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 0x8f7c870cd0dde49a7ae39237747922d89db164235cc8a5086b52cb99b066cd0d. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/64dc57c1-3c78-4197-b199-bd0e1ca537ab.json and https://artists.proofprofile.net/proofs/artist/64dc57c1-3c78-4197-b199-bd0e1ca537ab.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 0xcd89bfab5d5e62cb6397ccdd84b5f19355b91974afe6a2b3c7df927645cb0373. 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/GXH2J2503883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc64571828606c8225f8a7da3e8ef052e3f62bf0bf0bba46e7e037e6367bea6. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:11:22Z), 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/GXH2J2503884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8feabd12196de07dceee711586a1e4a26bde22401d02993b85b3ec36030816c0. 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/GXH2J2503885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aac44d1cbf0f5f49a6a19d68cad28b435aeb61a1966ef0c3430505173d936eb. 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/GXH2J2503886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90486e7d93e7475487014c0699cf418108dda32f9a9dd98b4d6c1eac1d07aac4. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/GXH2J2503887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe858edd1f27088bb2a46aa91c562036a441630d3c857b4d7afaf74e144e3c77c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GXH2J2503888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3d9aabb1250963673ddf75fad3a70cb17698ad571462ad17c0107211e98489. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/GXH2J2503889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46b90f33b9530f3c3fca3ad60715a6f5f37e783d06ee1e9b63fb47d07c31245. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/GXH2J2503890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1004bddf28170d2675889d762739d262fbdb7439f56af41c2769e459e910913e. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/GXH2J2503891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd14904b5c211a535caa0e7f6a4ee90c59a00f595695d44d7b7f3ea56cb9e0c4e. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:01:18Z), 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/GXHG92540149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76fa640f289e90a2a127947d27b37a64b498b9dca44f9824ece1a6e92597a132. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T07:54:07Z), 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/GXHG92540150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0c1260257ba20b1c4c435045a874c2f3a17fba394755fe5352533545dfbd76. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:46:18Z), 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/GXHG92540151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa01dd9b726364b37cc9de360d75ccff2cda888ca8499b5ac5f30aa6fee1112. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:49:00Z), 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/GXHG92540152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4fe3a26d65dbe214bfb05e39605f0e41a75c7771ce11f8c2e316f9dfe76818e. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GXHG92540153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3241af46437ab2e544b41c09bfe70e4eec96c69ae79575c5b27536f090bf0aea. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:10:12Z), 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/GXHG92540154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82cbfc180a250aac18c48219f21063075c1ad0931fc6cd6ce77c01fbec43764. 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/GXHG92540155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a75e63c5fd2143d358efdebc73ec5b94f197f5c738bcbe6c0282fa089586e41. 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/GXHG92540156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x056e94bea8c3b83994c9af021000d63b24d1ce74a192e7f2440705c47c1de2ea. 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/GXHG92540157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1060a0b15f1e43828be135dbc585d69812b02ca1039d168d824d1e0f53fe8152. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/GXHG92564296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f88986c517997db54c8eab40292975b135a44c60b2f31cbe8358e790b0e89d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GXHG92564297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969168bab2f8761f0c188112618f290eead189ec6825e3fb8ad27de961954ae3. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GXHG92564298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6efa62cc4e1b197ee8d866b12bff3dfe9089d410fc0b0631834ea6b0f5dbbd8. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GXHG92564299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a006a8e486871b72d92cfb39e9c8c351c2239a31ec3e06c30c9bbdb81b48b7. 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/GXHG92564300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb0a81fafaa1fd3d6b04b774225777972cf9b9a297a2e30813e56aa5e680164. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GXHG92564301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1b450a13f17685dd51803c7cd79ddb5072f9135d7e7c3c9bb1f0b04e5ad715. 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/GXHG92564302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c9f82ab26683f56c5972a3d5adf7fada9348f7a03a3488f8d482defb312b4d. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/GXHG92564303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b67256a0eaa2392c914a096cc4be7a72f4bebfcaab0d06cc121e1491aa53fb. 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/GXHG92564304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a66bef242f1f8e81c78cb5d506558edb62fa869a79643c4a0acbca3ce7f6f93. 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/GXHG92564305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbbff404372602158f9e1d9b2fcb875b04676821cc009c6355dfd64011d04377. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:34:31Z), 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/GXHG92599503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b197efd9140975dd6fd0a2f341cdf63d424245f6e0ac17baa50c491dc41796. 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/GXHG92599504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e911836eb41d0ed5aa73edf0b3f8dfe390abc94f3e981e3e2ab7a54617af03b. 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/GXHG92599505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6052a192df005a9e007dbcbdccb363af36a328fc7fd2b0a2f172a6295af0e1. 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/GXHG92599506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba0dd069e76c707021e49c37cc086ffd315de026c32c1701560efe2b9662660. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GXHG92599507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d76152348ab42e96e3afd4a94cad7a3e249fabe7a5cfdf34ad2298bfbc4ae61. 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/GXHG92599508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7892a6a531d808a9547ac90ce04d3bc957dbf36795f863c79a5bb43aeb6f220. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/GXHG92599509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6c5d91692dc05f03322b0a83c137aecc2796c984c8f6e5e8cd90dd7461ea95. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:07:27Z), 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/GXHG92599510.