Joanne Brackeen (born Joanne Grogan; July 26, 1938) is an American jazz pianist and music educator. Music career Brackeen was born in Ventura, California, United States, and attended the Los Angeles
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ba1c5ccd076d4ca239f9d7130f3551d62be9cd84be8b52adfe3d79877133b3. Chain 2 (Bitcoin): anchored in block 953616 (2026-06-14T08:58:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1898a345-3440-4958-b4c1-28f75d02e05a.json and https://artists.proofprofile.net/proofs/artist/1898a345-3440-4958-b4c1-28f75d02e05a.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ecdae7b465ba2f145b1d38b415a43d131cc9683fb4bd67ed2f8bcf7be58f0e1. 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/NLA417812301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22c9fc2eaa85cef2e4bad742b15e0b04c61c3362b0bbae19f508780280df0a5. 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/NLA410813527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9881b81018889dae35e7e086fe4abc3975edeb735307e35891efa7a37e84fa6c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USZ6S9937101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73911a887f1d50b8636d6d2c112cc2377db46babaafd25c3ab3491254f2f82b9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USZ6S9937102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c4878d5bf58f395fa844e8b622219dd9f647be89328f96c43488c79330c782. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/USZ6S9937103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e5926a11d871489d8041acbd9f21dd38c8f0b01e72fddba567ef8b2340d661. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USZ6S9937106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f393695d45e2672b05e29218c45741617576f43e78e7869946274fafde3aec2. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USZ6S9937107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38178e6e9c886f99f7750749443c04a15fb5ce74c37539a891307439ca50c22. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USZ6S9937109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ec261d2d7d7cee9ffe41598e564ca42726422e4233f08379292b0e60f96a00. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USZ6S0037307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0359b31b13171eabd3597b6683b205cdf6625f3808e0d7dd503c357ec225a4. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USZ6S0037401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79a36129c8cdb1c8e1c2a5385b0d58f52411c2e2b8b593ca3c50d6baf8ad20b. Chain 2 (Bitcoin): anchored in block 960355 (2026-07-31T05:49:18Z), 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/USZ6S0037402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d09caaa814fbf1ec3b91cc1659f1c8a93e8dd131cf853f9490700cf7baa561. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USZ6S0037404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3374358612f23f0b0290dc3266a64aad5abc3734af7aa12a6323e2e4298d88. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/USZ6S0037406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554cfd7b2677251df427367aa7353434033681e7285b28865c018e982cab0266. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GBCWU1303276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd148126c040bf9ccd1b83990f607c37492106719ecaa96b59f2da729e2308da8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBCWU1303279.