Snowboy (a.k.a. Mark Cotgrove) is an English percussionist, bandleader, DJ and journalist. – Snowboy Interview at MundoVibe Discography Albums Ritmo Snowbo (Acid Jazz, 1989) Descarga Mambito (Acid
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 0x0ce7ac0cc8c2b82f1711b2a820d4cbf9d7678078fa84e1cd257b846fb960867f. 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/0412e23f-b223-4e24-81eb-a2285101c2be.json and https://artists.proofprofile.net/proofs/artist/0412e23f-b223-4e24-81eb-a2285101c2be.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 0xbc70cdcc184f184955deba6c5d39671fb2a09d2d8e9f88f0c6677c18e6e5f69c. 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/GBBTV1301898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180a33f7061982a9a87521af80b8e69dbb02aef2a47d19b8f9e85eaabfdce51f. 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/GBBTV9600089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b9c57ceb93050c35b2e9eb74d4e5c3456e85192cdce14a256377fc14aa9a09. 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/DEG931490985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd40736f9c16cc66170a9dd0dfaee2e34c0db492d1a39f1a98b4104e0782c4f. 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/GBBTV9600501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb44fbd50d560709038ac09868aeec7a2d79585fe785c363da3de19d5411c8c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBBTV9000508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4dc623c57e31bfda4d559fe488f50fb11d0af776bae68067f3139983e7178bf. 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/GBBTV9000509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1b45b76056978d63c272b85b305846094682933d7c0a05ba513ce3144339b4. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZAKB2135986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85d3ef5e64f3d438d7042b64f18f1af5afa72e830f6f13cae3cdc14182fe8ea. 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/GBBTV9300082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7640efcd37e638f7df8c35c8c01de23496cb8efca5faf63b66d20f7bed65d1a7. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBBTV9300085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926987fc9ff5c1452dfc4d2f49dd814b1b5bc66fd23bfe897ed1671adf1fb891. 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/GBBTV9300087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85d3ef5e64f3d438d7042b64f18f1af5afa72e830f6f13cae3cdc14182fe8ea. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBBTV9300082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f895669b34564183cad054151e5013dfa22a4a01a47f8ebd49925041402346a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBBTV9300084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e08dba8e8242e3cbd4adfd3d64a818ef391d3162d0e65f1cf018437a2c88d81. 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/GBBTV9000513.