Sevi may refer to: Sibi, a town in Balochistan, Pakistan Sevi (crater), a crater on Mars Sevi (band), a Bulgarian rock band Sevi (singer) (born 1983), Bulgarian singer Merve Sevi (born 1987), Tur
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 0xe9d594c7249ab148c16dc8540812cb42288bfe89baab01791b175092499db425. Chain 2 (Bitcoin): anchored in block 953612 (2026-06-14T08:22:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/17cc884d-e19e-491e-86f4-6727f09c38a7.json and https://artists.proofprofile.net/proofs/artist/17cc884d-e19e-491e-86f4-6727f09c38a7.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 0x4e8de6b94dd339e6ea8b5648b2bb6d523472e466c8c70774df40c51c2aec79ce. 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/USL4R2336264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4491bbfb9d3aa14adc98bea2e481580fb2bed1bee3202752abd975a4750158. 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/USL4R2336265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b684c515a9566484c120c6c297a93f5d44ed52882a39025362baf4972ee773. 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/USCGJ2047447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1af17a9e71ddf4b0ba043ce3b20c89a29a4512526ed5466265ee6d3d77e24a. 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/USL4R2336266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3fb2ddad7f26d20db4c31b0361840165971de3de0a7851d2d76ded27404456. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/USDY42166354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb752801953a21f61bd8d050978b9694f1c988c902079840f68beec4476837bff. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/USL4R2336267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59bbf2bef5eed03044e0a7012311f97e3ade2399639b993885ad27d4fa753d0. 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/USL4R2336268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fdcce165d9bdc093f01a270879fbb8a403f0bd1ad4094e09f8127cbef2bdb37. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/USL4R2336269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb527b5e3cd983e85d1155b4a479fe8c6069cd7266ddbe761e980ee427d35004a. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/USCGH2277537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a100836c3782401876e19a1c76988cab96abfe68217c092e098d1a2b222fac. 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/USHM82241436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb716dc4955a25e0365b41b2f25952ef62f209f66f7966cd0e969aa6630ebc86. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USL4R2336270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c3fb5af5222bcbf02dec32a716eec6e0809beb695948fb72ee109c6bad235f. 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/USL4R2336271.