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 0x6325f3c14e1a3e71b2acb2d9fe1198d1102ce38dfe42af82e86c2847004f6414. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a8ded60a-f342-480f-9f61-7c40b760ed8a.json and https://artists.proofprofile.net/proofs/artist/a8ded60a-f342-480f-9f61-7c40b760ed8a.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 0xe1ea8910031c5a34ef03d512a3b0cafc2bdbe90f9eaa172a5a75f4b764617a66. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QM6N22111296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669ff8143e2c47a133301b36417731779951e074b3250b9a23e070854826d459. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCJPM2048066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac29681877d72e1475b54ec4d1561f193ecfe48e9195a9acb3f6c2697a9a0c06. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCJPM2061951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf99c6f1d032326c1e2065fed653e4d3169d45d43fb2883cb5c5f182c9efe500. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCJPN2018154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162ec1de1d57208bd2404996894472a1d87f416c7332c6aa6b7368b4d11b2da7. 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/JPU902101421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59cdd1a9eacff9479258d91fc73be2f1b2e954a79040bfcf815c07c4a6f0d90. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/JPU902104400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93316101eda9c5c3069b11f04fd7d3df1d246b4485e19cc57086d8142ef81fc8. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:24:17Z), 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/JPU902104398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab8205f096500aeb00cf2949e201f2d21b32c87b4b849ac8c85c2295fe9a727. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/JPU902201615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0026d725c396c355e4dd578254964ebbc13a0d05e4c679649cc7d1720b46365b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPU902203050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01125aaf8bc1ec65a22a4ab141eacea86f4be2eab0833de262b1c66c28f18b96. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/JPU902203051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a176b1ebc5603d7c7034837429e72be4284abcd05ad682d1d6a3c21548e59d6. 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/JPU902300609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f57358d1f525fa19ace1cadb733945407a47fbb317ed72d137d3e6dfa3ae9a. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/JPU902300610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c92e3983c700a6184e58525448ac5ff90437cba70debad90f093b100f1771f. 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/JPU902304091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1a7916f68e92f06768e2ae9316014558c8fdbf4e96f5aa913e5c2cff991f69. 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/JPU902304092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622b73cf578b6aef5199b0cfc635b53990bbdd274997640da9e0c4b6893d7cc5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPU902304093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ce4cf1bc0f3f351431028aa6772a2df9f6517acb63f389eee6170f6bf202a7. 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/JPU902304094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586bce5487568370beed3a2b94056b5de34af241b2247255db25d6fcec8b9989. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPTF02403001.