Allegra may refer to: People Allegra (given name), people with the given name Allegra Antonio Allegra (1905–1969), Italian organist and lyricist Donna Allegra (1953–2020), American writer Chad Al
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 0x8ccf6de7a5548de3b42b1918aac7b190a3bfef31c47c03bd6e1fd1bad3625824. 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/dee3abe7-c6b5-427f-a09a-c414ca70cccd.json and https://artists.proofprofile.net/proofs/artist/dee3abe7-c6b5-427f-a09a-c414ca70cccd.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 0x58710fa49862a9a18df78d0fbdfc0555a14b5ab7d349501e88cb777b456e61c5. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/USR3R1900231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe49ddfba279dd8c351ba1f9c325dd83a10affe11c45a1a09e06e0de6b61a9c7. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USR3R2100102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50059e4e78ecc453aed0b208733bc793b337672e4657b86d7594155094ccb368. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USR3R2200169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e06e4fc7561407ac9c88ecfa3d535463036470baaed0ab1cdf0a761b0d233b. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T02:33:54Z), 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/USR3R2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e06e4fc7561407ac9c88ecfa3d535463036470baaed0ab1cdf0a761b0d233b. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/USR3R2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bdc15c18e3d9766f4accc483d2ccebd5ed55066c70656067c56b1b81a6bf20f. 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/USR3R2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bdc15c18e3d9766f4accc483d2ccebd5ed55066c70656067c56b1b81a6bf20f. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/USR3R2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bdc15c18e3d9766f4accc483d2ccebd5ed55066c70656067c56b1b81a6bf20f. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/USR3R2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bdc15c18e3d9766f4accc483d2ccebd5ed55066c70656067c56b1b81a6bf20f. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USR3R2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bdc15c18e3d9766f4accc483d2ccebd5ed55066c70656067c56b1b81a6bf20f. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/USR3R2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16d37a48a66b9baecf5c1ed66b4b50329a4d08371d4d0955eb39f128e70f4b3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USR3R2400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16d37a48a66b9baecf5c1ed66b4b50329a4d08371d4d0955eb39f128e70f4b3. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/USR3R2400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16d37a48a66b9baecf5c1ed66b4b50329a4d08371d4d0955eb39f128e70f4b3. 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/USR3R2400042.