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 0xf6984955a2e213e68e567c639bcdb9c75fdea92f95669d20a2a8edfa294e8051. 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/cd83c5c2-a20e-47d2-b85a-c81d62066dde.json and https://artists.proofprofile.net/proofs/artist/cd83c5c2-a20e-47d2-b85a-c81d62066dde.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 0x7d6cdfa772a941407915f011f51f1e06f09f6ea2896f9a2509637f100fca7c8a. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/BX4E52442820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd349bf224ef9b57ef8294fbbd9b483a6abc984b759ed338f61b311f10255ee98. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/BX4E52442822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b10baac16fc96ae749aff582b7988c0fb0d81238be8d8ee960ef6fa8b622dca. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:12:04Z), 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/BX4E52442852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62a7f164df0582a5038e5157961924d59bad27667b45d458a9ebab29841c242. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BX4E52442853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5f151947510fa4c164eed7c3ee90451e1df7db2d3a35684925837df7cd1b35. 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/BX4E52442746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3a7ae94004351004b2506ffca85d0cdaf4c81e0a15e3668d310f4c28635b86. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:38:48Z), 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/BX4E52442751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3f5b4bb25a68b89d6ad1e8d04cda12f6d115a64d96df54835fbbec0938e6ce. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/BX4E52442752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1daaf38d2c2c41f7ce7fcd5a86c16115720a0644a59702e910332213a4d1680. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:55:49Z), 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/BX4E52442757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe73af3fb0f5908a9c72f27d69a60b0181966eecad913d46927d158e9f5bed86. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BX4E52442759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ae0b8fe1e86f87d79c32f9976821c24996a022dc5ca36ff4e29f914b5c87e7. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/BX4E52442761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897839f84ef8a6ccff84e2bd14d55274fcf9117a913b46e95cb5d0ab0f35bdff. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/BX4E52442762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90719a24e0136790138559797e34083cf2b3d282f9b3abd099828c974b241ed1. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:20:33Z), 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/BX4E52442763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea53d09212d6c8983c9fa33ead10d819197b2c48942cadde5249703e0d2c23a6. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/BX4E52442764.