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 0x36a214a843276a725f721de33a5a276b59a3c55f29dc714600cee5573c8540ba. 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/03403b36-e0b2-4a7e-8954-d8025b7a3102.json and https://artists.proofprofile.net/proofs/artist/03403b36-e0b2-4a7e-8954-d8025b7a3102.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 0xf3105a2576053d663052dd96923c09c60ab902be2c7ff60ea89a01b992a28655. 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/UKXN22272579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca567a47a27f2416a76e5ba077449d65c216572819d5c6b424982a2756ae616. 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/UKXN22272577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8334ceb4278c57c520dd6a5ffd6663c2d04a7a7b14c0cec273df6c5e8ff46190. 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/UKXN22272578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b346ae940d8c1618d86a18ae20d314496317d2d7d3003c15e9c1a38a33c1272. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:08:17Z), 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/UKXN22272580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91c076031f577a3b30af5693be9b837a235881001f6bde366d9531dd5ee1c22. 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/UKXN22272581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe36cffbba8f227becbc623d6c4d1227f44fde7eb0b2cc5a898935437c69241. 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/UKXN22272582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ebd8feec98105f1cd200a8ccbff2d89e450891c1ec3aa09d111c5064241090c. 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/UKXN22272585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc951cc2b91cca19d6fe08682329afb0294e29d15aa3d54cdeb340d87017e0a8c. 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/UKXN22272583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640d54dc0c2bb6a541640da070d1a8b76e96206b4f3e1594e5d276aca299d8d5. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:25:20Z), 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/UKXN22272584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab26c4659f9adccb8ce4e01398a4b85687e2f7ae86182447557ffa52dbd714a. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:39:58Z), 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/UKXN22272590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bdd23682ea74a923607574361e463a8f5daf8de3228dc417ae2415e9a372dd9. 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/UKXN22272586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330b53150aaf2b852b5f783d22b9b382c70864f2c8112e3bbde2cfead7a26f70. 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/UKXN22272589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6cefa4f4a8dd5ac77d2d7e023873204e71797accd1d41b24d9866b7ca73e3ee. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/UKXN22272592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b60d532855842180d80bbcfc501f679a5e008200b32f91ab952b7307a4330a. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:19:37Z), 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/UKXN22272594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3874e57ac2ebb377436937fc9d881067950b2331686885a5ffc1b2febb56e910. 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/UKXN22272593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9900208d93f4df371de214f74d5678959d5b02ee72d5a497cc12e28e21ac857. 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/UKXN22272591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ee0711cc4b412e3dd3b1e0b89395cb1363d3b1c8766bae1359ac33c166ce45. 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/UKXN22272596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de521f6609ee02d25c86636fab6c0a2e65cf1c107e2fd8b2c2de13091707f08. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:41:03Z), 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/UKXN22272599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b5072a6699417fff054d44851dcf1cd4ee73df1747fa6ce09f78a84babff25. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/UKXN22272597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535f5557256e187a332aa71bf048fcd1b040c5774179b223b5d02053776493ad. 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/UKXN22272598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911e1aed90074b70dd11ca760c3c42786aae1edebf31fb9f4b7b636c444bec66. 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/UKXN22272595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43a0315cd13dd210da818b172919a681c79832ad03e72240dedad5f56646b63. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:11:14Z), 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/UKXN22272601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20819b58bd534ac383103791424287546f5e49000e83840c011fb05357ce2d60. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/UKXN22272600.