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 0x1c54bdd6242155065a51a1608babb4808acea97bd69c73ba7439883c59098a48. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d9c83827-d92d-4591-9a36-c333fa733337.json and https://artists.proofprofile.net/proofs/artist/d9c83827-d92d-4591-9a36-c333fa733337.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 0x1c389aee7a349931284f9ce06cdb969a2e9dac3a4a05127d55c1b0f9a5e6076f. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:03:46Z), 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/USWU30900031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91910fc0389117c7bcc61520018b70fd55023b7b6cf6b141a5298d59e05f501b. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:10:26Z), 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/USWU30900035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5fa747970e7be7614608dfa7275674693bcb13379d3ce926240356a0d51c852. 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/USWU30900036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a48d053b775e38506906a58875d26336aa7181eb30e13875f629e70ced45530. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USWU30900044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0a2ee3576f6df2b7046952bad3cb2275672b1afd6c7af0f104f9d76c1aea7e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USWU30900048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1fb9d523fd7da675447b668b7e966ea934236778700112b0c07b0064ac8f0cc. 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/USWU31100112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a8799df0ab605aee8c9110d4d4c56adbd4f13e3617a824e42b5f6efa268cd2. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/USWU31100116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21f8e89993083314e6d2a2d6de1927194fb5fa2e49a633d2fff2fe80b2e6450. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/USWU31500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b22214ba08178580073a68f7b81684cc43a511165306d054126e11675ea2de. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USWU31500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d93c0a042f4129166b099bae50f279a7a4ca772df56440737d8e51d104e9a69. 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/USWU31500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b7ca492a121a6745c4590a7e1054f5df720d9fc55153aac550e5b1b159b1e2. 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/USWU31600366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee065476116460c392615c683464910c3a7847ddb4ade0f3dc0d7528678d97e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USWU31600368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd35233dcccc902fc4c3d8144afafe11c701d522807eebd8eb77559127cc6e18. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QT5M32570247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc011cedabaa2f1c0e3dd7697116e6337835b2fca3fe41291b8cacd2ea8560a3d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USWU30900034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e2d02a47ff9107f6d6c44f61e737c5e23440f4dd3e25385a3872289dd270c9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USAE81032683.