HDX may refer to: HDX (Home Depot), in-house brand used by The Home Depot Fire HDX, Amazon Fire tablet computer Half-duplex, communication flowing in both directions, but not simultaneously Humani
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 0xa47f113ef631c8f4d7ea120f35c89f4675b208fbae72e58f0f5b9783ef7afbf2. 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/44c69393-ee0f-4566-b841-f4ebf63fc7c6.json and https://artists.proofprofile.net/proofs/artist/44c69393-ee0f-4566-b841-f4ebf63fc7c6.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 0x0f1675ca693ee0170036fad6eafb9274534bcfba8ea445eeff274145188ea3aa. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/FRX282290933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40edc535aa214da5197e3f93fa338ae1c3989577c60797c38c4042d4508bbc43. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRS182137286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e58f60ee3747f2680ee8dd783310e677b7d85e12512f0da3114d50c70b1405. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:06:49Z), 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/FRX282290932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556144e994c69bcf1648adbb6bab72828aeec850cfa166f80fe50dfe1c8c8cdb. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/FRX282290934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809f148476a238712f8c6fee47e0ffc8b0abe9afc4dac37860e012c343247cce. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FRX282290936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5999586ed978e91a782f80f893b72e04b8a4fb0f14d830d1029e2c69a42b9ec6. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/FRX282290937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f1ca63bdf7e124bd119693dd92a4075c1566b2cb541d4218407f19ba88bf77. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/FR2X42314711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62601984b5e9f240740e15bfff3c19d13bdd2b8001bda061e3167784ae16f770. 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/DGA072370407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0783863a160133cf3120eea30ee2c62009c41ad972bef8f333efee19fa8310f0. 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/DGA0P2300203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2571143639c1804e9ae7495edcc140dc6aebfb99d90a54547192a212c532567e. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/FR9W12531415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d6c150c68cde1808302fff0817aff0e2b08dc5b3113be9a31c8f7f1c4bb94e. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/FR9W12531416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65fc3f95bda5cba69dc420131400b93973262407515f05d8ea57c11ad2cbec88. 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/FR9W12531419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f1c7606836c68e50d5cc36da09b678dc21b23b1c96a178ceb558ee01bf480f. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FR9W12531420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a13b2e87667c909a1f1d835375e7d51ecf92ed645a573f2e3ce33b4e2bb2e08. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR9W12531421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10cabe32b9078f9302080a8b0c47b212db54c11f59900c306cd15976a0f6bda9. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/FR9W12531422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a9e29917b29992f94c75090fd477e3d7a9b57e653f1daa41de840fd38c517b. 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/FR9W12218366.