Kassin is a surname. Notable people with the surname include: Elmo Kassin (born 1969), Estonian cross-country skier Sam Kassin (born 1944), American educator Saul Kassin (born 1953), American psyc
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 0xc0c7ab042e8136548e8fee21a292868738d6164c3b26637178acdd288845a78a. 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/c3b5b466-21ee-4a0d-9cce-5bb885fe4aad.json and https://artists.proofprofile.net/proofs/artist/c3b5b466-21ee-4a0d-9cce-5bb885fe4aad.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Michiko & Hatchin, Chapter 1 (Original Soundtrack from the Japanese Anime Series "Michiko & Hatchin")
Michiko & Hatchin, Chapter 2 (Original Soundtrack from the Japanese Anime Series "Michiko & Hatchin")
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 0x99ca7b06049a81a5d0008ff630af20c9fe4c25d574b0e0ba801794d9d9497aad. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/BXGPG1700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085c26a2a8668eca81b9e9bcc369924014b3996680b132a549724337d2909988. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/BXGPG1700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb994dc2255af943b912b9cbdee9c8e700efd424a02cf0bf44a87b3728ccc6ecd. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USLB11810002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3460d313dbbb3251c5a245b1eae5c242557c1646686ed4f893df112e42dfe5c0. 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/BR3442000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27eba5413c5dc6a694b41900cfb14eebc9a839c45d99d2a3a397f02f63e71472. 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/BR3442000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e937bf786f5febe451f7b19818aa49afb0ef220dc912507eb327f53af0f53d1. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/BR3442000031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19b1c218775722e6a1e9c82f11a5768ff28666e789d6e3c845b951b6b11e631. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/BR3442300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f342d7f412783a77343b7c426975bceae70777d2d2c3493e93001d2d8d5018f. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/QZWDE2432989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a46cd6f75b47e2ee09e656e82308c35e23c8b2fbe42de711239d165f5eba028. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/BR5RQ2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d8e509fd85ce3946d1afcfea977662b450dce66724c328d19bc4d66d794fe8. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/BRI7L0700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ef3f743ea96f08cfbd2dab7ee9ff7b553c769ea52433d60a3c9c37d39ce20b. 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/GBMEF1600897.
Don't Worry About My Mouth-O - Interlude
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1f5f8c5e5ba6930d0e67ee17c18d9c7b3070d59db9171f8fd3381c766fab49. 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/QZH5R2000266.
Intro: This Is an Ashanti Proverb - Full Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d25ba76f24b92c729d52e0a8528242d407f6b974f4b371f391763ef6bdfc7a2. Chain 2 (Bitcoin): anchored in block 960303 (2026-07-30T20:11:13Z), 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/QZH5R2000275.
Interlude: “The Secret of Life Is to Have No Fear”
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33177cc4fce66885b2948c03a6ea8060760bf58f68e4cfa52a8156189e2806cb. 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/QZH5R2000278.
Interlude: Don’t Worry About My Mouth-o - Full Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b110dddab53abccdcd36c6c22d0df1ae4bfc6415743c882e619d32a4609927f. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZH5R2000280.
Interlude: This Is an Ashanti Proverb - Slow
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4673ae56a5a2fad1f1c2a6a70cad1b75398c51d8c1a0764e836125f90fcfcba. 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/QZH5R2000283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ca7b06049a81a5d0008ff630af20c9fe4c25d574b0e0ba801794d9d9497aad. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/BXGPG1700009.