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 0xaae012834e270c32e59e7a74f472ab0d41c4acc5f67d0904ec44389b4e6540d4. 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/45252ead-406a-4505-9a2b-05e643faef78.json and https://artists.proofprofile.net/proofs/artist/45252ead-406a-4505-9a2b-05e643faef78.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 0x2a20ab5d4a2dfae5bc34cde3a730b7cf6718f2438babbdb52e9b580d0e8af8d9. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USJ3V1259175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a1fab2a6945498713eb2c05238ef8fcf7625083417e89ce5ce2cb07a412647. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USJ3V1259176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3964ce90a3b0fb6d1f4987306b1e44dc2c3ef838bcf3b5d90ef97bc84ba22af1. 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/USJ3V1259177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0f1a14fc85311b20de604289bc0ebe9c16d305544a084c1401caa802898912. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/USJ3V1259178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf209a798a2de5dc263a8b8082f6a9c277c53d16e7a3475e90372ae51e839cb. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USJ3V1259179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd49a368d881fc464f6e508b184176fac8b16754a8cfec8e31e2e8f0cf7b180. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:00:56Z), 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/USJ3V1259180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c91d708c36407a78d147b3f9da327f175893f0ec232c3f3548f928be8d9eefe. 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/USJ3V1259181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6293b2a1702ed42706957f1212d305f83c07e131244a1011e1c454b137ac42b6. 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/USJ3V1259182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70f00ff583a26bf2ab1d3cd726a93ab40f4ffbff131d3ce1e19fa67fc1a4d0d. 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/USJ3V1259183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9716f0c65b2af717e5294cccda84a4c267ea142ab25912a78a7623887cd296. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USJ3V1259184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4622daba07dc8ee24812f0c5474cf15fb396d52602aacf5bb1e806adc5bb96. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/USJ3V1259185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818045d6e22a6e1387010f649d6d73baba9a2c54dc89e7d42d6b48bb1b6e2dde. 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/USJ3V1259186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e3ca8d7eac98717050bc20b57c0b0b5b16dec479210dc7f3437cce147e9c5f. 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/USJ3V1259188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703ee656e75da182d90879c34d106f6d0cf678bd07e5a5eac685b30e14aa7d8a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:42:24Z), 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/USJ3V1259189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe902b338578eef01eebf8cb5c01183816a89b7da921bd5bff319a96be17acb46. 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/USJ3V1259190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4837dcf99e8ac9b3b7f693a4b00a92c2874b16908c7201c3bfd89e08cd49e9. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USJ3V1259191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec2ec28df5c20d98648de36deb1d43ef2bf4f0e78131fbe64c33c1f57e708c6. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:19:40Z), 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/USJ3V1256536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7778b7d163d989812e07804e25080505011570f34786502abc66feae16edc5. 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/USJ3V1256539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3427d66089e7d4c855cba86d4e3b00db1f1b9d8f0ac5e0b49890104891a24b72. 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/USJ3V1256542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240031bd3f0a22e0350c6a93866e7872b0a6ba6b5962ca552d4ed1047c8fd62e. 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/USJ3V1256544.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2fb2fb60f9da32ee18ded17837bb99a80fcfc2c981b9e09e4b089d98e7bf5f. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USJ3V0959658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249bba96ad27e7f05d1988da951fbefa8c57e8b5de9e0d3c7993adaa3f388b85. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/USJ3V0959659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a55ee176c1abed84bef4514eca1b7ca30b214bb8dc414ddd2b76f6bfa0a866. 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/USJ3V0959660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa10f6bb2d8896468effc2c1d1ab15bda20fb57e0b2da5b0d5af84305ed4d21. 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/USJ3V0959661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b17ae3526fc37147b214b56a14c6100249a4a0fa9245149ac80448b5672446d. 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/USJ3V0959662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5503a4212f6084822e29ce06ff1683c65465bdc1f66d198d47651b7edd6193. 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/USJ3V0959663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22d64819783ec032391427e1292628908eb2b2d4b5d64f68d627e61092b3b6b. 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/USJ3V0959664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375c3bfd4879d4f6276e097dd3c92fa91016ccd0ca96dcb8aa989a8284a4044f. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/USJ3V0959665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71dc437f14453436db3570ab10a1b42d0fbca9864b4c202a528199b5f128c82b. 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/USJ3V0959667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a1916f3e2cb0d9b83a9ade6db4bf5dbb1af928dc68c6826c404eb86e8eeb3f. 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/USJ3V1260566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c104d407351e4fc51f289e04caf2c5d07fab2cc9a432f901811f3be775dc159. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USJ3V1260564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47252b6b295b1387f1dbd26bdff8e84b7fb073530261042ff2e0281890aa2750. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USJ3V1217065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c64f584720ccc151003cfec1c24a34ce821e0abc3e1f22fa036b484670a76b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USJ3V1217066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a4729e65a5dfb50df6f3882f753bc4c65a8ce004f56c3bcb2931df4cef48bd. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:11:45Z), 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/USJ3V1217067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b39a55d3665a789b33de90bec885dc5ea5ab0b6c2c46166c9e33f819b1e797b. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USJ3V1217068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0402bc383b52386a9671275153832861829ff18957885e29ab3bffd8886285db. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:05:26Z), 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/USJ3V1217069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c7375ee7a1e2f62d5db87097fd89ef419d86bede1542830709a7bd401cbc69. 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/USJ3V1217070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ff09120a72aa3cbb3d3d4bbfe6722446c6bc6a7d319eb96973ccecf309dd1b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USJ3V1217073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c5eba97f697428743ca63796b21a6277ec81faeed7acdedec36b4b63df087f. 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/USJ3V1217074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51b6cd3bd04735dc30035babfa719ffea85ebd24cf6d7963643d0c921eaf2db. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/USJ3V1217076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07870e64b12e6f44b9391e5f4c76714d9d86c47bdd06a367a2deaf989b3c3007. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:12:54Z), 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/USJ3V1217078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3c1313e4bd79c665aa5b4c6087acd2ccd1800300efe6c531c750a13e6bc93a. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/USJ3V1217081.