The Hanson Brothers are a fictional trio of siblings who played for the fictional minor league ice hockey team the Charlestown Chiefs in the 1977 movie Slap Shot and its two sequels. The characters –
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 0x2d16895c84ca8dd29787aa6687cebf103df5ad00eaac5f9c6450b3db68da0dc9. Chain 2 (Bitcoin): anchored in block 953614 (2026-06-14T08:40:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/14fdfdf3-9c9b-4e37-8cbe-527250a8d729.json and https://artists.proofprofile.net/proofs/artist/14fdfdf3-9c9b-4e37-8cbe-527250a8d729.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 0x9b0cce17f86564cc4d72bb0065707788ca0dddb930ec75c037482517d80b5813. Chain 2 (Bitcoin): anchored in block 957705 (2026-07-12T12:50:42Z), 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/CAMA10205901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fcb5e2395dc2bf886dbbe8adb2613ad95a775753a9348a856b1cb63cd65f730. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/CAMA10205902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09460a2c359e9c18d41f9af4c07b428eebe4ce3c85ec82f89301be0222b9132f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CAMA10205903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dfd1fc8f2b7ad61c4dc32188b67200fdd15356a226322d85f8aded4b5771592. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:40:46Z), 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/CAMA10205904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaeac2318fd4e31fb250d0772159fa58bee671e81f96e4ecb271cd725a352465. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/CAMA10205905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f808a819d1adff9fa09439e12d024797ea80b4e738d8b39b43e2e573ee61a58. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/CAMA10205906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc375ad62045fb851c765578e835e8b7aa03c8303a596a27ca6cb1d7b044d9cf. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/CAMA10205907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3431837f26d7db7f72dc25a9f2b7a338f330dafeddd1ba945862c8958f80f3. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/CAMA10205908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93b25d2a7f089c9f3ae428f26c8b2808377a3e40d0d49420d8e27707b8595c2. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/CAMA10205914.