Skin Yard was an American grunge band from Seattle, Washington, that was active from 1985 to 1992. The group never gained a mainstream audience but were an influence on several of their grunge contemp
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 0x3a71a8032573ca0f59d908a14b4cd965e9b3ae112674ef1977bc86b051869168. 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/c4d58c24-e967-4417-896e-e928ffaaae55.json and https://artists.proofprofile.net/proofs/artist/c4d58c24-e967-4417-896e-e928ffaaae55.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 0x20ca1a1217bfe498e9fdf365cb15d10582a0631ca3e3f23f739f343002413b8b. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/US99R1200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb76332d0cd126f0682260d19b80277a675ce10e7027fb414ecbc4ebc0c15d4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US99R1200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90953948cdf021b2d80bd50ab15c89018235616862f5bb8576b9aaaa3e11465. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/US99R1200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca7e04c0084d79fab4ff10779f0390128c5b346bb20346bb9b56a593df006ad. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/US99R1200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d6bc981916e4aefc8676a6124ae31cc585ad2d288dc4200888a9eb1ab94612. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/US99R1200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99bc941ec93c5bd54c89bec7bd361d73a8d918dc75d9a4e3fcb613e488c4f499. 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/US99R1200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58c7af1ace98ae05568bbdbc7a6b4eff3fd973900ff8a7e33675906e47de8e5. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/US99R1200026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4330c958de35952f78c042ac9a8d953f120a16cbbf970f7f52aaf14c1e4f5924. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/US99R1200038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ad443ca231ca467033ec27f5b2b6a5e3f0f372d62b4710a5e784820e71f7f8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US99R1200039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e379718dae3cb0f820f3962e15e1197d581008705f50bba8ea9719648d8c4a. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/US99R1200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea20bcdfd82d0085a67e93d39494d564482de29a770a25c61fa3eca3c81d7e96. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/US99R1200041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b24ced30f57ec68214685a761cf70553008f0d875a6177a8614fc1467011a9. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/US99R1200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b6eb5c636eaf8bab46a30e187b028fdb580c1542c3051dcd495789261a4580. 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/US99R1200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943315767709af62be5bc7b49e7c4f0aeb46846e0d2f0a95a26fcff086548cdb. 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/US99R1200044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ebbee36da12ab9642a7e34f4d19a443df6cd59af8ef7c0e0c50a5b92b376e1b. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-02T22:12:38Z), 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/GX5MY2296052.