Surfer Blood are an American indie rock band from West Palm Beach, Florida, United States, currently signed to Kanine Records, formerly signed to Joyful Noise Recordings and Warner Bros. Records. The
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 0x3193cb61fdd4bf1fdb3e6a7e05a3d5685c93dfe66c00759d173d43faf8cf9419. 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/596ebe82-e363-4d0c-bb58-310afba97a82.json and https://artists.proofprofile.net/proofs/artist/596ebe82-e363-4d0c-bb58-310afba97a82.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 0x633d5816b408d4397f67a4d64a2578958118e3dcc15c1bc9c5c68874262e6f72. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/US28E0948205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ab30ade697870a066142afa172332098b0bb88556c56749759a7d48f99ad0a. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/US28E0948206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ba593f1da439246beed419bd7551ece81f2962f0c2d3aea5d21a4870c42471. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/US28E0948207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9447c0d5a371227b49108845b01eb93a3d8e9c03254fc6f447f453f347b9b1c. 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/US28E0948208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7279e373c5e265d2faef327ce2952ae0d52e39a333539722d1854a076a0fcf00. Chain 2 (Bitcoin): anchored in block 957539 (2026-07-11T08:09:42Z), 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/US28E0948210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e4c9c4a58f915f0585523f33fcbd3de6f394aa3248f6b16d75ab2ccc4246a1. 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/US28E1170601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca6ffc89242afa9fd38d38eb0a9f3d04f6fd1abc21f12063d4e990fb8975b26. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/US28E1170602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c705884c1e1d6f81fb2b2794d097954dd9aa6897aeacbee6d4347dfc30bf623. 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/US28E1170603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63722e9904b2bc18a50be745b92fbb17876636a5ea8a6ac659e8f871c533d9b4. 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/US28E1170604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1301e75cf2d18505238954d9ead043fd057d137da7f0f0c5c3c8b33230c05a2. 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/USWB11300191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8e6caab7f9701432940808fd32f5effab82eb263f70fea58654f698ef4a83c. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/USWB11300516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8efa74959c0e9f94426a67f6b6cdec0d1377c602dd8ba3b9cc15257f3f4a723f. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/USWB11300517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05181f3bdf303c374084bc281e47e81c565dc8ed46a43be4abf60a29e3ce41af. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USWB11300519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68fb47c172bbd0e3bfc026c907b1534f1e0601631134547ed06663a1e68c34aa. 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/USWB11300520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1ee72562b720d09376a5d8eca4a34920e98c21ab0463b764886f7a75bb6d5a. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/USWB11300367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fe0a710dedf4075e2b0b16794dc6dc4425ac2eabce162672f1d333c753c6e9. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USJZA1516502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52c3f186ae19721ac89318a2ad163a20ce07ee851777ae2a27819f34c5351ad. 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/USJZA1516503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aee38e5d8dc989bc2f38150075e001522bb5b375708746145984b6fc68087a8. 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/USJZA1516506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54ed0f73f47a8bc89e7f4885f77519a3a3425e8fdbe1989422788b38d372e9b. 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/USJZA1722001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe211dd91640cec6bbd1d906cf9973ebdd86ef3d0968913690de19e4c3c3e8129. 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/USJZA1722004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4705c773295e9ef2748929c06580472257b19dbfb34b9f731e2a6385938cb67. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/USJZA1723707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993822ddb4a5805811802ebe003c401160734a96bae752cdaf06a3b6807d4636. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/US28E2024102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5545c332fcfa07667f349a26a3c1bb3ad9105c91925f819fc7d498d90a63a0. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/US28E2024104.