SJ or S.J. may refer to: Arts and entertainment SJ (rapper), British rapper and member of the UK drill group OFB SJ (singer), American folk-pop singer Shankar–Jaikishan, Indian composer duo Super
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 0x36eedbe0bb078e4f910f8c85d4b133a1120e5a78466fe7caad1c75bb3c21b9ac. 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/9319b8bf-d820-48f1-8f7b-903ebeabc196.json and https://artists.proofprofile.net/proofs/artist/9319b8bf-d820-48f1-8f7b-903ebeabc196.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 0xf185880c3b5c73d652fd1b7f3f34e479387b91949a4fe51726ae667652ec55df. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/USCGH0969405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f084885fcc54b0489fd971fc8156351f5ab565b5d9d223dd2a8411960228703. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAAY1130360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94dddea22063a5cb55cb1792e1efd07e44f386d67f4cf9fbf61d207451167368. 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/TCACD1507053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e5e66feb5a87d67e6b17cffa2a64b7c5a6f432c1e453504905c6075c9eb03c. 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/UKGDC1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f5ea7aca44d5f2bd22028480069954dfb992b0293cd30e4ea35c48801cff2f. 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/UKGDC1800014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8100ec1fa5e16c33954ca96a1302867dcc5a6438ccc4765937fad324f0fc59b4. 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/UKGDC1800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1275d7be77240eb4c979baf0e290bb577f6d7370e2303e6e8773672e2250d2b. 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/UKGDC1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde201fd55273f1626b57334a2b29e13f1d6ca50093c60c572b562bf6fc10b856. 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/UKGDC1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e11ebf2af373dac9e2262f094ccb788f1e98104bd495cd8f5b59a7429b4b26. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/UKGDC1800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a2e25e00d5f7149bcbef983aefac02306d762515a0803e33b4504e07686ce8. 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/UKGDC1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8b015e627f843c71a96f7a57872e08a5be8556dce4f2abf055272794e3c3b1. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/UKGDC1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad534a2da74de0418572f24d0bd524dbd233730d26cab0122e5709ccc8a56b05. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/UKGDC1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800c9cd5440ad690d99e22577693e9e6a259fd9bc312eddcbec205207461ebb4. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/UKGDC1800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b779347af217009236ba735941d64b4bdb2750019bba940a232c0c26fe0f06e. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/UKGDC1800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4397ef07d81178922c25945150b1b1e2f05fc02da28472f3e8ce7138073dedbe. 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/UKGDC1600014.
Streets (feat. Dimzy, Sj, Liquez & Asap)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6064c4dcebbe97bf94383ac8ae26765e574310e0761b873b2b6350fbee66dce. 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/TCACH1568543.
Traumatized (feat. Liquez, Sj, Asap, Ld & Dimzy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d4c286619eabf9abed249a69c8cfb0a5411b88fd7cba297a8587ca57f8b740. 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/TCACH1568547.
Listening, Talking Repeating (feat. Ld, Monkey & Sj)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d430272ec01193000fd4bcfbca17cd953a0df1853f142fddfa95dfc2b49fbec. 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/TCACH1568561.
Srb Separation Confirmed (The Blue Print)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2760b80ae35e979fb59128939881755ab5f8315743be70712208a472ec163b. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/TCADK1892538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4690fe803fef9a6795faafcc60b398b57f92242daeecf561c1ea3fbbdfa08f4f. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/MYATP0900232.