The Trail of Tears was the forced displacement and ethnic cleansing of about 60,000 Native Americans of the "Five Civilized Tribes", including their black slaves, between 1830 and 1850 by the United S
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 0xf46c195dee886f3903bc17ecaa8264bfa23230919326da29917fa5e3f5ece3c8. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3fcb5a6d-f2f0-498a-903c-c08c3e28b38d.json and https://artists.proofprofile.net/proofs/artist/3fcb5a6d-f2f0-498a-903c-c08c3e28b38d.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 0x21c35e6b764132989d2be7228a9e98f6f47fe3bc9fcb2ed55f5df9647ebca116. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/ATN260008402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c418996cb7b5939cc46ada2221b0bd96d892e94bf0c16a66abc40f7c057bce. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/ATN260008403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf751ad384ab51a84952587b384b6675b0a037750e6471227ee21c86c56202a56. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/ATN260008404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e3f1d4d51284e041426aed698ef0394fd9891e1c1c0f2605aabf480ac03fea. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ATN260210801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e8c81170365c62fa02ff0d388060d3f9d448191f1800e37d080943201252c6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ATN260210802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365c81333b485459d6e43da847fe671d7f5ef87132b3e25fc5bc18970714708a. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/ATN260210803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe1ed4eebf21cbe1547591b1574ebec40ea52b561e4a2eb1eeae87a610a12a5. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/ATN260720301.
Once Kissed by the Serpent (Twice Bitten by Truth)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9442a5ec536625d969ac1a63aded6caabb47fd9c42b7dba7437f347bc465f8f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ATN260928002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d4e27e788a5daa4f67c0d0c36532a82d2be289b9ad380626563d3876c213e0. 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/ATN260928003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7cd3c90b89d7438cf6ad651dc79f34cf2e26a689d834832cd49151039fb2e7. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/DER371381803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a63fe890563c501420f891aa8712bdfdbc2d377c176295a27d595040461dd19. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DER371381804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca6274b76148507f159ecacee435d2768f102df51dc6f6702824a8328d1a523. 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/DER371381805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f026c731803ce2c4f228e2e20a1ec0a977e835aa5fe372d662e8383593f500c. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/NLRD52403530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4164605cbb09fd1fbde1384c1fc95b988f93cea0d28ef56cc454ca35851d7132. 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/NLRD52403533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5419c59563f5b605b05081cd434def8c831109af6407ad538158f12c3f80a673. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T00:53:33Z), 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/NLRD52403532.