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 0x0fd52b88efc2e8bc4b5a27e2c96fe0ad99c7ed31669ae4ef20a20f89f9d27d15. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/80866dcf-dc4a-4afc-8089-3babb55bedd9.json and https://artists.proofprofile.net/proofs/artist/80866dcf-dc4a-4afc-8089-3babb55bedd9.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 0xb9f02c0f4ec3c67a629bd4ed27979bd49cf65e19ab190dc9297a1f2aa078e8f5. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZTAT2314632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a563eedf33323e7c1bbdfdddbe7f353c4d22ade0031ba2f296d59e35ea0be7. 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/QZTBA2304022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3d1e52afb5b524984fe36b39a8d86b2bb159a4517cbd4c5c08ce1a7cc3d628. 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/QZFZ32405568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f0cd98c8b9ac1a5e5d5139729cf35a2055ec3b603e80f58fa1d19047de55ab. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZES92481308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37ff0b3db70deb2211e6048ac4dbaced88cef3bb98057ffa4c521ad3f4338d9. 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/TLVEM2458331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e1de8e80920a2466033017bb31e2bf75a904814ce4cc4a77e642ad7f230261. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZWFN2416721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5592146f4cf062cf855c7d153afff22c8b483735617a92c1f184a6837cc51e6. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZFZ72573797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677e72bf917c647d9ddc3ffd7ede1acc6ccf36079563be0cf9abac3cb4aac820. 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/QZES62512407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d42c2442b8b368527c430ee34604782b7b3ab0374ee6dab104b3c712472973. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZK6K2579655.