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 0x7ceed1d601271b8ea274dd737fcbd8cbbd6db8e3c564ab5d7af5a0fac7cb2095. 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/0f28ac52-6467-42b0-bf92-b4c2b7ef3f72.json and https://artists.proofprofile.net/proofs/artist/0f28ac52-6467-42b0-bf92-b4c2b7ef3f72.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 0xb4bf06c9c2bfbbd747f94853888200c3dc780f0ebe5446b98d8b17630049d3d9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GX3Q92092674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01a713cd733d2132e3b710be7f7e65c99519858e0b88322ada0c0e114e47af0. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/GX3Q92092678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb895d3226ad0db10f7df71da2be08d6423b086dd0132e38be34a691cef748f7. 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/GX3Q92092681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db3b3356c5d61816d319808221ef10d3a7a4c9aa7ca1f70b2486be2e9a55d01. 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/GX3Q92092682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0b81d70374d3568b587bf40261a173ed3eee9f4869d0e0509781b7ad452788. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZN882210860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0b81d70374d3568b587bf40261a173ed3eee9f4869d0e0509781b7ad452788. 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/QZN882210860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81795f72e568a0c8abae9a9ca54d4dfe3d99f90999965ca63f41e72e9da4361d. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZWDW2300513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd0af4d52d9633f04de30ba15271b5f3dfc70357e2a1ca0702d00b129bb5068. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZS7J2370429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf395d03ed0557afc090e5e318b63b5b661c11d978e4a516f494fa912f5554c46. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZZ662417949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101a9d0da8437dcee5ab65bd730c9a6deea99fe8e49005d84f586f4563125a0c. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZZ662417950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa4fc7b5b964c863bf17f889f0799225328367b866e754a1ea1d98d87fd0b05. 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/QZZ662417951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b19ae5524673d3e43a749bde0d43ecb27be1a1622d3943c9b7e5529837e0f1. 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/QZGLS2499123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8496ba37fbfe83f4498ac648e45478ec1aedcef11d54d85a75bc241fb7d401e6. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:44:03Z), 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/QZWDW2433887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8496ba37fbfe83f4498ac648e45478ec1aedcef11d54d85a75bc241fb7d401e6. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZWDW2433887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e53e32e0f2c27dfae62d6a069787bf04b3d0f034edc2ba49743d01071aed50b. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:44:16Z), 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/QZN882440919.