RJ, R&J, or Rj may refer to: Arts and entertainment Radio jockey, a person who hosts a radio talk show RJ, a raccoon in the comic strip and feature film Over the Hedge R.J. MacReady, the helicopte
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 0x76dd34352b4a3725248b0a7058216b7a01091249167f0e925716bf3eff312eda. 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/404d3839-d6ac-42ae-a622-d806c6ccd8f8.json and https://artists.proofprofile.net/proofs/artist/404d3839-d6ac-42ae-a622-d806c6ccd8f8.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 0xf8d253c5155f3c80d938660a104f539278c557c867bfd8dd12a3fb8a74ab5192. 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/QMJMT1600976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f99c6551a5c4d9ccf4ae7fcad52cdbd9c42f83e988dc8e0ea5c248e5e95155. 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/QMJMT1400135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b4c74ab1ee331c23f40ed8a5dd032770e87b9abfa96909ef24d1bd4eef22ae. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCACU1683722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d3f58ef5a84ddbd37396fbab1a07c5286ec3709d95fc3de4f90d2d6f93fdb1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMJMT1600990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64aab42a86a6b2433b0df2518d3a171449d116dadceeb1e03e34eb8b3a6710de. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMJMT1400113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6112c7d68fe5895ef3c8b202df22d02790fd781e165f77f04d6e46c74ef3e9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMJMT1600982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b72ab5149171d4f874e35f94fd43f4aac46cab5db20265e96ab3ec39f60591b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMJMT1400112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d2f4d72620c48fe2e97ce92f22e490c037c5f39273d2495ba21e92a0366882. 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/USUYG1092278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e9be6be62d63075512493335fd3a3249f0ce1d558f9a18d4e739e588d3a40b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USUYG1073094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474258ea0970b46c0884cebacd77a858dacd9ec8e1da88736ea05e7b0aa9b0f4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMRSZ1600925.