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 0xe4b656a73284fd1a4a6d2d354fab8fc3aa39328ea3c0cf2ef59530ad742ab3b3. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/497849f5-aa8c-4b4e-b6cd-e5e493a7de63.json and https://artists.proofprofile.net/proofs/artist/497849f5-aa8c-4b4e-b6cd-e5e493a7de63.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 0x6e89f485886fae981dc93e12f3566d25d868ae4bffede20a00c694cd46420dbe. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USKRS0320701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf1ecdef5f9f65c51027ba4958db075c03078480db4a59cdd47ce5da8881869. 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/USKRS0320707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7693060192f43b535d5abb2f8ad0dd9f3e3d602934f67359e35782d484f6dc44. 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/USKRS0320708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27865a4b0f3cfa0a4d5802d7674848fde4ea7224c6b5eae7d5c55f00c99bb64. 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/USKRS0320709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e45e9887ff767dcd5b0141b20d818997d917ee9f82f2099c2df18f6f187d686. 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/USKRS0320710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b4845b10a4007e05890643449bb8cfc872e0a10befe66272cbf7a4f0a8c394. 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/USKRS0320711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79eb8cdd415603c4663b119b20285d53e3f2a53fe03b7bfa6bb5865833c48bf8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USKRS0320713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427b8494bb2b903664da48a1b73add83295f34f5e2c7c51be245594c2cbf133c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USCGJ1296694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2948ff2d8537991a8fdbc9d21c3bf2ff0e0017acc301fb96d7c0fe124f65eb. 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/USCGJ1296698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66b5dc1985b7c1af6b9b4b2518eebd1da86de5575e7e9063cf460d6113326be. 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/USCGJ1296700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf147b068b12621838aa6a7611907ac73154f167af33a7327f707737d27945c07. 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/USCGJ1296701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54575cebec18663086c25d5e5fa857fc3431936ce7aa3a22c8a710bcfa5c812a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USCGJ1296703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8262600c5427b26f31db41838b892b91744acd35752fdec27bd2a052954f6597. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USCGJ1296704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9cb508b72eeb31ee5370bc04c4bc21b3fb054fd69df592733f3a8cd40b0865. 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/USCGJ1296705.