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 0x7854abe44a8bff99c8f270ad78fc4911b8c1a60b188d9ce5ab65aee6d5ba8f78. Chain 2 (Bitcoin): anchored in block 954555 (2026-06-20T12:10:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ab656901-57e9-4b99-a5de-11e5f83d7e61.json and https://artists.proofprofile.net/proofs/artist/ab656901-57e9-4b99-a5de-11e5f83d7e61.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 0xe97aa4c2acf9180876a51f69aedc191f27fa510584dda59a138c8b5ac858dc70. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CACWV2058535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae6ac80c4a7d4aa894cfe7f5ccf2cec04dbc1ed8e2f4902a129dd34703ab07b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CACWV2058536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c63a88a2f049eb33395cd3eca82220d40ed36a65ed8e14392af4f7dc0fbf576. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CACWV2058538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3f9998db79c68d064fff57a790a3e57cf8cde94eafcb4e9d9de5b23f9bd87e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CACWV2058544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d028d089e155545dfa7ee88c4d16089386995d2991cc44304f0e6e3b148193. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CAENV1952688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ae394b16c8d9f3e015d7988dc20285057f9e88cd17a6e2becc0e4abe6cd6fc. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZMER2451301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0879fac14cf159d01d60e81c101d289c43a7f4c7951dbf93e480f3dd9a7f231. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZDA52585135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c59dcc9b7e21d9424fae8fa6001ac2a4191a5a6ee0b591d9476efa340db7690. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZDA52585136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4685c1aa0a0dfadde3f88f106a5300ccf30b43219d52eb13dd9085bada8531. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/QZDA52585137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093323a094f7db20f65ff7c4fa5282eca561947fda8b8e0cf863d0eb07b508bc. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/QZDA52585138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd998e683dfbe8f9cc1ca72a2961ded9e77172d81f087ab050b2d9c9c79fbc14. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZDA52585139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef13dfff73eeeb8a357b068165a90b48abe59717455caeb4712b8c0ca30be80. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZDA52585143.