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 0xde97ee8d5cc094b95a4af3730c319f3c88a00df91ba734d20098e7f704cc0309. 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/c84e05c8-57c5-4d72-a98f-e8c4e372760e.json and https://artists.proofprofile.net/proofs/artist/c84e05c8-57c5-4d72-a98f-e8c4e372760e.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 0xd2052c7db7f01cfc24f0d65ae519bc92ae0378d088c32c341d3f58e8b72e8a46. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEAS80700047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1ecd01410334b32c95fcffab04c3c9abc02330f5393aaaa38118cabee7ba16. 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/DEAS81400206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad28fb1de3673ac2151f015cd79c4e151193794865e5e2823997216460180fae. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DEAS81400209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66aa24d0e07e497d7db7c394aaff1bf5a49b45c25c2b237e133b78f8fded5100. 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/DEAS81600109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820ced10c581dcfd6b72a4afb34af655bfccc6c81ca890da8cc13b917b3ab050. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:59:12Z), 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/DEAS81600111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2d734e37a91eb25476cf007e9923cd6c3afe5a79c5d4a4230cbfd5ff301486. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEAS81600114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9fdad541364a7e117058a9bf378c29699eaa248cc2dcd4a048634b87786eb35. 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/DEAS81600115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5416a101497e8ad59d25a0860c313937a454208ba2483397087ca38aa4d2d2a5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEAS81600122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdadc858a6c7a23cec22ace86e7dd0c96dcb3554ed2f54b7ff36ac7ee70b3d97f. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:52:55Z), 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/DEAS82000053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f12e1a3fec8115894f58a11b833772e5ca74673eeeac79c60151446656cd5dc. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEAS82000175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c921c38d6fb6c9b16a4d9c3adfde4e9ef69c102f1b16c1759cb84fb9f027fe8. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/DEAS82000253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95fc6a539c48922e44dae68a6eb6ae1ed7853271abeb24ba46bb61f57be7b17. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:45:08Z), 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/DEAS82000250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0de44ea5da73a7bedf23d1d55361591493878d4044a55e1cdf144340de28910. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEAS82000252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76844bf3d320dedbe9c471ef03f97e64fc1ef9ab4594620f538081b0be882228. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEAS82000257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad206416036f765ac2af267d81c99be74fe9285154a24956048cd148fde218e. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/DEAS82000258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4670197a4ad83ac3b996d83848b4dcb23395ef5660ca521b8e96ef3c43e7aa1b. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:45:07Z), 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/DEAS82000387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3afbbebb84997ebc2eb9a90f3a81c7a8d3b052d61e74056d497f9f4e57fc5e20. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEAS82000389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39cff083461f8b979c508730efdaa068bd7c0ae171d0313c48e92f0a1a9e4b89. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T18:00:34Z), 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/DEAS82000390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb142ce5ed25edcfe9c7772a2d2f60c2b24b96119e24e8c060ebf61aa574096. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/DEAS82000408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68b01b587faab65c0b977fac24661aadf0e82c0d49f0a92479d26d19f8c5891. 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/DEAS82000419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb7571fe968e5aa87286ae930a03e7edc023e459f7ceaf0d4678e6f716a1a79. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEAS82000468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdace9c7eb3ceb93b1a6099c040e6da3481e26486935fb496172369b297daa1b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEAS82000485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2602dc5fe3a714b9037a4ccc16378d258f218c0661ae323ac31a6e3299231c. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/DEAS82000779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f12e1a3fec8115894f58a11b833772e5ca74673eeeac79c60151446656cd5dc. 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/DEAS82000175.