Yaakov Levi Robin (born 1992) is an American Hasidic folk singer based in Huntington Beach, California. He first gained attention as an opening act for Matisyahu, and released his self-titled debut EP
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a38e9b6da18479eccb499a9ac959ae7a45c9e67b550061310dfed49485ab8d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/abc643f4-a89f-4b5a-8e4c-7a095da9e183.json and https://artists.proofprofile.net/proofs/artist/abc643f4-a89f-4b5a-8e4c-7a095da9e183.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a00162aea4b063e70f218e6b420ad328381061cfdbc0a8156eca6fb3d47a14. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/TCABM1302024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93489d6894afaa4057a98aaca3569db870ccdaef2b24d7fc9bf430165c8aa0c3. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/TCABM1302026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc43139f8c93000cf6860e174cff4b6c526a352319ac6ee3f991f74d46106ba. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/TCABM1302027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe465491e439675ee0a246510ce2351ad5cb061a63c450daafa6fd76f714a6804. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/TCABM1302030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b5341089024bfdb0a2a7deb0cfecc6712dcd7176578b37d25b2a987342cbc5. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:19:28Z), 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/TCABM1302031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904f86fcb280a81d43aed5e97082ccde1478f74701f1ae6c58d126ab3ead3f24. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/TCACS1606259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841fa9645823b353f5b42c97c39b1fb26dbb2140e3ddcf5ecc0ccb98e16b5d86. 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/TCAEQ2026375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75f61b80e43e0812adc45632c08c21b0f8aa459dd35271a132c07f22857de58. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TCACX1779842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08be72704faa5e3920cf22fef88e91867ceb964a91e652757e0a1e781e9f0f92. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:11:11Z), 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/TCAEQ2064788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904f86fcb280a81d43aed5e97082ccde1478f74701f1ae6c58d126ab3ead3f24. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TCACS1606259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb820493e6072b94bff5aca4cf7d794f6ad9c15b2c2b35331b148250aa9a3851e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCADI1734083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05494acf116f95b1485336fa13889e71674ce82b87a84fdd2a6bc65b90453e96. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:00:13Z), 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/TCAJW2529634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6b65613618f7074fe42ea010ab67ff594ee6d97eddb8fa6a3683a4bb7dc24c. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/TCAJF2593882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c509b52e1e19dd79d342343de1b6e7586ae1fce069dccec0847f600eb4cc92. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCAJK2510601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a360c1eafb4b83d426ed6fe68ed11e60e6021805c229033ae16b19645869e3c. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/TCAJZ2597067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af5786d4ce6d3e1952b43e8d8930bfc63083dcd43be2447e2be71cbeadd90db. 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/TCAJZ2597116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697f9f089016ceba4e5110eea0bc78a21fbfd9add4e2c6025b0069231ba73028. 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/TCAJZ2597172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a5fc563cb239b57d0c7a881ca664c5ba691c27f249d2e4b4c11d3f4215ce95. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:44:08Z), 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/TCAJZ2597211.