Sique may be: Hispanisized spelling of Siq'i, a mountain in Peru obsolete spelling of Sikh See also Siq
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 0x5ef787aff4d6c308b2548315bc8290680c57cd28eff41f94f6280ae07a435048. 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/5d1ae2a7-f223-4ef7-a886-249947e03bfd.json and https://artists.proofprofile.net/proofs/artist/5d1ae2a7-f223-4ef7-a886-249947e03bfd.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 0x7885f23624c409f6987f869fc539974010eb1ab0d32544fc6b1cb6e3c85a74b0. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/NL8JE2300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f2f9a8454ac6417fee2bbe89819eef7ea85e173173da7bf55b7cae8e974f76. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/NL8JE2300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20057b80647618c4f29f5f1ec59049a74ede0d3480cca3869084b8512fde248f. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/NL8JE2300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371b023d252ff3816f4b14c7d89143579c8bb67d1ce32c30d298769e1ea82011. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/NL8JE2300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b9b12183d5e40579ae2270d15dad647116234a6f53e5b9f728e00026ce9a65. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/NL8JE2300059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34a5d6bce8b543e86928c0168fcd11239c615e91111fecfc8131b6d11ba2507. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NL8JE2300062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7215c4a2ea972a63abae832891812d22b3ef8a5166532ce4290218cf75b3d89c. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/NL8JE2300074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d67f0d2529ba63ed08cb575d9ec5b47193607a9623ab761ad447ad05c54246. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/NL8JE2300082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0a7cc6f931136b1cf042a4299007deeba19cfe9982c69af98815a531abe838. 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/NL8JE2300085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401bb6d9d260729551291e385fd5402816de52bdf1849fa304f80ca734088fbe. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZPLR2140082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf48e908be4f610f8fc5abd8fe8963cb9f3b739cc5abd843e68d7b6a7406409. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZK6K2142205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a679c2605c18a22d3cd432305177a13dd7329bf33a401daf86212f7b4626f3. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NL8JE2300091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0705619909a9d420adfab0ce6d5dcd474ffe55dd9fcf800ec1b61437ee452dc7. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/NL8JE2400106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ccdaffd6381ae4f5fe40b23f6e1b5ccce9fb7e712481296c8c6f5ae76a7aad. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/NL8JE2300071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec4b9394ecca2b8ad8b69d9dd9269b8cd64a6f0f8552268733a30eb6c510b38. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZDA72139294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097810459f895a37da30917f1d1ca6be3ae1d46f766e946a22a964179e687456. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NL8JE2300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a19ade205debc3597bf3dc27da350ea872af8ae4684eb00295e90ef423b8b4. 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/NL8JE2400126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc835a4e0fdf3dd694d4471b58e9b9b5425017ae88ca905b30658637353de0b21. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T02:14:33Z), 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/NL8JE2400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4d5a4bfc032461249322e2bf1e0680e554284c83f9a7f77fcba94c9d3e3304. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/NL8JE2300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94054ab139e5db46fe9c21f07f74979bf05bbdd69af9d69793e8ebfb177cea93. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/NL8JE2400111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d32dd48986a9890595238ac2df54d6f7b29f2c39b6466e68b2998bfb82f267. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NL8JE2400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ec581befd4ec17aa4d9b9cc3d7e11e5b9cefda23fe00b156a62f4709892456. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/NL8JE2400152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b834bcd8ed938138e5c67e0abeadddef081d0d38142743f1808a5aeb4dd3cd. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/NL8JE2400140.