Mumsdollar was a New Zealand rock band formed in 1998 with Ben Claxton on lead vocals, Dave Barr on guitar and backing vocals, Tim Beale on drums, and brothers Pete Wood, on guitar, and Steve Wood on
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 0x39097770eaf7dcfe1b93d3f22ed399f4f4ad33e5cf35779085e99c0933f6a1ec. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7a3884d5-2a78-43b8-8275-e08dba339043.json and https://artists.proofprofile.net/proofs/artist/7a3884d5-2a78-43b8-8275-e08dba339043.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 0xd9a0c989f4d258fb4433326102ea71b324d78f4142b307a9e1fcb2c3d1ba3b66. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/NZPU00500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6542f3c06b687248064fb84baf8748ff8589c0db268edacaab76c05c2d6cca97. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:59:58Z), 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/NZPU00500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1853df67f78e9cb6a379ce4560e0e45876d1a45752ffa320a3d7a4fcef2cfd69. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/NZPU00500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c808d3d2edb38337040eb4d10c36fc766683ae244c51c9617aaeb9466cf7f43. 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/NZPU00500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3a5791248bb1ab874f816407eac747acda8ad8d6e8805a7facce9aa25b786b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/NZPU00500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33f53dfb7c94326e9c93ce05a51be4a3803831a412545ee305b0e5db37dcde1. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:53:19Z), 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/NZPU00800031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25b6abb660830d651f3236dc5ce733a289df496a8ae07bee9d159c871f6f167. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/NZPU00800035.