Die Spitz is an American rock band from Austin, Texas, consisting of guitarist/singer Ava Schrobilgen, guitarist/singer Eleanor Livingston, bassist Kate Halter, and drummer/singer Chloe de St. Aubin.
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 0x99add437899b2b83c26b425b4a98d917740d45b9964474f75c0d16796624a9b1. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/63bb6ba6-261d-4c56-a5e2-b59cfcc1f025.json and https://artists.proofprofile.net/proofs/artist/63bb6ba6-261d-4c56-a5e2-b59cfcc1f025.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 0xefb100ae760146c082714102e1b4c3b5d959bc4f2668e0ec3a5d4c37a262342a. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZK6G2293706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156326a91c156d567483dae0370837666adb491cae550daabc8fd903fb8f4045. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/QZK6G2293707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdbcd4abfac58901a8d68813b0ee799e8140736a166c8474d96f717454f7743c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZK6G2293708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0976b2366a2ffd11051b85d1f9d89c3b6bb3ca28aaa55e97822b6b9ae35d43. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:48:42Z), 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/QZK6G2293709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c4f5b3c981192cecf75d2adb9c0dae36e4781e56d678d942fe7711abd40c66. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM99V2314502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ac10d00bf12b61ab89a478aea967eb2ea711a01c843ce36c1e6a674e382b88. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QM99V2314503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f57e55fb107d886823ebfac7cff6e2eade9d182d194b633d2ea4345433a8ae. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:41:14Z), 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/QM99V2314504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76791d2ca793894f1040afc7d17011a4ba65ca11e17f4bbccf86ce5ad9f5b072. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QM99V2314506.