Saphir, meaning sapphire in several languages, may refer to: Saphir (band), a German pop group Saphir (rocket), a French sounding rocket Saphir (train), a German train Jacob Saphir (1822–1886), R
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 0x9be58ec7e61b4b2cd70d68cace2ee2ad1d90120aa49c5fb87dbb005ed90c8d30. 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/52d285e3-ad9c-4eb1-99c5-13c281111482.json and https://artists.proofprofile.net/proofs/artist/52d285e3-ad9c-4eb1-99c5-13c281111482.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 0xa6d4b74b3539a9cde38459dc9075fbcbdeb1d0e7e602045a1689aec108551e75. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T14:12:28Z), 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/QMPKX1852488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af60bc0eec25e8ecf99d3a9855f6fe05a082479453e3d58c3b0d869b56b79d0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QMPKX1849391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc6c934ce9037bbfb73ace96a1ad9a4be4203d8de6a052342572eb4d53f2bfe. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/UST8K1815814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ae6e3c8adbbc1470791fcede31ced33ce2eb984f83001f4a11795552a15b45. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/USX9P2021926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05e6600383fe3166b997da9cdb6602c6cb93fb177f82a65c0a5d8179b57ed54. 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/USL4Q2159404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeaf933f5034871b322936d4604f8fa52537d4b8e0f6c38851f50adcceff3085. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/QM24S2302116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a6bc98b14bdcb4242392af0c5bb2910214c6295e99b5e68d4765ec5192771e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM24S2304772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b856d845762929ed0c1fcf514ebfeba787f9daa6405bc915d8b3e2b636e2be. 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/QZFZ41941396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308a24fd929377dc3e25a351f2d5054bf38c31608c1660fccd5c68ad58937612. 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/QZMHM2236370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53928cce137c34582c0316b6ad0a03d6723cabee836270867feffd4c2340899. Chain 2 (Bitcoin): anchored in block 957057 (2026-07-07T15:21:38Z), 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/QZHN82355733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be74d2f708994d3d87dc3c9b9f9e82abfa0807b87c9f69f95e1a1c6535875a0. 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/QZNWT2495254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6cb24208a204aa5ed5d3df250f111663a8dd1be9abed41403b63fa052289a7d. 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/SE6A92368571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60758ef02c520dc76402d0e9f8149fcbe1fb93ae8e39e44ded6d02127fede04. 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/CA5KR2363165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa040ec1a6bf83d9e89a8f8f810be0795d4d313f85c22cc48dea97a367189c32f. 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/QZTGW2401201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992bec22fbebde21dc01e3e48aa6fffbb4b403423e23300145af3a6456622896. 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/CA5KR2417287.