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 0x4d607c1d36770ba80e27691279db6f00c54bc319b584fc6eb867285478c3e96d. Chain 2 (Bitcoin): anchored in block 954556 (2026-06-20T12:14:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/af22580e-4e16-4811-b316-19a83947040e.json and https://artists.proofprofile.net/proofs/artist/af22580e-4e16-4811-b316-19a83947040e.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 0x7308e3b18527280cb4b403390e7cc820e3bf59f4d7a74213d8200761347fdb32. 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/DEQ121855746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9832e87c33ca16b7ddc6e06c0b7082431ea627bb8b640c79ad0951422b0f34a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CH6542091469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefedecc4567f3f7cb84ff3078a305f149d5a013bd980f71e025f2152a737cbb9. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CH6542004771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6423edbbb9c78229cbe644529aa3c89dba4ecd7138d108602d8d6202ecdfdd4. 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/CH6542004770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66076834657c110b1f4ed44cb8aeaf983083558ad2bc5c1993c310df5b4c344b. 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/CH6542004769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3699d7251512406460bc817757721ac458ff42ad759ef267e04865c0b857ae. 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/CH6542004765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef52135ccce1a7ad0675963c398d5383b04aa479753a89ff80d48b3b1521e5c9. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CH6542004764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7ca62dc0159daeb42b0317e6ad68d62d87be8a57de645fbb6d7214462a2c7e. 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/CH6542004762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44842275454e71e5dfaf3d8f8313cdb8a2a27e1ac324fcba6e517420c3ee15f4. 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/CH6542004777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5776ba04176aa58db7c048a545cda88a632e1a72ddcd598ca63363375c8c4abd. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CH6542004550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11385c4a8d83efd89faa9e7e915ec9bfe369d3a60c5ac19e9068f2e9602b693. 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/DEQ022290353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd765ce3d72355d03906648f7068bb882cf329185d8957e78cc28b2e951bd3ea7. 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/CH6542007031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a1fecaa002d06855f6ff91c28a6048acece60ce5701b4c63f6ebdc9f60e522. 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/CH6542007029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaae100e7d0c9603824abb4948d7f55035ddaceb01610c0518c74673a36855a4. 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/CH6542007028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976acc92730ae15f0f97953ee3fb9124e6c9f5c8150f3f435b91264e326482b2. 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/CH6542007025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4930bbb48df8b4c92ea1ad3cf1ec8d8530cae63047a5bbfe484261c275e71b. 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/CH6542007021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b8d7e108008f22d36c6d7b18304de3d20fb5d53f0256c8aa737775b97fa2eb. 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/CH6542007020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98351f677366938d292bf2d292b177161e7d412ac0cfd4974fbdd4175f5f3703. 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/CH6542116889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcdca77486417129ca8748c2afc5886a2f01ce11187794d2c5ddefc2a40c1803. 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/CH6542116891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f17c871db334c0c98ff01d22b28eeb66ee18470451b348c7cfcfb642ab5ed3. 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/CH6542116893.