Toucans (, ) are Neotropical birds in the family Ramphastidae. They are most closely related to the Toucan barbets. They are brightly marked and have large, often colorful bills. The family includes f
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b5b77adb7bfca7f6aba13b5239b6e2b15926747ef55649c54c831c4355372c. 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/dbff361b-ddc8-4c2a-b3b1-62d4fee6e79d.json and https://artists.proofprofile.net/proofs/artist/dbff361b-ddc8-4c2a-b3b1-62d4fee6e79d.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7217816369f46259fb325e8e3950cd4f10b7866876f2bf20a161e4dbda153d5b. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/TCADT1818007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba42e3999cac8e0d93d2eb329fe4d4bb48ba3837d5e652acb70cd4be08eeb8fe. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/TCADT1818008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda4a822cc9c4fd16b38743bb2ce338091e949e6b6312493ac550472fe548129. 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/IERNM1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fc126a3601791b73e2e82f437de9461de9103ee019dbf3c49478078143d05d. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:37:19Z), 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/IERNM1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730f1c2d9230d1cae076f5bf18d7e2b3193aeaeb3f2cbbe6fe968e7154875e36. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/IERNM1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf013668ccd35230d1773022f1daba5dc04db9b984d9d9ef1a65e83d38bb6b6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/IERNM1900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbdd037abc978d7da6a092f712709c30b67434e3d1c8f3366fcc9431b556b2cc. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:33:28Z), 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/QZTRX2467512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3826fb8dc528d1943ccc06ead55b81614b669a57f4de72782e91f2bc964ca62. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTRX2467522.