Danger Ranger is a non-scrolling platform game designed by Ken Kalish and published in 1983 by Microdeal for the Dragon 32/64 and TRS-80 Color Computer. The game was ported to the Atari 8-bit computer
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 0x87428b158c905fcb9f6e57a3cc5c7eb7d02ca01ff99eaf406bad7551f6f194de. 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/d8b12e13-f09b-4797-b256-485bcd355abc.json and https://artists.proofprofile.net/proofs/artist/d8b12e13-f09b-4797-b256-485bcd355abc.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 0xdd228cded361615a44d5c367ad1428bf79c4414820c2bff1430df0cf0b99bdc5. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCACP1628777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eea090ab9a5e30799a8f791996344926118adf74321cc828c25fb157d24fbca. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCACP1628778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd513c486dcabf85bd7f34901b67426c656991a3b4b01fc339b06ca1b1b3d91. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:17:05Z), 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/TCACP1628784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe0036aec1b0db5286c17bcd4456adba684446bbb144ded9f3fe89fdae609d5. 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/TCACP1628785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6483373824dc7c1f6234d9697e9311ee5c7ca989975db30ccb9a3093a07320e0. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:06:48Z), 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/TCACH1547735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d75364fc6550c56c7dd9298e9075e57e1224d7a9bbe9cf2873d25e9326071b6. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/TCACH1547737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97070e86a44d94f55cb9d52cbe666eb312f4e0800cdc374f32c6cbbcd4934ee4. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:25:22Z), 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/TCACH1547742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c977e971fec22d46a4e4d90c5de636ed7a2c32c8af5b551230626f971488023. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCACH1547743.