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 0x672f34956ab247ee823cf88f9437da333c44aaa75545d9f6a1a0713b42568f7f. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a76bf768-54af-4e0c-a3dd-6a6559399ebb.json and https://artists.proofprofile.net/proofs/artist/a76bf768-54af-4e0c-a3dd-6a6559399ebb.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 0x7b54ed328b6052e094970ac4024537fdf54e1d49262a4a198182db03819bef83. 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/UKXN22403178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ba459e81204e208bdf07ab4a00828874db321f4a5ca17f948870e7c8d3ff3f. 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/UKXN22403179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ed4488fcb99a28f1d30cc08875ed3655f355a0b28fa566e0ed11daa2bcda80. 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/UKXN22403180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440158998a263c645efd4a5617bb7fa063c0029d50d77350e3bd5a63c371b4de. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/UKXN22403181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09126f3b0c03af66c07bf48c77edb64e66f2bdded97e614947d9f0b26b4f904e. 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/UKXN22403182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4aeff13650d54382d8868213820284fdac4c5b157b1765c7464cd8444b23d6. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:06:33Z), 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/UKXN22403183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ced921a93a3b1aa692641360bd6ddb39080d3534c085daf64db4cb3a4fd5b2. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:24:50Z), 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/UKXN22403184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a71fa66f2fcb853715beb21ee29a56509413de6825d308679fedfdc0605cab6. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:47:31Z), 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/UKXN22403185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf976c23a938f8574a135b3aa9cce590da93527c457ac620cdd6c93c4cac9878e. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:55:56Z), 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/UKXN22471614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83ef1aec1b24151261ff04f978ec5c07ad15a1da125332a6d4036a657eb15c9. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/UKXN22471615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e488b195e52fcdd70824d9b7ed677976a23f391a4063fa5935ec618c9d7df3. 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/UKXN22471616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900f87a10d324ced0ba6b0caa1d51852f9ce9ce793b47fcd319792f1e2a9991d. 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/UKXN22471617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc8d65826b7bb55f48bb78b3c7affff349756684e5527668c17a9281f0c2a8d. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/UKXN22471619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4eb893b0d7981fe3064e80bd7ce07c668fac274324b7656ea9388a70919f94. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/UKXN22471620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6680e5e64364a67e473931c3263af20ea33deea6ce83a46429710153bd32a36. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/UKXN22471621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00de8dfd1741558d731add4726adc884524773062b35d7e9d4b8dbc94d745464. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GBMA22438275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a58c2b6f67ab4b35e4f33b64c081d6a82c461c748c65f0fad328adccc8d8213. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/GBMA22438276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49194feaec76aeb92b3ae52a938704b6902247716dd779f2d7095b1c1c86efc8. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:58:51Z), 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/GBMA22438277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5fbf707751a1e08c28ca6a43f8098cb76c9130f92936052391a41692f6dea7. 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/GBMA22438278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea058812953573ed230c63002de89bc92b0f7aeb6e3faa231fd29ddebeded94. 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/GBMA22438280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d45ad4f7da3c4950e39abd2ba2011086ee22e443b08382851447f5ca24dcc66. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/GBMA22438281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3a128cd83f06e404c07205f70e4c167e0c1e2393326713078444e59681c419. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:35:33Z), 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/GBMA22438282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4012ede4bec62bf92febcb43119b8c03f6c7ca922e72042a05757c325f58fe80. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/GX53U2364027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4ec044e9ac64655c643d03d2a93feeac468a6ca25f60ba75d183801f84e549. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/GX53U2364028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411ea40b02d91987edf78a1222c141f4c57604bd1dfef0df28d822fec6afc3ad. 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/GX53U2364029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62889751ff34c1738fba5452ecb9d5d2faeb81ae02f8b33a8a1a552a7b1e65d1. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GX53U2364030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bcdff04425a1913fd680916f51b51002235a5e396fe367a11ca7ad651d2eb15. 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/GX53U2364031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51beaceffe12324142fdb5b3a6b29ad26802202fc0ecdb3f20dab5d3d0784bf4. 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/GX53U2364032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb1b97f8437025ca613c2d29f6ce120c1f62d54d8c21ce4807683f9c727151e. 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/GX53U2364033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17eefa2532fed6df440e70b573684dda5ccc3f8085f6a843d43d39f2e2e49424. 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/GX53U2364034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3789efdee02b181e549f45d4903adb6620a75865f5e32409a468f316226cfe3. 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/GBLFP2537891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4197f5afacb2b5c464815c6197bf73953622bf312e3779453129e7d1c6fc878b. 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/GBLFP2537893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa183f1635d4d2daec985699272d57ae1bc75ebfa17208050f28879d3b620b821. 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/GBLFP2537894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca119d81d6b53d020c19469935995b302f22da8f2d0001c0635fb76d0a946210. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBLFP2537895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a72708e994dca1dbc454b3a0c4f406fb57584f2f278756adef78cbe44799c6. 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/GBLFP2537896.