Anna Tivel is an American indie folk artist from Portland, Oregon who is critically recognized as "one of the finest songwriters of her generation." She is noted for being a "masterful storyteller" wi
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 0xcac1397f5880feaaa9b63a089ca26ec611c2b813b97544b91f248a52786a0d0c. 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/a81d587d-64f1-43d4-8f68-569c7b52e498.json and https://artists.proofprofile.net/proofs/artist/a81d587d-64f1-43d4-8f68-569c7b52e498.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 0xef3e19565c3bef150b53f20a749815629cdb152f4fb5fd9c7291c84673cd27ee. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/QMFMF1445250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a90963ec1a1bb7da9e7f7b4c84c5425bbcd3e7d834f149097ca03fe899aa42. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QMFMF1445258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a977cb3a427e76d08b03c5438fbdc02d0a87653ff32f28eb25ab4203e9f065b. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T12:33:53Z), 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/QZ2NM1700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x452604f155e42a36ade4acaef53727abc7e033d2e5ff4a0e4357bb2ac13bb17c. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZ2NM1700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfde7c5a0d1aa6d2cd86b549dab062832e410567234e2bc70b3555f4d1b645b. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/QZ2NM1700020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579d047f7ce9df6fb676dd9a85976bbbe62f468e354e7f02c685a7230895940d. 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/QZ2NM1700022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f12ab45747abe0ec3e3989272a50cbf4290471ee32f1504ba28abba959b8125. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/QZ2NM1800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23650df5187b3ed1af4eb4d1a6a9cf8269fd75c24fcff33ecb49d93c3f2c09f9. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZ2NM1800028.
The Question - Live And Alone (Acoustic)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50faea2f359b62b701c6a468e0a4a3cf34af211612610c0f340fd8e426f52be8. 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/QZ2NM2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4063aef9f7e478b6e36cba9f95ff7a400bd923e6a5b0400325290bee893df8e1. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/QMFW92200319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a72399354f9d64bdb1f3a6eb52efaba465e00e0b5024d15f0db9c92df6ff888. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/QMFW92200320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b1a6f88a029f5caae1d60665b6cd384b5815cfa011e3684d008e2802ca1be9. 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/QZ3AK2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a69ba64401dc03349c5b1cfe7fff6e035989b85b50aec43d7229f884f3e7f3e. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/QZ3AK2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03449e3052a02f025afa307d61885107b1651a05e464ef89fcfce8a5facf06a7. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZ3AK2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84090cd264a2d4754188685b25b02a3c9908e1aae96326f75ac52c21548df21. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZ3AK2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc00e3e4526519e28ff7da49ae159bedf0af4396d53017a979f784c97edd9dfe. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZ3AK2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963bd4873ddea76e092c5f331e170387c34da36edc4be39c9cf7f9156849d0f0. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QZ3AK2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ad40ed0cb267897662992b273a212d4f207971377fc54b6753e6f646b2b170. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZ3AK2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a1af305cc000ca58730976982f02839795f2cb17040f8bdbc1846f69b18443. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZ3AK2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea8941c378414e082a60bdf44cd50d20c3d369633c5f89981e31a41732c01a6. 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/TCAHM2327231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d7454aae2bc87f0b7e281619fff5ad15ab4183850fe3295c0fabdc4c3ccc25. 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/TCAHM2327234.