TJ may refer to: Fictional characters T.J. Detweiler, the protagonist of Recess T.J. Hammond, a character in the miniseries Political Animals T. J. Hooker, an American television show and title ch
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 0xb57dc6348452a83e4f64bddab15d7b106922493313a304d4b5555d25e63ec911. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3cdd668d-07d8-462c-ad35-0fe03fa81642.json and https://artists.proofprofile.net/proofs/artist/3cdd668d-07d8-462c-ad35-0fe03fa81642.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 0x2ba70e0aa59714b6921616c3c2bb4d9e114ac8be23f5e217b687122a67cc7efe. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/UKXN22078628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560f5ab1f1159a59a3d1d164b81576ffff292d415e247b78365b2a1a818a12dd. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QZPLR2490132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9308e2974b6d3a223730e88b8ff0606da661fe840ff1683c9bc5db1adcb1b685. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZHNC2590194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9308e2974b6d3a223730e88b8ff0606da661fe840ff1683c9bc5db1adcb1b685. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZHNC2590194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d77ab1b79df5f9b59f5121f229f3e5f0477a2018cc61ff41d7538541590688c. 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/QZMEP2544642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675103d9cba88d87e7a71220b5991ce09aa456aa361adfa0c87dca19ae3e3423. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZMEP2544643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ae7f36d50bcb59061f1940a9ba1da35268e03de33d0a4f7c21c92f6707f0c2. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/QZMEP2544644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e937a6a84793a18dcfe53890b9e9d627eacf8da787cda12759f49f42fad955. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZMEP2544645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9068d4c55b80a4224eb91dbbb3ef33e5f0c6ee735fbf8be8baeb7ee77dabdb9. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QZMEP2544646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b2ef5ef5120287fd9f0259bea0cbfa389c4e933649518e0bc405c582ffddba. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZMEP2544647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b0544e46b90b83d76fea38aa7c3bf2f5290cbdc64d38f7eda71541b0f4ecc2. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/QZTBA2291263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b2058136dbb2752132145774886ee3e5c70457a22294453d72237d67dc9928. 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/USQY51613808.