Harold Floyd "Tina" Brooks (June 7, 1932 – August 13, 1974) was an American jazz tenor saxophonist and composer best remembered for his work in the hard bop style. Early years Harold Floyd Brooks wa
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 0x1d0ab14a3250be1e03c48367eb90d164dcae2b5a565ea54c3391e8e1a3cd0030. 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/6a3be537-06cd-4c21-9789-0c080ca9973e.json and https://artists.proofprofile.net/proofs/artist/6a3be537-06cd-4c21-9789-0c080ca9973e.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 0x25e952c953af75af3915850aa9d2749bdfeb7a31825da3bd11429ddc715d857a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DE1A42141964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2234ac5b6002bfe0d18e9353a9b6467272c2cef62859062cc3fb10bb2f9e4abb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USBN29900855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd207c22bcfb78e4bd797e369333a86c9a9b421266645f70acce96a5d2538aced. 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/USBN29900857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7b06ef6004bb382a022f368d1d669a5b450cdf205bec328810a62e83db715b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USBN29900859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc675b16ecf9ba6a27b3399c7de64ec57992636bc4dd8eebf90a97572e727c85f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USBN26000124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78dedc50e3fb57df6ecbf3899e99d9586ebe1c8a897c082bc81ad20ffa6cceac. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USBN26000062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4abcab97343339a77db459081addf420353b66057f46969a9935d78f7e39ea68. 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/USBN26000127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c15cf2092dc7b66565cf628fb178379af0381e37b30b0f7c016cdf210ab9d2d. 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/USBN26000128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da86f195e7cd811c01949b962fbbc582da9c21a5626f9f694514f93ec3e349c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USBN28500132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886ecafede5f11a8cf68b9091e27fd3a740a874fb73a64435f424fe63c739d10. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USBN29900964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa2df49ddd64ccdab0d711a851da2e2e658052a0950453f7aae23846f8a37746. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USBN29900966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e14fdd30fda5f7e720cfce005e7e0a1967e127629f7a5f129e4aa1be43d32d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USBN29900967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2bbe79da3647c4e463f7bdddb113ccdf1f982bc40356e0f2dd14709d5786bd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USBN29900968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84e77d95f0eabf59f52eb3bd5510e69d346be15e7c8acb113355103375fe27c. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/USBN29900965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ded5727338a270eed86979261ffccc39ec4f0331cebc1d871f0ab34e44fa4f3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USBN20400503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b975c7ea37a1903af207ec171d79bf6f92722fe1b400bc46fb71b0a4459571. 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/USBN20400505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857ffbb6b75ad930ab5d27a3d7269fb3201da8702dd69cabe1b4157a4c2607a9. 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/USBN20400506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd802f4988edb14775054950e9a709ab6229a8ab58be8e99b71ff91f41a42005. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USBN20400507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5249547cc1cf256c26957cdfd8af485233fd30ec285d75180e5d2b3dd6acbfcd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USBN20400509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd694506d664a258489e4541a2494a09ba031d787e51513c75f90c2be26a5507. 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/USBN20400510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e12ca3f30cb08dc57890c7fd302b4fdeb6387da97157ef70ae631b9b54c53bc. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USBN20400508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c7251487c29c949f373c4efc8f059bd7e7810af77b9b5e0f9b6062f11ff050. 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/USBN20400504.