1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x77fbd2aa938d71f1a6ec2132016eec3f4ddda59ce6ad9fed408f4a7b1ed359a3. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cdca1c77-8309-4da0-b386-5aae7dd5f62d.json and https://artists.proofprofile.net/proofs/artist/cdca1c77-8309-4da0-b386-5aae7dd5f62d.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 → block OTSBitcoinBlock must exist at that height 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 0x6757638f89392da970139f4e51b8e457db268a8ec51d982fa6c8b8c2de42c59b. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZMER2086189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86613769f5c9b89510faa2b3e8361b123516a292901e36e78ed463ab97fe8141. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNWR2088846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e58c89c42d1866a74b23a0b37d5454c0d5a2d3237f4fc7629b8d6b6b97092a. 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/QZNWV2042160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee15b728f3947b3aa569a954e714ee75f31d4a1d66836e1269a9df3fbb232abb. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZFZ22104547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22eea7e4531350f635f4b5c7da5521cff3010e5f946983924aac51297dc398fb. 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/QZPJ32101727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684a885e082baf2c4612b3e5021675009c4bd99d48bbbf74d8d7bbf0647b93b0. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/QZTAT2170155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd325cdd90dff554bcc23a799864173347ac8ee1dc5615229a68f45fdf5887451. 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/QZFZ72217820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ec1980fa038c4d1e07d65f44707fa25ee8732a893348c66c27e217a56ff1fd. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZES62293444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b519b929d33e54da2ebedc9379568c079ec432930d6e8f1d2ed672aaf0c733. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZHNA2255169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4f81816d85a2c4a91197c20a2220cf58c6e5754208413585173f5fbe10323e. 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/QZTAT2283848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7128ad0505c46461875148e50a6fd8f346659dcfe53cd224c58153575e713e3f. 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/QZMEQ2387381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593c9d5bfd1fcf98392c48ed5da5fea8042f1725ab56b7d527c6e9fec3b7602c. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZTAY2336826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6983cfd561d39f509d34a48e6024aad44b958ed30d6fd1e2c0476afc5f8880. 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/QZFZ62563097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc95ff182911050eaf39e021b0d6c0b40d297e1fa60078104fd577150f41838. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZES52598113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2a1150528ab51440dbf1543e6bfa967d39b6415926b6338725d450eb7a8ccd. 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/QZHN32585312.