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 0xd2853ccd9156bdcaf39742ca046e5e362f01bbcd87e0e5ebf8cae2ead5f81eed. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b2f17da2-b643-4f8e-8211-307fd2089a09.json and https://artists.proofprofile.net/proofs/artist/b2f17da2-b643-4f8e-8211-307fd2089a09.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 0x89fabde363c3700cb35fd55b6a51f27a82f8a64157795b54c505dec0c78d77b5. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZHNB2052337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88a46ff6f4f9a22d9fbead1b7bac1614202bf5f7fb087c1140b472248f5818f. 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/QZHNB2052340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bce053a477ed4ad58e919f1e6c0a610db1362149dd71ea77af358643fb33ca. 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/QZHNB2050656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44948238d85140187a84596448ecc564daa0bcfcb8eff9f47dcf635fd283aa4. 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/QZHN92045598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5d1acb45dea6eff469c231f62ad00330cd48f80cce7bbb7362589376139c84. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZHN92045605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5943c246ebd26ba8817068ea1c640c2ec60964f97667b3d4e85a1c98e5fc7390. 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/QZRP52234583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57923af1d5a072b8425669df84d185aedb823dd55eae2166782aeb5c6931bea. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZTBC2516465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7bada85dfe677f6fd058a734bcd445abc8d50917b05f6c9e2d4ba9f9dea36e. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZTBC2516466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f09eee980447c99a3e465450e19f326f3a498f7a83491736882ffc26fa4f94f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZTBC2516467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7bee810e6bcd0176bf8134463e749eebfbbcc668ebf5772e5c10e6ba62db151. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:42:35Z), 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/QZTBC2516468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc468bbbed65ea403f8ecaa027a4da0c22ae11ca7cbcff2a3e56c887c57ad3f93. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:45:53Z), 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/QZTBC2516469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ccafa7dd28d836acf6577643bf85b59d5e8a97f69fd12e8c056e8a3de79c4b8. 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/QZTBC2516470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168adec2dce2deff5548abf75152c08f511e6d3f1db9a989a0a55a0338a16be4. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZTBC2516471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe676937674ff2bf142994fc60b3f0cbb19ea863934f9e763074608e4b006d3ec. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTBC2516472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a426ac746fbfcf1de8d62839914b7e1de6b057de69747cb86de699493b9b44. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTBC2516473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094ba1f7786603422aa2de30cd7233e88e5bd5bbe97bdfbab2f64f21b6527cce. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZTBC2516474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d6be2d4d65859cc6a6e4c08f2067dd772527afb2f0bd7673625c568c6c13f0. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZTBC2516475.