Yellowcard is an American rock band who formed in Jacksonville, Florida, in 1997. Their official lineup currently consists of lead singer and rhythm guitarist Ryan Key, who was previously a guest voca
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 0x919b457dd84f59d8b273fd490a54a641e5744565b7f56551fface696b653f670. 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/b83000da-4d49-4c46-872f-31d5d1cacc9b.json and https://artists.proofprofile.net/proofs/artist/b83000da-4d49-4c46-872f-31d5d1cacc9b.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 0x7b75f1e81965558e09535e1b204e25bbba6189e19effc76c1ea4c122441d1765. 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/USCA20300233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2682ae610f53bbf2890de51a8ad0d6b1810920094f1c38acfcfd8b3d062d10e5. 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/USCA20300236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef6687f5d349915e4707a7a34b0b1eafe9cb8314cab808d7ce121927410bd7d. 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/USCA20501001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f0b75a0fe8ddc57821aeba1ea8e7eec2e9c8eaee70a571de5840dfbb02d4ea. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USFW41391517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2682ae610f53bbf2890de51a8ad0d6b1810920094f1c38acfcfd8b3d062d10e5. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USCA20300236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b75f1e81965558e09535e1b204e25bbba6189e19effc76c1ea4c122441d1765. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USCA20300233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07982c401035b6a850cdc18528740598e938b9b590e6bd75291f4872ff43abb3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USDM32356401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a2bb52fdd0908479ed8105e8b2612b3ff068bf12a57414782639cadd55b4b9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US5261318207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a2bb52fdd0908479ed8105e8b2612b3ff068bf12a57414782639cadd55b4b9. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/US5261318207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b75f1e81965558e09535e1b204e25bbba6189e19effc76c1ea4c122441d1765. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T17:11:37Z), 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/USCA20300233.