Allegra Krieger is an American indie rock musician based in New York City. Krieger has released five full-length albums and a collection of B-Sides to date. thumb|Krieger in 2025 History Krieger's fi
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 0x3bb4a4ed1e6b8d11c712055d44ee61cb9f35db46c09a28d4073a253958988dcf. 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/4fd2bdfe-19cf-48fb-8725-85a131a91e0b.json and https://artists.proofprofile.net/proofs/artist/4fd2bdfe-19cf-48fb-8725-85a131a91e0b.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 0x5c410bfd448c2ae2ec01d0e26acddeccbbfaa7d3535f0a96b83e31fb8463d529. 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/USWEX2000000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce45e149954dbf7271d6a01dedf59bec4b930539c389d3ae0b8d07ea70071a8b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T11:59:50Z), 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/USWEX2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c519570109fc2f32314fe4490dd655f138c98ea0c0513848631844b2356416. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:37:44Z), 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/USWEX2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c588638d29383c7a3517cd045df7733d5ed8c9de829c578c9a4f596b37091f. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:45:52Z), 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/USWEX2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf38bc6a5c56bdd547869fbd2c9286bce6f54a2659cb0943c87ed61ce84ea34. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USWEX2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1d33c8f8c0d2f3634373347bdf47c17a52a2a7438f32d88fc13ae169442725. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USWEX2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e79d77d69106113a85bde918ccc9d716225e0ae421a05edd89a5bbd294f9d37. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/USWEX2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b139ee3df43d825341800ec2e46e790262822f85aac33b0ea51c226a8faea7. 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/QZAZS2309207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60ec044462ffe7c1959a6471ad17249ec970c1d4c9a691a9357228a563f3f6f. 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/QZAZS2309208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd173ad1d750f356bb0dcbcb98b589c8b0065c2166977737be1036ccd5146165. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZAZS2309901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2431c427417142cd5d235a6271ff59a306df93541ddb539e9f927ebe96e14d6. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZAZS2309902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24c0ede808daffbd8995ba65603e8bc230f42918d4b0fc4d38b7ab3059de29d. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZAZS2309903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379afa7aa3221ee353e7a94a8ddabd990849e629e324acc1ea032a165bdaed78. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZAZS2309904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e77be9526a4299900e0152cf695fd94eaac37a2c05fb77f5204db5043a4920. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZAZS2410202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1baedf265b1f1db246268942e85b8cc85779fc1221c441fd68299675013c4045. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T04:21:43Z), 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/QZAZS2410204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b2ea0cc83902222b95adf54e81799641b63d8d271bfb1a60d1ebba5ede845e. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZAZS2410205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab47ee7737b80f7b92be100ec9599dac53db0c7ebc32b0f1532ab6bd49d9b0b. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZAZS2410206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2f262233122b2276525fe5f62adf57e06f7982b8ebba10d528feb6718140a7. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZAZS2410208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd470ea8334bf79e6352406fb3dd07380ca785cf8a09f640bdfb58ae7dd11dd2b. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:24:01Z), 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/QZAZS2410209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001a7733ff95a25b0637cafdbd3d8c022c0f99e858b48826a5bbf91f861c0be5. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:01:21Z), 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/QZAZS2410211.