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 0xe24d2eccc4b8492aef06d851ef39e6db5a9b0008c08ff7abe457ae98633ca481. 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/cc1c6728-96bd-40a2-bc18-2fa0932e4635.json and https://artists.proofprofile.net/proofs/artist/cc1c6728-96bd-40a2-bc18-2fa0932e4635.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 0x9de01515d726b97f6b335500fc1d258f3cffa796fd7354db53f70e5a79ab1945. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:39:55Z), 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/DETO42022481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159162a3727c8c7a06219d8ce79893a323213aab369d70ea98c040bf8a4735a2. 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/DETO42082323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946f0a40eb92a7cd1ced1a648bcbeafc5a84405dfdc09ae96f1ca1e5dde3f12a. 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/DETO42190361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90691e768519e37ed899adbcb48be5bb8709d94e5b2eef34ac580b64be029d3c. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T22:41:20Z), 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/DETO42103583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185336503e0080945051a7717ae2f68759de37ab006d5f48a7dc1be98b9071bd. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DETO42170645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7887b1073921385f68f17da2f9bf86dd6ba8ae872d17ddd8dfa9d0179e0af89. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:56:29Z), 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/DETO42301100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76bae3645eb45be190b9c44ef3bc9fa8de44da93c90c247f0544612fe55cfaba. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DETO42270250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd468408d23c61f5a481267aa59b5e935349e0d0705b5998c134e86eea8c4c679. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T16:02:54Z), 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/DETO42230558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x250cd5110fe8463a2352d621c765d10c47255c28a8b92f5e6e719083cffe63d1. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:35:17Z), 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/DETO42373340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb446062fc686c57e5c1f8706f4b2e6fa5f286ac0b3699b422b5f57863fcf61d3. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DETO42325766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967f8bda1785b065512179ac17ab8fb6e5af47f3233dd367ed6b68f00db86eb3. 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/DETO42301520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12430b29a1ab5da91098bb03baf5ac7244bf84ba40aa2c2db4b7dba193b78bb. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DETO42405967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0289c89606862a6ec2b5321eb78d9d91d7f019a693fac02ae322fd9fa74c89c9. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:05:40Z), 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/DETO42405202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1a08694321e1b7e81b21461b8275a94b1060bbc4e5f0ad2a9be8c8a1b3523c. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/DETO42468668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501e709ce2f4ea627634d18a269befb6e4dca548a8ac025e6ecd47b3baed3857. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DETO42458069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287c2a254c9d31e1072bcae39aa324486a604c645b980a271f17b4bc863556ac. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/DETO42490811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684623808e11cb32e3bd2bdfcec34ea60202c57cb21855520fe893c4c8267919. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T19:53:02Z), 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/DETO42460676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf543c2a5bdc265e5b3b842025d8b4f8c796ddd9252888869681fc958d2e167. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/DETO42538583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27dc4546ecb8b305aabec1ad7e673199bac2d5b601940d75ad0dd52200e04283. 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/DETO42580979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d213ca350730e5a7ca2e39bc88053a6c0da91aba5a9ac47108cfdbcabbf2123. 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/DETO42549187.