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 0x12c4e04c128de3a801bfeb8c447cb04fae1cdda688400fd77c6a768779381020. 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/d19fce60-e3eb-4f43-bea1-43ef2a52c72a.json and https://artists.proofprofile.net/proofs/artist/d19fce60-e3eb-4f43-bea1-43ef2a52c72a.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 0x4bb7ae16bac6453e7b13456917a502a23b8c15a228db20686ba55e744d96d019. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBKQU1786338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ed97a1a2b7d44b83dde49fe4c3109e4c92451a693ee7e340e5a2db385731ea. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/GBKQU1832988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c1eed8bdd0552e1379fe5f8f0a8b3712b4ed2ffc047fddd4fb22216141fd78. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GBKQU1969831.
Deep House Hits: Ibiza 2018 - Armada Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2841293703b3dcab1986207de89c932876fa95d8de4912bd70ead34eb4a1312f. 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/GBLV61725593.
Dimzy x Monkey x Sj x Fumez the Engineer - Plugged in, Pt. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4716b5b3bafb0478fc678186b546516f941de49911f7a3e972f47e2f1dafeba4. 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/FRX202145761.
15 Years of Enhanced Music, Mixed by Tritonal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d61c276ab8debe278b89c0b7b542f040586b2b5a14fc89d087e9244c577dbb. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GBKQU2364395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2de022732df096173d8def375ebe1bea7b4753d50157e70ac63b0d961b8b09. 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/GBLV62003016.
Oceans (Where Feet May Fail) - Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6cbc891f040f699e795fe2029356256b9a7df9695e04ffdda048df29543e9df. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/GBLV62003017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2355c9f646b3c8606129e1040d6d05d7b4f714261e9da9b1e6feb4eb14b784fa. 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/GBKQU2095296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25bc02b8c652c0d9912ff67a4237665c51c285d1e4fd29389207f353e971ab00. 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/TCAFL2184243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f71c21295b0ed82d58f0ffdbf9ff5fee2b554d0e77d7b3368f329c44b4d264. 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/GBKQU1740614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a510bf51ffd0dbeb09b69664b51f6e3c903514ffb02291982354cd30f243aaa. 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/GBKQU1740618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9282af8090185bf518d0306d876d31e74608afbf23188edbb4b91e4f06f349fd. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/GBKQU1740616.