ebf0abf7407f7397aeff1b96b17a2c556. 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/INS182201049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd858b528ce7c18f5b27daffe75a55d7425a0bcc72969931849f89d616cd482f4. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/INS182201050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97cffc315f49764c64b61932ad72561d92d33e007db40a6b3e2a9dc10a0c485. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/INA091113077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2ec5b8503b02fff6638ae3bb7c8ef449354e0877e024a7fd9270d3a036833a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/INA090912358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6077a9dc3bcde8182a22c0d095f8c29fb4a2cdd816893810e6a263ac4e1b2f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/INA091414633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83bd2e11dd5172d6ec0f06e92cc437e32ef9f2b4803191f89e54f94b8e94e4b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/INS182500591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea8b5c9cb7d1dc8acfaa6c5a21a5db5af797daeb9ab24cf62208be59226f6dd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/INS182500592.
Eathu Kappal, Eathu Charakk, Cheettu Kodukkal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ddbc47ea1632261291b9416137e705ad6020133d8cd46d33843fa054d67640e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/INS182500593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286e9a7aa3ef65b5831d7056a1972037a64cd329928208ccc1da1e3275aba18f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/INS182500594.
Puthiya, Parzhaya, Aayudhangalude Vyathyasam
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a42b0b7e737ca0fbf7c0bd475ee9439a9a7c29a1ae8d9938890057e3e784f0. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/INS182500595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3869b71a3b7134265bdd9c7341427df91e4b8631a11e3f515103af3180c9bb22. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/INS182500597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eadc5ff0e10a36cd066d16c35be277f5b4e160ab18d096ea7d554b25f7d3d09. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/INS182500599.