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 0xdf6b47080d5837f6aeabfaa94b2ea8b310a0ceb1e58240f6f668251cb4543fa1. 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/52dc14ff-01f9-4fac-b2ab-92d78ce9c9c2.json and https://artists.proofprofile.net/proofs/artist/52dc14ff-01f9-4fac-b2ab-92d78ce9c9c2.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 0xbe3c256ae7d2a72754344d97797243445537c4c258cdd3cfc51aff9feff50356. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/NZVC11300000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5f1d76094444e7a7ba1e51603d0da1818b08edaa082461f7afc510b0b75c27. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-17T03:36:21Z), 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/NZVC11300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8126d380ad0c018add1cb1aa0ed75b555f7d8c909edb9ff80380901677c92015. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:26:17Z), 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/NZVC11300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ac985f1771dc11bf2c2f91eec4e2de3231e5cf240cb9988c4bd33cd40273d0. 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/NZVC11300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968eae595af318a770efcf6a6da8482587df511ad550bc992e15c1be03947ee1. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:01:55Z), 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/NZVC11300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79988b915007f4d955ec9a67abba6b6c78a881186070cbdfdf880f27ba32ee44. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:32:20Z), 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/NZVC11300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383eff77241d98f3f6a6c2ca0189ed029c0de8c60961462a265a6941c34ed83a. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:44:49Z), 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/NZVC11300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8401e7f42efad93dae167c11ff70e33add2d4875f3b3c8690790b780eafd4a61. 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/NZVC11300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9210db07ae20403fcee32138deae11b9d33806ad46d20406ed23879fc3a8feff. 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/NZVC11300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec8ad749314db1b58a13e4d7ad9f2e0c76e66c88c26b53e13f049860e9912f0. 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/NZVC11300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86e5994e057f527d96f2aa69c3288746e9ac3613a1b4220b6a130698ed2cc58. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:23:41Z), 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/NZVC11300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33361b834294b0a4dd58cbb9ea71afab85a2f12c86e38aa6bd7279290625e8ad. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/NZVC11300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7eaa6f8402cda2fd992b381388e7796f1730bdbe5daa009f5c201313615b0f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/NZVC11300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7534ec52df4d84a17b8c3eb7c3b7c80a5f16790eee6d271f89ad32d2618acff9. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:26:57Z), 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/NZVC11300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb155ab8e01228cb201f1db4f3246375927b274d2de061fc1a3a6f2d0c965c9. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/NZEM08000038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3694a3a0108aa9c4e4c7710bc1c6c32b80e63a237d3271acf1438a6c5cc73b. 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/NZEM08000040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ab88c39f2cd6d7839a440e9a81c4373a922f9caa7e69a03c8592eeadada7bd. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/NZEM08000044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e549ee068da96c0e673268c7cef5b66ad346392eb132c90d8cc7e952cd3bb33. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/NZEM08000045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ce19f6bb91fae8a1e282761e505794eb08c0b702f9e2e5c14c568bbd12d5f4. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/NZEM08000050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa66da6139f8f061fc083c1ccc8e56828a7700821ba7451db28580d78169e77e. 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/NZEM08000052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf351d26353a05822a0e61b6093c69ae62e97f6795fcf8b01e738c61a722abbdd. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/NZEM08000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87c70411300ea9eb61e2c1e91b8e23bbad5b735364bf53e755611f710954431. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T16:02:23Z), 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/NZVC11000200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43c02ba9c36176dad8511f77ad8054ceecc1fb0b1b499db6d7c58e27ce6c6f1. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/NZVC11000202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9edbc577c19154d6abd7b9c00adef300fa1d65d3432d57eb053e90b3e79e3d. 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/NZVC11000203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee44afa18daee5130f16b382272e1faddad332dc4de65654350bf226811d0c8. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:44:18Z), 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/NZVC11000204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7e49598ef968d1e4634f9807834386b02482ab03bbfbfcee1fddb559d57cec. 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/NZVC11000205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db2deec08ea7a939461768c89e3c97e1168cc97699b147c1250861636c4ab3a. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/NZVC11000210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9bc431da3a5a39bc3d6014ac2f2e1fdc3a449f3c98b9fc049e8f6dc2f65ffe. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/NZVC11000213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4350af7097849302feb59bcd970a3d900a8207382627c89a94b4c1879e4de0f2. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/NZVC11000214.