Colin Chin (born August 28, 1961) is a retired American professional ice hockey player. Chin played 11 seasons of professional hockey, including 10 seasons and 660 games with his hometown club the Fo
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 0xb396402969bc2e7645e750d3ae7b86159b3d9277dc839b1b810a67663d5815c4. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5f109a1a-56fb-48d0-a67e-c55eb3dbd32c.json and https://artists.proofprofile.net/proofs/artist/5f109a1a-56fb-48d0-a67e-c55eb3dbd32c.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 0x2c512af703620bf9c41c4856265924a874548b01818f1fcda2d4214c1977915b. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/USNA19014270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee02a0f2c2a7f7235277ec166e79703a3388b6bf1a8d3430da255a4e89862372. 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/USCGJ2580443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7b1126ad918fa1b102577c9fc44ed04d6dec519d4a709bccdca7150cf7a4cf. Chain 2 (Bitcoin): anchored in block 959110 (2026-07-22T07:30:26Z), 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/USCGJ2580444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c87e537e9bc42c99ac0c94f74597a9503b033f0752c06cba6e0b9afc234442. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/USCGJ2580445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ceb3f082a5ccdcfe7170d511a7de2f57b5e2abbb1b76b1b4ba4decfa331d9d. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/USCGJ2580447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbeb4435b1ca7582825e9f0042e60b7aac507846e8a10e07a06f5f69683aa74f. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/USCGJ2580450.
Narada Decade (The Anniversary Collection)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344bf037d540433250b6ae6edd02118fcc1666db9a264d488d6c14890264ea4d. 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/USNA19312017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1f1a488bbbc4014605d47446e4871bd64cd1784e475435b3ceb4827201afb2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USNA18912251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f1166280012e3f3a1fe5f8d04c9259c2978ba4bdac1051050fdaea32c99315. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USNA18912253.