SINE can refer to : Short interspersed nuclear elements, a type of retrotransposon in DNA Selective inhibitors of nuclear export, a type of candidate cancer drug See also Sine (disambiguation)
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 0xc0cd5cdcf2ac94052b3f4eb9249adb82bd3b9749c50868f6f6edb0cc80dcb96f. 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/2f76c5dc-e6c8-46cc-b7b9-1bd105bdce0c.json and https://artists.proofprofile.net/proofs/artist/2f76c5dc-e6c8-46cc-b7b9-1bd105bdce0c.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 0x4fdc8d3ab3081018164ffcf19b5fe08d4037abf0f2ca4ffdaa7a9fee0e205481. 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/ITDF62377032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb29049a0730045a1471810281065e7eb1f0bfa9ae34faaeb07bcde21b02f9b. 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/ITZI71800086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c6e48d494f579c9a7bb1cffb18286d0f0caf87717957f611c8b93c8ff98d69. 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/ITZI71700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dcba5450767b9b7bf462392ee368f17ca60ec898952d3b434fd65ae0f00f51f. 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/ITZI71700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa2adef978ca1e3385625d427e40ea24259c5efe8b43cb2e7c9d6b7e979cf08. 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/ITZI71700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa78dd15442e2ff709add6df77d52b65ee85909391dc4af53e13fcf07d5b2604f. 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/ITZI71700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc408c05fe3c6283084c8fcb5835d62a56aeb94ff9d56b3a434a5353fd12e9165. 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/ITZI71700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730467cdd64a2aee12d2f4f8956092def15e0f1762d744df1c74808385894465. 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/ITZI71700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb29049a0730045a1471810281065e7eb1f0bfa9ae34faaeb07bcde21b02f9b. 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/ITZI71800086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67952a353312c5b2acec9391cc78b8ece627090cecbd2a658bdf10f66c600eb. 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/ITZI71800087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927e913daa7b960184636881f85ff9fc80082ed680b35de86800b236fcb57719. 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/ITDF62377011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2418b80b0df5ef6a57538f147e6364d7e8edc7570fc6004daf5a374f587610. 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/ITDF62177134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7afdb45ddb8dc2a7ded6e763efa6fdd637c125ab109dae52b3bb7738d5e04c. 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/ITDF62177138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7630b0e97fa30d68a47e087784fb4f5d806449bf982780605670daa46ac059. 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/ITB002400497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa472a528a2e6a82d6c64d8f8d0647157b43314c24d42e05eb1b8e4ae5bc5cb59. 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/ITB002400500.