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 0xc73fe30cbaecd351c339e7ba101b75a5c35eeec4b54ee20f316176c8f4888169. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ec1f3331-2fd0-47b8-8c8d-4728937b0b18.json and https://artists.proofprofile.net/proofs/artist/ec1f3331-2fd0-47b8-8c8d-4728937b0b18.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 0x6840004694eef48ef71cf5c876c502a76b7e64e4006639ebd9bf5126d78f3b54. 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/QZFYZ2126745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503cccedfe3badb4479d6797dcbc0138861b0e5e158c4c66bab36b5cd0e901fd. 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/QZFYZ2126746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf26cbb16cc50ab69f2799d348adf23330623a22107b1ea516aed21c379742a. 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/QZK6J2151991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9dfd77d49caa9c6443679a1e4dfc028984c8698b6e2adef30582f60ad11fb5. 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/QZRP52176711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180fbd3b6adacc2ce58499f5d6edac2a9d10a7418af814b2939697ea34b28797. 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/QZRP52176713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7e810b72e60e158f24973f18c1841b007c5db177f716f3038e636fe31488f6. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:44:54Z), 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/QZRP52176714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44cd9960a0278255ecc30373bcd8c2fa53a58dab1615dffe00c5a983d9641040. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZRP52176715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97274115c5606afa30f66cae85b2588d1be7cfbae59a223dee26da68efbf0c3c. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZRP52176718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb610e051f7cd5159e28ce02ebf68f365b59b96778af919d0b0588c142a2e5b34. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZRP52176719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7594e11bb4372d4c8189b3a33efc59a9a54ecf0222924a280fc3287df88576. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZRP52176720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5cc94027161a4fe7210e038572ac21cb1cf7123201859363e693734f14117b6. 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/QZRP52176721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2bd033ca73645d7f131e3ff68747216d8d144506e23f3299ff9f77e2b93dc1. 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/QZRP52176722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409fdbb0edfd63f9a0e355fbf6d3ce90c98da3f63f87d35ef90d676c6bff5e6b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZRP52176723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da6ffa0feecc20f2d5ddd3dcb884bd0f75319eeec43e6ab78c4171e2e938d71. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:07:03Z), 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/QZFZ72244607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36043289a8353dab05d72fd37b8ace9034c74c5c3604eff06e29261fac36aa6. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZNWW2289836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd435933ac697ffa2f822913086bc14e931f4e5aebc163ea3b400f01a8e8f9640. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:04:47Z), 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/QZTB62211433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1331ab50e121b065aea242c441b099093f379a1610f401ca92068d231bfe1c. 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/QZFZ72338099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc006f2e43971bfa6da8905e6e6144c53a8a36c4ffc3378a1922e3a3a95bb2819. 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/QZFZ72338103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4523595a5001ecef83b2744d32e76b0e31a4066d1b924292f8eb5016639e2124. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/QZFZ72338104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5c6c951f2090c1c653e71ac825e53b5c9e61977a9a510429ae577557cbfd35. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZFZ72338105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133c566c73489b742ff8da581e8dfab9eb3981d400829a9422e6132cd25f8a6b. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZFZ72338106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2989dfe064c0e5b8b1eac060665f435d0bbe35e99972b150303a300e929f84. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZK6L2306676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145c769619ebbf8c2dd9cb321f4b729510107973f1ba9dda4b78bd84fc7cbcfe. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZTB92434483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed20eb0154ae8e89d0bc5e26eeb7f3be682c0fd0887194477f1ca24a06bf28f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZTB92434490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c70460043569c37da276ef1d54f33cecc2eeadce89b279cce31ec006285291. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/QZTB92434491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1a1ff55dc5a22fbe1df3e72f6dbe50d4bf3e95c63adef19b323b08fb98dcee. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:51:12Z), 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/QZDA72566084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5872f69615814c9803883924e0cfc94f501cfa7ded5c8dd110a04a30e2e76260. 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/QZTB72543418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6bf36653a97d8078835b1130b018794689fc3aef9e1dba0c2a2825edc38943. 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/QZEQU2300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6bf36653a97d8078835b1130b018794689fc3aef9e1dba0c2a2825edc38943. 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/QZEQU2300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db99bb79b718ebad1d857ade32f5277119eb2436f4d88cc1b3bb56453426405. 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/QZTAX2249693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391c4562130cb4f814f472f7e6e12aad88153234bd1c17a113c1946c27899acd. 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/USL4Q2144640.