Key, Keys, The Key or The Keys may refer to: Common uses Key (cryptography), a piece of information needed to encode or decode a message Key (instrument), a component of a musical instrument Key (loc
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 0xedbca23e245d39c169856452a163d6fd841da099318647e3304236ffcee33184. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/99dbdb9a-352a-4e7d-bf4b-d1041eb62776.json and https://artists.proofprofile.net/proofs/artist/99dbdb9a-352a-4e7d-bf4b-d1041eb62776.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 0x45cb5c46f2244a4c37d71e13db5afc1c0683d9d8977822fef3964e052975cbda. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/TWCC32205877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a1d1dec424fa72c551688721cee9f54da6c37f6ee3e9e64b02855819830202. 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/TWCC32310308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66f36fbc19f35632fb4188b7cbe059c374fb670dc2667abb4888af841a2de0d. 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/TWCC32321114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e8164a4002e3bfa18288b036bc9a12164adfc258a88827172b57d9e65c299b. 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/TWCC32321113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c055b08d8741d1acff0e3ef1643b68be0bddce062d71e610d57b4a11a2877c1. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/TWCC32321115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a1d1dec424fa72c551688721cee9f54da6c37f6ee3e9e64b02855819830202. 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/TWCC32310308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb202808157edfb6996f98a14e144e34a034e7082b29824812ddc2d9d7b3c7b71. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/TWCC32300299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c3e4c532bac7f3e0e02f7a83902efbd6127bf6e2941f88ec5244a47aa90b8f. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/TWCC32300300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bff2f11bd61ed451c1b91eedaf14b6a3789deb00f465fb04ecd70ed24bf2f2. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/TWCC32300302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808b9909fbfe885336f1f25f9ea341a5748716fee79000f53d75f66f39a21d1e. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/TWCC32300305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f782e5c7ac3540b2346802d70475360a236812c8f2312b5eaeafd5b050100d9. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/TWCC32300306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1a638a78a68edf47f7a3ee5eb05ceede25914ece85d08115ce72c24c2b07bc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TWCC32300307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e211f7e978bcf49cfee9bf5fb29fc35d33384df0d192417b9bad461beceb7c. 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/TWCC32300308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b2b2404252f72913c99b705da0b3b362f50adc12663f209d2cd91915a9a955. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/TWCC32300309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62811b24bc20b38579bed15dbf3a4a86259c22079b6a952406dd94f467db5f61. 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/DGA092415397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4352a3282b6468e770fe0cfc52140a04647e6fff18742b430b452dc8a1a691c7. 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/DGA092415398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda96e8adf7224a44d7b050d498f24c3b95b851d19beff461e7df23ebef05cf60. 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/DGA092415399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805abdfc13148aa6c566f308208044005e58fc297f1dde05330f41be88e67825. 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/DGA092415400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75cad046cf8688057816981c453b2e1307506338c98c59ebb9ffdf0d4d02a12c. 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/DGA092415401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6800239e00192cf92dd0d07107f1918fd532ee2d9edebd410eea4bbef4ea3e86. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/DGA092415402.