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 0xfcc1c16477c17ea44dada9e6f2194934cb5f9afc8ad2939e6c6e0cc1f3ae6b06. 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/a7949851-3ec4-49e8-80dd-519d48dc2207.json and https://artists.proofprofile.net/proofs/artist/a7949851-3ec4-49e8-80dd-519d48dc2207.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 0x49a8f38a83b4183bef1820d3e73d38bbc18ce1fba722876b3f8071ba9c5d3648. 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/TCABA1176870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df04859a9e6e5d426393c011aaa1fea5e189a670047abad90d56f8e53259854. 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/TCABA1176871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x807ebf184cfe1c0df52f7a879b29be5560a3adfce55174227ab17eb6dc216a67. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T11:20:43Z), 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/TCABA1176872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfe295a8746bdb67876d8ae234568460aa91eb4fdeb9a0068144c27ee4194fe. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TCABA1176873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb491708e3798fea372a8c8417a3648e5944a597211281d1253c93b8829ffbc8f. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/TCABA1176875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2fb7a6e8e3b6a2e82553eb6bdc23278fd01210d4caa5532926037c3f40c2fec. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:03:43Z), 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/TCABA1176877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e56abbb0a6fe6806ade09d6ec78fe6d6425f6838abca8e511a39079f29cfda7. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:52:20Z), 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/TCABA1176878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332e7b4a1673db09e5545948862b5b1da54c16d04606a2ecd414eaf487df50ee. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCABA1176880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564cfe5c54fab9072f07ac5eddf73f92da2729bc7090c9ae3081389c5a2a54d0. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCABA1176881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77abf3e136295b95048cd45581c931938b3287fafb030fbc6bbc93b482030750. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/TCADG1789194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48779da7d36eb2722ef6a44dcdec84dd9a6b822fb487467f9d05cc173a438fbf. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:46:45Z), 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/TCADN1885504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36adb199b335863c027917c275b6a1b807602237b8b07ca659376eee346dee6. 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/TCAEB1956878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44bd2d5393ec118c81f74f9fe964d0f09cdeb730d906628a792dd672b3598d43. 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/BEY921907230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf979913ccbd48a14e9f1919ba93ddeba6ea4f9121a816f114c140744029d17a1. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:18:40Z), 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/GBLV62212142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdabe28bbe66b89ce7feb1b94f594b70e156aa3b100e47b81a4fe8bb3725deb1e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAIZ2455681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62346bc64f59500f0e44bc23d7c8d10360e76a48db71f2613b57c8ab56177f14. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAJE2507773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b31bac35f80b6803df5d17dd9fe7f48210c5b777c77191ac3b465871e9cf1a. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:41:35Z), 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/TCAJJ2530153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e437fa5f3bbec04d4b7e27cb6ba7097b9b3c09c659d295e9d980bf32c14be1. Chain 2 (Bitcoin): anchored in block 958677 (2026-07-19T05:47:23Z), 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/QT65W2589690.