Hey Marseilles is an indie folk and chamber pop band from Seattle, Washington founded in 2006Hey Marseilles biography at Allmusic and active until 2019. History The band self-released its first album
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 0x1296c294c949ddbfdf9690153f5a25ed72816eecfd9016183c42c38979341a97. 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/f82edc39-e384-4747-8a42-7ff5355c7377.json and https://artists.proofprofile.net/proofs/artist/f82edc39-e384-4747-8a42-7ff5355c7377.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 0xdd635ae8936984021b5c0ba00b394be8b6156808fc6dddc5d1e3bac6e7e34638. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/USCGJ1077265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc1b3dd331444de94de8b73d4650fc0eb4fd832050488934956e24752158b04. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/USCGJ1077267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2617481a7c779e15ac3c8e2b5e07f4a3945c042911708562331be03bd154758. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/USCGJ1077268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f170060ec3103252a7ae0d9580994c883a5d37b525eb7a79d7e3be72d282d47. 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/USCGJ1077271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14c154b5e86bbbef11b4d305ea67f1b5f8816a03c7c33d43dff27b84b9b0e6c. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T15:41:47Z), 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/USCGJ1077273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f9db7c9b06e332c0c5d34e99ddb7149fa026356dfebfcf669635f34784fa17. 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/USHM81197882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf83ea3d7d932d11c5302318f4e4fc0607ff6b82a34e0b04cbe3ffdbe15e0c3. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/QMKQA1200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1aab0dc43e6c6673c7f43a769a1ad576056c174018f5b38eabda1b6d347d44d. 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/QMKQA1200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e7bbd1c2af4ede1e28e04fd12b93a6ab88ba44745948432269a2c444a3f2d0. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QMKQA1200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6519324af62734ec11c0b0ac185ccf3ea74611278e592001c5171be750c2a703. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/US7SF1556058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8472b4859deee973180123f7b682fe5dc8ecfa1e142f2631b22b3c8c42468a. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/US7SF1556065.