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 0x73a5bbfadb3e595ee39165108151393c9282a6d6322ea3add6e1cf0b2c36d1d8. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8f2ffc1c-736a-4bc2-84d1-7129924af45d.json and https://artists.proofprofile.net/proofs/artist/8f2ffc1c-736a-4bc2-84d1-7129924af45d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Skario Kart: A Ska Tribute to Mario Kart 64
Toad's Turnpike (from "Mario Kart 64") - Ska Cover
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 0xedb17c964129c09596504a82e0b8c562da62e3aa8d523c01d5f614e196e5e8b1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZPJ32127300.
Frappe Snowland & Sherbert Land (from "Mario Kart 64") - Ska Cover
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a17965231587ad543e716a1fd6720104e51b9a22d78b551e2e9e3883f22d456. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZPJ32127301.
Mario Kart 64 Theme (from "Mario Kart 64") - Ska Cover
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835d212aa86de137ed91d2b2186fb7f6845ce54522fc6c3bf1994f49f63232ac. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZPJ32127294.
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
3 Raceways & Wario Stadium (from "Mario Kart 64") - Ska Cover
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224679ecefabb4f7e39804e69e9807212af690bffd70041bcae62a2851ef2c11. 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/QZPJ32127295.
Moo Moo Farm & Yoshi Valley (from "Mario Kart 64") - Ska Cover
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361a5c6228d3aa305d1205519f950f22b69c0aee3c8b99f4bd7ba55e774186cb. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/QZPJ32127296.
Koopa Troopa Beach (from "Mario Kart 64") - Ska Cover
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2de4a85df18bb064b04b3aed844cbf0adf92661175e309e5d043f118e2f4ff. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZPJ32127297.
Kalimari Desert (from "Mario Kart 64") - Ska Cover
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5eca3dbd09a68ad845ff1560519eb7c68e218e42ff9804ee3aa83ea72ea6966. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QZPJ32127298.
Koopa Castle (from "Mario Kart 64") - Ska Cover
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e50b7bd634aa28b1dca6c4b29fe9c33f410bcd139ef7bc71a1fb8e58ae3b12. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QZPJ32127303.
Rainbow Road (from "Mario Kart 64") - Ska Cover
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2dce47158f88f197c4304a6fe11fb1551033607d7f0b233dbc08cee55d6bb14. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/QZPJ32127307.
Limit Breaker: A Ska Tribute to Final Fantasy VII
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd140b416b3b2bc90e4e57631022535ee2c0b4e8c59b3a1f2864d4075e14020c4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZGWW2095461.
Jump Up, Super Star! (From "Super Mario Odyssey")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c45925d6a85806727d54f2054ad64650768f556396649c4843c12a581158b0. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QZGWW2095458.
Butter Building (From "Kirby's Adventure")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a086876403d2816fb8aff66c0b19cc073903c5f83c5305d9e746ee78b7f8085. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QZGWW2095466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d02db0f6afeb3981f326fa2e6802e67c841101647e0e1796d9691e0f7a30aa. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZGWW2095460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf423883e1313c2d06d8a8a6163e41d5005f476409608d65fb11d754367784f3e. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/QZGWW2095462.