The Helio Sequence is an American indie rock duo from Beaverton, Oregon, signed to Sub Pop. The band consists of Brandon Summers on vocals and guitars and Benjamin Weikel on drums and keyboards. Hist
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 0xef147f89c65edbeb7c9316b0702676f631dc6d8b1453da3babab060a1af035e7. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/42fc2cb3-50fa-4716-820a-16fb2aae5f8c.json and https://artists.proofprofile.net/proofs/artist/42fc2cb3-50fa-4716-820a-16fb2aae5f8c.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 0x0e3e47e5a9a1f81300b0780cecdc6a8adfb2e877c29de4dba8d820b12bd85e85. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/USSUB0400146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618134b6c964981ecea3e59a4fd2cb6c623860762dd789d0a3f572da9e5437bf. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:52:57Z), 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/USSUB0400148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2cbfae305192c9af553e315fb0e635ed0f9a575424dd449c0823c66b551a76. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:20:44Z), 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/USSUB0400149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f96e6e57e15bf02a48f922cb55f33bec4b1bf8d64ff55583f4e3c24067491f. 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/USSUB0770903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87585e1578a1a715b31af2b40ca9c39019ea6cf4bd0191d669e0157b26f1ff8. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:56:33Z), 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/USSUB0770904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed1c5ee9377f64bfd73c53a5678c58ec406f30cf3cbfd6afc2fff1ceed4146f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USSUB0770909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944b3b42bc40472e296db901ba2d259619247d279d2d5025372cbf9cb4f82638. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/USSUB1291001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1ef6bfef1d0b1417d2c53f8c01fb1dbfe8909b061cd9ca5a9fdc5833269b1a. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:21:58Z), 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/USSUB1291003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaffb7b3671d201bb63315296be38778859a2a932d699c2eb913f28dcba2cdf0e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:46:31Z), 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/USSUB1291007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae3734969aecccd2e1388096e0ba7345d4ade4bd627c15645ef914ee8e84b87. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/USSUB1291009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6a9977662a0a2f678e7d53d3f3b465a3d2bcc83e161477fdce094611a69ed4. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USSUB1291010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5cd6594e9f184c007e68eb5beaf075626a11e10aff60e111fe3ac5b6701011. Chain 2 (Bitcoin): anchored in block 957629 (2026-07-11T23:44:46Z), 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/USSUB1413301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457bf99715a01c94a7fa78ca900273d0e79e92ba3b470959f50e96b148dcc3e3. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USSUB1413302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142eb177a05eb16d525f535b1d6368d37ce6fe88d744f0b40fb0ea92d8a83312. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USSUB1413305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09afa694f9f988f836a587a28d8923fa23ea2593444f9f72050220dd7fbf201. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:08:14Z), 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/USSUB1413309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354515d2b6f8cef4e1722bdb6ad70bd91da5ea78ca0caacdcb4a682c1476e398. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QM6P41757600.