Blondfire is an American indie pop band from Los Angeles, California, United States. It started as a duo of brother and sister Bruce and Erica Driscoll, under the name Astaire, and since 2015 has bee
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 0x3f081de41ab57250606e95771352096adb3ca4ebae9f532b29aa894235c4c11b. 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/fc2024a8-42af-49ec-b80d-7563f50a8aa4.json and https://artists.proofprofile.net/proofs/artist/fc2024a8-42af-49ec-b80d-7563f50a8aa4.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 0xb2bd5f0612de5ab5f957ea3542e1ecad60c966b06608e9b52f6c8019d0e4a112. 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/USL4R0782242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99aeb620bc4b5d197a3a7c7b8b133aacf049b04eb8980fc37d52c6bed870473. 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/USA2P1392194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20a8579460e4ebce3161c297d350a693e89a73d4b83cf815d704c251289c0c9. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/USA2P1392195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a38229fccf3470efb8c05817d721759e06b89b98ff0937d163d3c24275a6b86. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/USA2P1392196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9d36fc8d4feb69084ad5f55654413318451971673da177a71d72cafcfce880. 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/TCACI1577700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaedbd3f87b143b2590e0f7724a032d4f179e64c623d582dc179015bc96f43adf. 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/TCACS1651444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dcec1cfe700c9694465ac11709544e1aecee4f8442462f75770a809da568a1a. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/GBKPL1778465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18dce9af6c0464389e8d1a632e9fcff5f506ab8310d90d1cc1293435fc8cef78. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/GBKPL2029312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164f1d0443bf5e2867a2738c2bdb19b8a39b2a030b228cb7bc624b0f47b3797f. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/TCAHU2424964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399af4a368dafb837de4497f8f250fa04540d08001041e41b143f0f5bc241e01. Chain 2 (Bitcoin): anchored in block 957826 (2026-07-13T08:56:09Z), 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/TCAIM2487677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5cce4a41d5e6c9f2b89207daa55f2c760fac4dadd2db831df814c4c78fd460. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:11:45Z), 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/TCAIV2433041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9662e4766a2f70e637af225c1ace6f93e4287c706ac3741c5b38ef21951f93f7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLZ542002240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876172fa48fcae3220f5643bbd2a52703fac2cdaf1e78ad4e5de71fd6ade8633. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T17:30:20Z), 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/QMREU2043003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf926ae1052e15c57396441eb2fe1d4b79636fb4eb6dfdb0c7f047e135bbfd57. 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/USUM71515291.