1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x789655dd8f984774d1049f2d203b0f290d3bfe49992219d84d64e46195c1b334. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/31821071-ce06-48e8-82c2-9fb8e77e2373.json and https://artists.proofprofile.net/proofs/artist/31821071-ce06-48e8-82c2-9fb8e77e2373.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 → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x8a39138e04c88e2ade52984dfa48bb2bb78246493e4e0f4e884d1bf32cb2b801. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/QZMEN2513146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf492c03034ff3f754cba4bd9e231b9af236a3132955f9b5304c4caae4d171c78. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:45:26Z), 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/QZMEN2513148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a68cfd18f82b70dd10c1ff4727dc53f87f71b72005ca9c547c854cd7a020a5. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZMEN2513150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd777b902b51ef4b9d7249bb9e5efef987e4dbd44a29dae1873395275d148fbee. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QZNWU2563943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed269763f91281c3a7379669dd94f0f71c3e63c756e1cb8b8f88e456374c74a. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZNWU2563944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d70cf2d44a782ab621be1e37f061ce7972b7504ab0d77434e35898b0a2c0328. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZNWU2563946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdfaac3f63e4129e1548e76e005f424a3883d0a29bb4e32a3e7efa8409d504d9. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QZNWU2563947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cda7b2997adbaa656427d5e5309004fee6e343e32adb4415f4548c5d6732c6e. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:01:14Z), 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/QZNWU2563948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba977d25f0adebdd4c317a24282a6fa2aff87b000fbb8668494bcae837d64a5. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:33:52Z), 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/QZNWU2563949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1722c93670338672032e56c4e6f9460c7f236860a89e13e24cd1b8a8d49abf3. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZNWU2563950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83df45cd01a2fd144299f65186c0c93343a470c06dd3df5079d191363bb39466. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QZNWU2563951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aedeca59f48c21558b2e35602db9f698135c54dd8e8fd8cfb9afd540fd4af99. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZNWU2563952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d52fe0da8601920adfc73f0de22d14beb0ed335e65da4cf69115762756fcbd. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/QZNWU2563954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b5617ec64d48561143818ddbab0425c227ff6101be572a3377131674e9f45c. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:49:40Z), 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/QZNWU2563955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc39ad36de0932f6aced8e0d6ca2591d318f0f3f044454d9f0a1f81174d53420b. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZNWU2563956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3dff7d0df2fea4d432799e8c626724e3a6bc26f82dfa1034d5efb8235f11d7. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZNWU2563958.