Big Joe may refer to: People Joe Curtis (1882–1972), American college football player and coach Big Joe Duskin (1921–2007), American blues and boogie-woogie pianist Big Joe Krash, pseudonym of Ame
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 0x8fbb1d3af325f4488022f906601d60c3453203a68a38b83589e8ca6aaddeca54. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dba0a3b4-289c-4088-8cae-d99c5df65018.json and https://artists.proofprofile.net/proofs/artist/dba0a3b4-289c-4088-8cae-d99c5df65018.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 0xc58c74e51a23107cc779ee86a1371723c5a51dbbf6ea620adac040a4295a3a96. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/FRX872307642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebdc096f1e06109d0cbc7ba00b27f5d432fb68fcb3959362cfd4013710c8238d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ITJA21400155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2bb212251b9ecd42effdaeba3bf75922fa2816f7de670797fd53dd8633a7672. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ITJA21400156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95b72ed96996138da872be371e0c5b3cadd164f962456cc0c8595319aad7f1b. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/ITJA21400158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52839f2d396475217969d2abdf24af0d1252eefc716903690d17eb79d1c0085. 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/ITJA21400159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc623c920dd9e8648b818b039fdb58513033b42116ac2b9851db24e9758c8c6f. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/ITJA21400160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ebb15ae27a176c508dd246f6dabe95384cc258342b4d45c19b946d46fc60d6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITJA21400162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215b1a52fad032a253670f7d38f80df84863988b446c3d73e6c1cc1435623df1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITJA21400163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a386e701d9cfc8fd9a3aaf0fd4b539fc941bd2fa7e57c9d4ac8d0044f729ac3. 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/ITJA21400164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956841a4c625204a457e9fed1c5d4b93ee6dd6a052ddf1e69aeeaed2f198fac6. 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/ITJA21400165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe601b02ca31ea752465eb6aaa3578c8a5eebb01545d38e6f02b44e91c93b70c. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/ITJA21400166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b628483668c93c715b3860e2da929db66333fbbc04cb6281344508971b83c4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ITJA21400167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e81dd6b3941a5f40426de493cd9c8c65e6fa37847cb5dc92537c5067c73268. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/FRX872307643.
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 0x4daae834fb97f48f86f4c4bf589c8c1e8be0ec605fe3ad63288d4a421c3128a5. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/FRX872307645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1827580828f9e3da61069d96bf857f6fb9ced2c4ef5eb4d6e7267866777299. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/ITJA21400157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff8198661476dd30247a75b7051911dc86b02f3378065aa5e2560e6fa56ff7e. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/ITJA21400161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03fcd77952c4c7ba8236a14754aa9250429f7b1c3a1cbd086d3e1ffb233891b. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/ITJA21400168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f78f0470132c365165baebc2bc310692d8722b19860c01cae26ee682d72e59a. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FR96X2253628.