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 0x49a1ac9e2b8055ea9c36d3753f64e87e6859090b8026e5777bc88d2243c58bcb. Chain 2 (Bitcoin): anchored in block 954623 (2026-06-20T23:40:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cadc0dcf-229a-45cd-946e-80bb6e52155a.json and https://artists.proofprofile.net/proofs/artist/cadc0dcf-229a-45cd-946e-80bb6e52155a.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 0xd5c536eaa0a79f2bff3c1355f93ab4bbc7b32dd2850442d3769067b136715f6e. 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/USBHM0510169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d86ef4337fd1239a2d2904390f8b7147369474bcbd16219f43412b509f53c67. 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/USBHM0510170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3128ca0221cd371b4d37026ee92e16306d69fea6c3378e9d91984b09d520e9f8. 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/USBHM0510175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82afc06c2ce5befacfda1bab3f49fcfcd5f43e7badb900ea55a6ec7a70ad239a. 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/USBHM0510117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8470e0f22b6df1ea295fcee10cd510863a1c8bb339b91c57b281aa38c279c5. 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/USBHM0510118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e83346685a6fd71bf76712aac1689c5f0f016e408075381c13ad44ca7fb6ff8. 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/USBHM0510122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed254dcb0a74903bd7a6407a44325314fbe388048b3bcf61ce4c2074ede09fd. 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/USBHM0610067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb9a0070fb2816179823bf876fece0e376387834fd54c7456d671e267efb0bc. 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/USBHM0610068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12114a6713d88743225173d80b9d63d05ca588e568b56adf0c6b84d6e501f217. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USBHM0610071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8862c3c10bf1a5a2045e8ee13f63e158f5fa22c838c809fbaf133866cffd391. 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/USBHM0610072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aefb3d2f48a9893e3d3477937b997e2164e975d5c6bb4ee95be4df364f0344f. 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/USBHM0610074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1dcb2e347a011cb6233908ee7fe9a4f4910a3a6cdc7a0b50712c543ef7afd8. 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/USBHM0610076.