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 0x111571389b6658b80a7ff55ff2e9cb1cf536ec84efad25752c469691bf92d3b1. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/48faf1e5-9bf8-41c8-bb38-d157334922da.json and https://artists.proofprofile.net/proofs/artist/48faf1e5-9bf8-41c8-bb38-d157334922da.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 0x6e63d1bf97122f8c73093870e3d7a7275cd3fdc020f999b8b6058cc35a4ba0c2. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GBSMU7453546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73d584708e9eefd07b71e21050b08de956a67650886a126a2dba46926b9f083. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/GBSMU7453547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6041bcce60107a29a663633373bf463e41b27bab59b3cc2ad60cb90de3807e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:44:16Z), 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/GBSMU7453548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd291706ad73bc3b4165d8ceb215c3b59a3e8a37f3c681e45d580a0fc85832ee2. 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/GBSMU7453550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6292ea771560e97dd5b06df8c5eb5d405c21b0b6890bfbde74621e81aee93393. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBSMU7453551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6faf628874e5789e00a74e09e615f9e3268dfff899fd099bee8db01f2b2e375. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:23:18Z), 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/GBSMU7453552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac872f705eb74b8e0b8cee580cb7974cb9cd22965d61973def526b1487dc603f. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GBSMU7453553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4482f877d9cc871c2161cb0816fae9cd83db74a2296b5b96433311333b4a70ee. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:22:24Z), 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/GBSMU7453554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922a1b6304442a80fa25e3fd70e2a0bac2a2e53f296e24e9bc632a24730ee6a9. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/GBSMU7453555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5df6c715ef23a066aebc1dc0cc9ecba2d0f0ea51d1c830254d03b829245cd2. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/GX38U2148978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ccd196654ccb97635564b03beb16e27721611cbae0a9180d6e17b0cf142f6d. 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/GX38U2148979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0199cd2553ad076419ae9b5584221fbe10b6cd228a9f873890702442ba941e. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:18:41Z), 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/GX38U2148980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ed2006b30d2a5c0af9437a0953526ebfe5623de5e4a97fec3a4c019a129bee. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/GX38U2148981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5043d63ca87575620427d4bf7942c798e9473f22202a22ae5a27d17e29fda107. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/GX5MX2330111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9c6dbead22dfbdb7c1e88c40ce976afc9e7e5a7aa523f071b6f1674c05ab36. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GX5MX2373093.