SJY may refer to: Seinäjoki Airport (IATA: SJY), Ilmajoki, Finland Sriwijaya Air (ICAO: SJY), an Indonesian airline See also SJ Y3 and SJ Y6, railcar models
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 0xa438ca08afdbe241d2596c6fc358229c5a7da9ffd0ad0a41b48b56e3a529ba37. 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/5f2a4c83-5f88-4b50-8f3e-964d5148a281.json and https://artists.proofprofile.net/proofs/artist/5f2a4c83-5f88-4b50-8f3e-964d5148a281.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 0x589fca22cb7a16c9cb4c676f5fc11f0677ab954e71ad7e1f3f28dd617d2eef2e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTBC2497123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fda46734b1fa8d790a687721d2ca21c1681ea3b2f86c39e36376e94d1f119b0. 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/QZTAU2425423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ffdab2d1f6370eb36ba38add1026ba1e78cbec403b48fea0a67087210def9e. 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/QZWFR2309840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97286d283524e5ea26e6e570eaa1373bda15bf6ea11764aaeedfc5a3713a192d. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZHN82405985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e18501005b2e46410053c7c9d9040ffba1b3d40d7995ea7824ad2a5cd43993d. 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/QZTAY2343227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa625f2226dd949b346141a94202ae9e41e9d5c0dbc46f6e0e8ababe23eed32ec. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/MYVM12300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecfbe2ad7075fc4dd1ca7fb14f6e4a706db1c54cb1a43add1e625f4e2e604d20. 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/QZRP42230019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2538dac402cfe16211d6489f68a2fb53c48df0e051aecd796ed7f033bd25f400. 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/QZHN42279336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89e0750d999e7a8e314a5ec75425363bfea25d06bbaadd637e1ba983eea1105. 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/QZFZ42287049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc63d223991ee906ddc6aece0bc99ec82727bd04561da9f861012d44467bd5b. 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/QZRP52180335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31673a371b234c7f78cf6a89714573fa9d00403f4f5b61062e9e447dd1044c87. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZK6N2174978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e31f5e8046f07d7ece1d3bd10f3459bd3846a13233e16f025e50fcb637b10a1. 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/QZES52170291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f4a94a5e022ebe3fa0967b3e4d29bad0ae3bcc149eeec17a1ad8724010da70. 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/QZNWY2028064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c404e67b356234cc043a085bec3b76ff9179bb4ec7f044ca255fba632012b2f. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/QZK6N2031460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572b0a99a6863d23aafc64860d3b0720e2f55d057f51901d6e77925e8e58e2f2. 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/QZHN32002161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b30b387ae721c9e474f494610a1e460dd8ee704ac28150ce9c7f4b4ccf8bce. 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/QZFZ72029279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c0176adce38815791b54ecdfead80e5dd2bd50678d957ec96b0995e5aa2daf. 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/QZK6G2094965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b899a9a71d698e57d478435998d5baf583f7d972e01d1f5dc07d5c889b4d95. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZMER2050843.