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 0x5e5b3871a477867000835164cb1e4a39557dcf5289f7f807e34f601252354511. 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/e7619418-ab54-44ea-92c5-ae401b1fd698.json and https://artists.proofprofile.net/proofs/artist/e7619418-ab54-44ea-92c5-ae401b1fd698.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 0x4599bbb022e8c50461575fb3bab3262da982e9a206ad7d57aad972479f30acb5. 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/QZWFN2371841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f7b4d788b9375a8aa4d92bce81181cc0225ffc809a65c79401de54c26857e6. 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/QZWFN2371842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501a3b8b4d361a8f28e87887f69c0fa212deafaef7fdd00cbc87578db2194a46. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZWFN2371839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd13943f05690b0dbe65cf35d1f3cd24fbc845109141ea0adb817e6f7b12806e. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/QZWFN2371840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550d4a6e4609315e0cbae4b4203d91857de5e408b73b73448f693be2b6660390. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZWFN2375650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a87001399b7cc294f5c78f8400e41d5ddda0f6254de9928ab0ed1eace2119f. 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/QZWFN2374889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd513bea353bc49656bf7d7b9a9c0eaf035b728159c98836e252218620539c47. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZWFN2375653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c1220537fa797c93f22d97b9154d3ca2039d6820f875ebaadeb3d52996453b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZWFN2375655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57bae55b247b6aea5b0681bdd377cecd4e696f6a2e680f9357d736e71659e8ba. 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/QZWFN2375649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340bac88fb4662a523dfca948fd45a2e06920ca3c26b5c2f7824a582c99e347f. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZWFN2374894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3684f6b7604a1ab3319de73327c234cb73c9d22e53040a9d231b7f3fa4819f71. Chain 2 (Bitcoin): anchored in block 958573 (2026-07-18T15:49:54Z), 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/QZWFN2371825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22268411472a1ab7659f95920e96b42d4944be088ab7070850f210ba5c959ac5. 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/QZWFN2371826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72daf6c14fda04d4e3f450f8edbf495b657aaf128e8ec787857e9c9fe1138c06. 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/QZWFN2371827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da3c4afb147f2d5dc2c197167c0a7c39548ac8bfa39014fbcff413eeb2adbf0. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZWFN2371828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71db567f8ffc6ff6ab4cbc2bd4ae467372d9c7cd3818286f1ad20f52797eb796. 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/QZWFN2371829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd45714d279ef0d587f2808c733c2fca461abc6c73d61d017f7bc9f9716699cd. 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/QZWFN2371830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7879c7ad2c5953904df00bf822d87bd215ae7e286a1db485bd9bef39d247c0a0. 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/QZWFN2371831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a905da73787bdd588d456fd73e136d298672cb9508a67df6b349ed98ccd90c. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZWFN2371832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd003710653db56efb6127308a615177bf33e20121a2a1f5c5f5ed8257dea72e. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZWFN2371833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2d0fa84c130e159b499ca80b88b42a6f16d2b2950154c183a0d455c32dc4b0. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/QZWFN2371834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9da6baaac7e403c6e318b395faca467745abf06146015ceebbe47dfaae5e6b. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZWFN2371835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0555df00ed250f0670a65219db5a216e07d2ed66a0d40909f4d23811e54a2a4. 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/QZWFN2371836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d0be0f6e8f458d4d5772fee312ef6e1436d1505df66aae3fff8e6d1c640fa7. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZWFN2371837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879037f0b6ddf64a0bdf7120e7d2dda81b2bae20818d8d5d2481cb791301a8c0. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZWFN2371838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec40de9e8f45879d1295d13e5b543564e1eca91b6ed1513df36fe76601459c27. 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/QZWFN2375647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12696912c4cdd330bc39e656ffe96678ed4264a769b2b71303754623df33450c. 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/QZWFN2371813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa493ccc76d9d39db90fbab439f38dace074829c3d1017f8852faefbf2a412e6b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZWFN2371814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44377c67b7ea593db445ffc91ca4e7f16c33e23cd5e328aa0cb0cc94604d610. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZWFN2371815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50ecf760e9d260d8355ee7c1fbd16b321b00b513c14fde0d55a77b133519719. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/QZWFN2371816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ce1c7e3034dcfa0a463de2f189ee38817b4b3c18c6c53cbc28a871b51a0338. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZWFN2371817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ecf7c69134d768980d0b64071fe402db0e8aad0cd10ee10afb8d1ec0aee05f. 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/QZWFN2371818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd25d1c9773f9361644cc92935e0d21c107d240b461214dfd2982c19339f279. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZWFN2371819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3031c988e9e2995863e19dd1d9288ce26d4d626888c0892196c41b61decf700a. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZWFN2371820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860b615a1027edde7347ab0b38ea7356b858564a6884afa4083c00c47ae61a41. 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/QZWFN2371821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060502e5a1e7a8211819fd5a254e69abb473b5c77cacd51314650f89e15e2664. 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/QZWFN2375654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81678343bc00648c7e8ebd9a8006a40b2fdc4956c0dae9e3fe7070fca19d165. 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/QZWFN2375648.