thumb|300px|The encounter with the conquerors with steel and horses shocked the Aztecs, so they confused the Spaniards with prophets from the east. thumb|300px|Traveler from Australia visiting a small
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 0x08bb427fd0e8b62e67ab0d2cbea6620626285167ba737dc933f946fdfbfffcac. 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/aced4f4a-6061-49e3-bf62-c639bef71b6e.json and https://artists.proofprofile.net/proofs/artist/aced4f4a-6061-49e3-bf62-c639bef71b6e.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 0xe7182e92f40717f6b54c9e56a0ce13f454f11e394997fcd6366ddd1c36ec5748. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCABE1255020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40101daf2af890d137412fa1acf7982846ca1d87dc4777c02bf0e356694e983. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCABE1255022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf600a35466658df75286121c2d97107d013a6f79b351bc703fbe52b7e8ee5e36. 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/TCABE1255025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc987cfb843bb0293623234ccec712785b64d03bd6240ed9739527e5753b1b484. 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/TCABE1255026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x418288b343d5984dd3a56dbc4de3ce059f2ec6620fe367dea5661cc1fe3595cf. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCABE1255027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4a632b467e067d8c6332c4e29838e7d6e1423b146e6f16ece85e4231f81bee. 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/TCABE1255032.
Fire (feat. Sunny Brown, Baba Kahn & Lomaticc)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9f33808ae82156fd4cc513faaa33da567fb935e3052d618392a208521c781e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/TCABR1309042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b327bf4a91dd99f74c10b54026fd060aa53e958849f0daf2b0586139a5deb0b. 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/TCABT1462741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d89a842b10a77ee9d4974d7366d6067958f65eafe93aae7a4618a5d313b2fb4. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/TCABX1444186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7778194e5dfa9d6b3d6e30fb278b7a46d9e1caa2455631676a6bed773a799372. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/TCACH1593583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481fe91afaf29a0b75c6d5fba7c80c671951b4add0bf5e2fa7d70881ff6197cb. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/TCAEW2016352.