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 0x4f9128dec53232ceebe018901df8f1b963add3cb617dd7c1d9008fc633e90be8. 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/809c8bdb-e75c-4806-9209-45fd16bd5f88.json and https://artists.proofprofile.net/proofs/artist/809c8bdb-e75c-4806-9209-45fd16bd5f88.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 0x22d02fe5acb7906c20eb09bfb81346baadcc7f6af239d81107e33023aaa3699c. 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/USANG2003994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x516c3042162c16b93c01b787aaec4774235e28bd002522301d5c8d786c3a5b46. 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/US3DF2063940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641d4136ddc2140e8d937f95aa01734b6531e40885de91f420bd1e7c0ac2adcc. 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/US3DF2064030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf231386860b0fb1bce7ca765364d319ac288b2a07926f52217ebacecf4bdfbf3. 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/USANG2128400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67b474e66edd86f70b04eeb8c5273fcf58fe10c7f9f27e1cc842014764c81f6. 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/USANG2128401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8927a6faee3c5ca2cdbb2fbf928422925b42615128e78d508634ed57600d930. 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/USANG2128402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a5fadc3b5992a3170f2b948312ae898bc25d449389cf5475a99e4a6fc6eda9. 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/USANG2128404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3dd606ec06a42a9a7c9f38bd89a1ef57f83b5aebb72d2990bad48a619e084f0. 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/USANG2128406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef6cc52616ac1f4994d4ec95bff47b79846d704df8acb68df2baa3daeae4507. 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/USANG2173776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6c5606497c4f4d67aaf8c3d4ea19fae88ad684bd8bcf9f2c14bb3f9c9cbb14. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US3DF2106031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03665284011bc5037deca0e533a502c71114ffe6db3e612e905fd17714b863e. 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/US3DF2106045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631df444549a0f519a255366c416a25830d8201ebaeeecc732eea0fee799f75c. 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/US3DF2106048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995eb1043664b5c8c4c5289c8ab33d3a165d74af4273403b529edc5203fd20f0. 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/US3DF2106073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691e8f9b79852007e51d8596dba96c941973d0bc0f599bd543fbbc8200c7ec16. 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/US3DF2106075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428bbb0c16ebb5118eadf57ebf771033d161796132e3d71ef7c02bd1b666e0c6. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/US3DF2156143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09c206ba85e3b3b912eb12fc3f99da87165a8cfebd2c1e46ac0dc579c8ed2b2. 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/QM3DF2148162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cebcf1e35433bf42e869e52769d4ed7c91c034c189f6d1acce15d9f834653d5. 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/US3DF2230493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8816b62a7940807016b5c195d71a196ebed36dc22163e268bd84df3201545fa9. 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/USANG2243790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c626a3eeefdec8e5da79c65740d7671007f605a867e671fb73f54b53c7731c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USANG2243794.