SYJ may refer to: SYJ, the IATA airport code for Sirjan Airport, Kerman Province, Iran SYJ, the Indian Railways station code for Saidraja railway station, Uttar Pradesh, India
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 0x631dfd73c45ad8433712ce158558e1d1d0c9655216590f6a76ea4ef523556795. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4afb68f4-f292-44b9-a83a-7b9730afa90e.json and https://artists.proofprofile.net/proofs/artist/4afb68f4-f292-44b9-a83a-7b9730afa90e.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 0x88be4a19b6af07febfcc312ce265bd0c60592f1092154ab67b0e018c64968c9e. 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/MYUM71501243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20983e8f4d841623912d4000b1810ae54ac1537d0aafa0ef191ec07d2bcc6d6f. 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/MYUM71501244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5feb09484a0551a00643cb1a4de45b3e7831ddf8c4ee0c7b508cb205c351b0b. 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/MYUM71501246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8277966e82e445897be5670890d2750f1a946bce736de047ce0e0138d9f8c875. 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/MYUM71501247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb086169725affa81ef0e03cdd8f047657cc4b29662c1651b9316b853da109f4. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/MYUM71501248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa9c1db6a657da07d1652791f422b9fe54b9dba605e5947b618c6770af74d0c. 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/MYUM70900681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa227ac93aeb16f5c074c059655c49630cd0400ae17a7d41a1995bc1b6742fa84. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/MYUM71501249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf799af370a2958e8b0c3f2e70ee5f4f58720879ef207e21a0f8cefe55127dd8d. 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/MYUM71501250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eec2bc7e200c7383d9ebefed52c401c1e64444567fabc01c78989f6fbf18f15. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/MYUM71501251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec70409047940072d341e58752aa77b8e4e56a4ea21541919207675173db7e4f. 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/MYUM71501252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614f3451d711993ae6012a60f4c78623dbfa29fd43385f46bd801c4107625ab7. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/MYWU11900070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c70a2cdf9c877cca2a29126a7595a31928a07c816f4a26819038eafb8a910be. 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/MYUM70900131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90dba22abc77494986c3a58462db3d3ff206c892dc54d37040588e9ecf2b57ac. 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/MYUM70900350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42c9f8c6c4cc65716630082e8a7c8ad32313a90054d89c1e0f8a41f53b287d8. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/MYUM70901419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a05c5b4d83af69a77c247fcc3b328d596f86edff02ec1de30a6550b3413ce58. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/MYUM70900227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e6de09067cfb650b984a542a681463a4f926c9a15ff76cc30f6a393c7d0ec0. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/MYUM70900105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3a7a060e91a888dc48ab89f2bb23ff92d95297dd6fbd9d7cdcf09f25aa08fb. 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/MYUM70900393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca4102224e60367719f52c583b70edbbaf66f491da052495238242b8b5b6176. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/MYUM70901424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a286f2187b3fc798695f97d5bf3e3f31f186f35d1d3589857986c518b4412c2. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/MYUM70900680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f663d7e51ef55fa195f2e1a42a9de377722b5f6c28b968ba06e44605b85186. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/MYUM70900340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4263969b495854ec68c735e4d6e570572d26f1aef4080d1833363194a9692d2e. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/MYUM70900103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda80b9669488642ecae20dbca973e1b4064cbee957f5fedaa26cb10972929151. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/MYUM70901087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513aae8306c710c080c105b4caf8a57cd3ea2bda65af0cf7d04132d6e200793a. 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/MYUM70901097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe280b4792dee909897b11cab26b661a11e49e78791dd0906df42b099c327a7a2. 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/MYUM70900311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2201a1593356d44272998446f3be548f337c4a961c2b0b8dcdd4dffac86231. 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/MYUM70900947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0258caff62935fbffc45b58175dda8192550ebc97a307d8b509aa52dd555f11b. 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/MYUM70900545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9963b4adfb363d123cb5cfab3f8b77e53fedbdffa08f83eececd3be8b09032. 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/MYUM70900471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14db05b6d48ce31ea248f728684c10fa48193e913c2c1141dbd7c33de7a7134d. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/MYUM70901421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff114ea996edbf36d0ec0b270429c4ab5819320401b12f640b2212735054498f. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/MYUM70900687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd96a2e02b798ca306673b7529b31ef6b353930ca99f5043291d12dce64998b6. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/MYUM70901425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46164f1abd883a86404fa391767332d223ec804938e04b2a41a874e7365d4799. 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/MYUM70901426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e6cfd15d0276f83f96b80c5bba5dfe225a16bbca5dfc2f2f376bd2964bbbf6. 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/MYUM70900472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c056088027eed8cb688380dbccbe7b618f6654e59c315f9086b591ff98c5176. 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/MYUM70901420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9bdb6e0489d298ccd4d19fef493c80f0adf9d93cc8cb8b31829e5be975c5d1. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/MYUM70900181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a166c38557b51e0d9a219e517cc5e0a54fbb6d1e6f953f91c189bc17d7fb36. 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/MYUM70901423.