Casper Skulls are a Canadian indie rock band from Toronto, Ontario."Toronto’s newest fuzzy, buzzy rock band, Casper Skulls, is ready to bust out". Toronto Star, December 6, 2017. They are most noted f
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 0x0cf9b9b35c76a164d5d0c7b5db6a5157e13d5ebf5559c234c978a1d41a53f499. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/92848967-5818-418b-929a-a9bae7fe7293.json and https://artists.proofprofile.net/proofs/artist/92848967-5818-418b-929a-a9bae7fe7293.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa115bd4960341f84adc46279e3dc0d4230b57ade5bb0a004fbfcbcc4e439d00c. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/CAO372438501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741e99e3804e87d7482f0827bd20e095db9dcb040dba0c5fb8db4f85cf8cd4e3. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/CAO372438502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa115bd4960341f84adc46279e3dc0d4230b57ade5bb0a004fbfcbcc4e439d00c. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/CAO372438501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aaa56aa4a6178d50634a6761b41d1035a0cd975f9a733affa9fa8818ffcedea. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/CAO372438503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02bcfa8bb022d935d6d3fdaf5e9e33420c0753b5c740f653c393710ca3c15c6. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/CAO372438507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78bdea508779d767458fce0bdcb7cdeeb63ff211f35b9529118898d365c8ef6e. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/CAO372438508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5e37874ad7e408974b8b633be15540ba1255a916679808a81c8308a78b91e1. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:48:29Z), 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/CAO372438509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8604cb62434c77aba1122b416d80c11f7367f7272507c9ca4c44e8443154d5b4. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CAO372438510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6113f851818a9c400d55ade8392deaa24ccd7eac84cb0e005ed36ea9c34841. 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/CAO372438511.