ASTR is the solo project of American electronic R&B vocalist Zoe Silverman, originally formed with producer Adam Pallin. Their debut EP, Varsity, was named the twentieth best album of 2014 by Spin. Th
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 0xaf58d9acbc00d7b795b0653b83cabb9a930e629ca537faa9ffa36137e3a29153. 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/251b2233-3c41-41e0-8446-f570385ef734.json and https://artists.proofprofile.net/proofs/artist/251b2233-3c41-41e0-8446-f570385ef734.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 0xd0396c30da704b00eee982d94860e3bdc59b8cccbfaa458980239f77042f4bff. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QMCE31300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0f65dbd014de1441ff1af2635f06ce492eaead518af985291d28b3875cf0a8. 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/QMCE31300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f182ce041d5efaa00d7a1090d58f38e08508f094c35a8903b30b7500dc39aa9. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QMCE31300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba2163adc61e9383b0cbf5bbbf8d8474bffb204f75eec5e9d9dbc1c4f8a3bc4. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/QMCE31400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af8b13e13d27e599bbc349d91bcbb11012c011b0b4181ec41a0bb1199c8005c. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QMCE31500231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cdc06c5f5452e4e0b89889d8e3e0b43d5774e579c849bb8dd5862f61cbea62d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QMCE31500360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2015269661168811d5f7cfba01530559b9f3f2d12c68e09a11f63653bfb8525d. Chain 2 (Bitcoin): anchored in block 958731 (2026-07-19T12:35:36Z), 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/TCADM1806704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35addb41ac9e3c92f2ab53e266ea0a40743e25a4c35222c1685e639769a0bd70. 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/TCADM1806566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0780e2fe1e27cab15c8e3b8ba788bd52b3d9b04f32c0a21db87ac75104d76cb8. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/USUYG1204256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e9bef83c3b5d844f6cb9584c6e368756587bc0a36870b3f80f2e91359f22d3. 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/USWB11402706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0bc9a95341d3e95ffc8f0b5af8a21b4dbb89471b85d451cf96b484b77eed71e. 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/UK35D1500034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6433ed729ecb4e6b3c647990fc487a122f66f22c23c328269e0b85d05aa4b3f2. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/GBAHS1400234.