Echo Unique Ladadrian Brown (April 10, 1984 – September 16, 2023) was an American writer whose work is known for addressing race, class, and identity. Her debut novel, Black Girl Unlimited: The Remark
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 0x4b7394eb01cac3072606dff995b22bf5ce78bc906da807d56909d48bb3b6f6a5. 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/4dcc92d2-2be8-4f26-859e-27b5fb25375b.json and https://artists.proofprofile.net/proofs/artist/4dcc92d2-2be8-4f26-859e-27b5fb25375b.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 0xc20df37d8051ad75245e30fcd3d18e996563b747febd231b81ac18697c40703a. 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/NLM7H2300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d43468d0e17da63a3114ef59f919accf47d846d157340d71697308b8422968b. 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/CA5KR2366903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252c8ec3e750bed71066572967a57b8773299aa6517d4d1eaa8062d47ee979a8. 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/NLM7H2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5453c4e650a50bc8fe17a4fa8adc9235756bf6f7588f01e73c754246d179e4e9. 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/NLM7H2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859536f0c83c23404d2bae6f22dc99e4d179384bbf1eded43eaccb103652cc1c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLM7H2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0548377bd8056979da7b2d664302691708cb62167dda0ea6fe001dd5395268. 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/NLM7H2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859536f0c83c23404d2bae6f22dc99e4d179384bbf1eded43eaccb103652cc1c. 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/NLM7H2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5453c4e650a50bc8fe17a4fa8adc9235756bf6f7588f01e73c754246d179e4e9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLM7H2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5453c4e650a50bc8fe17a4fa8adc9235756bf6f7588f01e73c754246d179e4e9. 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/NLM7H2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d7a87890f5461725022a3e84128d8dcae7c22d29f708067e9dc42d7f0af387. 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/NLM7H2100076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb69407f6fd3be314c4043a669262130dd07332b4b07432b89f740224dd1aec7. 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/GB8KE2156058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b03c682a2d0298571e6c14c8539cd232ac0670185b3f2fcb817b6347dad7d00. 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/GB8KE2156059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fd15806c87382f19675623d03118df6e2ed7aee1d3348f0cf0a9ce0f1c42f7. 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/UKEWB1600201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4de2d30ce8d61e51b08b1f4758b3b37be03f22c10feacaf17264e94021bd0c6. 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/NLM7H2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13e27a35ff6609a7cead3d63838ceb4c562896eb3e56efa9e0358119005c5fd. 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/NLM7H2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3042f0d27ae9bc1fd07b4d8e7b77bfacc8ac5af968bb2d73a775894887c6f8c. 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/NLM7H2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75205f0209b4f1cb4259eaf9b6ab64703107e3bf9626e59573ea5335b7973394. 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/CA5KR2133860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3042f0d27ae9bc1fd07b4d8e7b77bfacc8ac5af968bb2d73a775894887c6f8c. 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/NLM7H2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4de2d30ce8d61e51b08b1f4758b3b37be03f22c10feacaf17264e94021bd0c6. 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/NLM7H2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99145c9c53971c7ef77396bc9b3fb529628a18469ecc28a3821a7fa829a2e140. 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/NLM7H2000017.