Dread Zeppelin was an American reggae rock band. Formed in 1989 in Sierra Madre, California, the band combined hard rock and reggae styles with humor. They are best known for performing the songs of L
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 0x8216169a9bb3e0e662308756e6afcf70418e85366f67ef446e422007853791bd. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/98c74cf7-249f-4c0a-b5a5-9364958f4ce0.json and https://artists.proofprofile.net/proofs/artist/98c74cf7-249f-4c0a-b5a5-9364958f4ce0.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 0x949746b33f0681d52777c9aed53c2d1db363e99dc0661db129f7cc072a48a8fa. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-20T00:19:55Z), 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/USIR39000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e63659394b1fd175a3dfdd5bce3458caabc5a2c097935fe89255ca936912ec. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/USIR39000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e18eb745f94c0da6b8b591469ca5487b55808f8283ea6a66f96f123c14e0992. 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/USIR39000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ffef5a7dce7e8d6ee7fff77d528a5fd9ccdfc6cb9ff9cc43d323905a236967. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:30:59Z), 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/USIR39000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf07451ce1f2603480ffb87cdc6c6a932f8adf19e2a34eb854f74297858cc08f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USIR39000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1474f7dbc28da2a8c780fe48554d25b00cc34a9ce5ad1c09f814e0a22e43af54. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:31:04Z), 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/USIR39100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f941914f175c6ae7872e19c501eee13404b76b5b637ce96e530abc8dacd6f25. 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/USIR39100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab04cd11d1766b51ec02b5703e59157045bf977a9c73d8f52e3de45bf85ed5e9. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/USIR39100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd39fcc742e3ea179ee92586635437f96c14a89f3af837dbfe5770ba5cbb952. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:04:07Z), 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/USIR39100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9397b2c99a36ba5d4601739544470ecb5ed43ee2291fc9a9bca833784e30270. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USIR39100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d05e796ffdd741342442537fd0b52218870e2479a87a858a662688d2b24838. 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/USDBY0601887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3bd2f3ee22022b1af0b33e629dd061d45c35c337240012d0468ecba5d241ff8. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USA370581083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa201f7fd60d606bf1fb60c13d428190aafd44fe536d82c9be191b202a4204f6e. 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/USA370657027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf302e23f4616acd838c784a87ba5bcd51f366398ef4caf5e1c380d7dd15fece8. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USDBY0602903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedce33b65581cfb92571e516b38b80a9775247ab23da2fc9c11b37dfa7b1c3e2. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:30:31Z), 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/USDBY0602904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf814c5e4f7937c47f94290abe76e87bf70ed5106545d85154d2ee1902ec0c9b. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USCA20705163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26209f9d502f324d3be4cdd36e7ec4abcf2f29d53a570fa4c5505ab182c9b2ba. 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/USIR39100012.