Eternal Summers are an American indie rock band from Roanoke, Virginia, United States. Singer/guitarist Nicole Yun and drummer Daniel Cundiff started Eternal Summers in 2009 as a duo after being intro
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 0xc4170f35cc59953ef672af8fe9df516a6b905a770730e5d6f4b55f15dbefd57f. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4d8d0e73-03ad-4444-8dbf-ad37b428ae5a.json and https://artists.proofprofile.net/proofs/artist/4d8d0e73-03ad-4444-8dbf-ad37b428ae5a.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 0x255a1bc460480f6772c81437a429a8bb48c262515700481fc511fefeecc8e82a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/US28E1056603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3eef0905037d30989416649ea52f9c70b8a95ca3dd567666ef1a325b3adb416. 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/US28E1284602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70fcb3c9e904fa0d693282e04075bf94a99ceef398da2b697290820de4dac131. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/US28E1284603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0363f2c2aa0ecd8ec26808a8007ea229dc83d560799d7a6ddd02aa006be8d7d9. 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/US28E1284608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d48080ffb779f1baba53578cf15a6f991c79fbbd5cddf5f31f3a40aa2cd7fa. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:27:54Z), 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/US28E1513002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44eb4f7ae05cd159143791cb292fc98cd639a2c4d14fa9b821a57916afef946a. 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/US28E1513003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11732d28de7220304e98772174655690d99b18e29c15153809846f37fcbcb18b. 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/US28E1513006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd65591a8963a2cdfba2c483ed25f5616ce41e4881777f6fd61abf27a145e85. 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/QM5L61800017.