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 0xe40a3c53ed2cc723e3edbbf7925350a720def5ac6423e2c9572a9eaa1c01bbac. 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/bf578ada-54de-4c29-836f-dc30119bb973.json and https://artists.proofprofile.net/proofs/artist/bf578ada-54de-4c29-836f-dc30119bb973.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 0x218634c3ec1547fbd9c065f31d656516fbe6308fb0bf1b96625d277f8cb581e1. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/TCAIQ2443935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef8b22ad2ad5d55d81d39568807c2dacf5624fcfd07de91d7eb510e492f71f7. 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/TCAIQ2443938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12085e05f9b060cdc46f6c0b77f629fc4558481f88eecb07d50b0af9b688bac. 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/TCAIQ2443941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3702404c75333007a2ee15c80ea6f76ebb5e1c66a206d2f8a5491debc64150af. 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/TCAIQ2443944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e2c89bd393b48236064cc8fd84b945b9d6e1dc178c65f68a95c7522703c5be. 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/TCAIR2443947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb04cdbf647554d5c64dd7e2bcfb0653674a5fdc4b4931fd2bbc00eb52b12fe. 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/TCAIQ2443951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4499495565fc149b800da6b9a4ba3ffe09aee41c02b26b81d6c8ae009ee87d55. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/TCAIQ2443956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe996ac66c18a66418d14e0346585734f1ccf87a970025c8d22190670dc4b4792. 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/TCAIQ2443960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed74f885a29e059386d3da326d533f50333c1e54ef2ea151bc1be53db5fc5e4d. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/TCAIU2419399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380113f82c68acf58450521da2860511e35c5f9feaab94f4b9285086aa3ae1c4. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:34:58Z), 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/TCAIU2419401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f64d1365e0a89780f5efa607b58b20d38e19167079d07b51b4f740bf0fe5db. 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/TCAIV2419407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea70d27de077a3e435497cf950a3b6b2fe449874e070f4b713f1c7d4aeaaa51. 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/TCAIU2419412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52d1d5231e5bcea6e5705eab8ec7cb7855658c50743758952bbadd52a983f26. 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/TCAIU2419414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f6f1514fec406600909d99e86dbe6eed49dc210b8ff22825227228e777c43e. 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/TCAIU2419418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee2b5faa382c3ea9936168bf68169235a81c0db9f4f864fedd1344af8345e8b. 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/TCAIU2419421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f350f8fa67c723c0f5445bb5de2dd885808aa49b3e4ab7e4251d4cdfdd7fae. 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/TCAIV2419426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84a0d0473f63158e9676f5d6b35cddae2fa98714d840659257d3a10bd8c3a4b. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/TCAIW2401114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84cb385f5e1bd263f4f7442583f5e15d80bccfad4928dc1495f3d9ca6c641b50. 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/TCAIW2401124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626f524e91efd7d6dd71c101f45d557b744939bad8c6b56ba6f82a19f6f75b52. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:43:10Z), 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/TCAIW2401130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4745286bc9b1ddfbf20d0d3dc909ff169eefd43b688867117e8d65d241830e8. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/TCAIW2401137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ae47b84a63f5b1a264af6776ff4e65b09ddb0f1fc559307220f5c038f53958. 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/TCAIW2401141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd22a58fe9e79b75ebe8d921729104526744a266e72cd62b5d48213a1fbedb3d. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/TCAIW2401145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa80ea68ff69a9dac7ed4378528eb74e1bcb6b53a8a6c6b66866b88a085549d. 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/TCAIW2401147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7996f186aa319fa4235b6fb60abc746abf7ba439b24aeb8fbe02d19e9dc7edd0. 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/TCAIW2401150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638e73fc61b87f8ae560f0b390e08e6501e9c9910ef3ac64034c9e3c636b73a6. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/TCAIZ2493276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1b72b19e2e36ec5183ea8dd33a39032a00e8e113eda6107cd92858ed596ecd. 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/TCAIZ2493280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc187ebb948eb293ef78eedd2e7548c05f5ba500f3a0f3e2ddf5c703f7765e5f. 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/TCAIZ2493287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0eaad2d08680718fddecff35ded0b0a258ee3def499173a34ec19c25a09d320. 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/TCAIZ2493298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4e80ee199affe6d510cfb106affba86d0f8d406a4a84b8435543d1d0187b2a. 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/TCAJA2493300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe32ee67f6343ecc44688e3f20fbc1bbd1238a67abcd27606295cbb4335fd23. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/TCAIZ2493304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a5475f21c87ddcaf018d3d56fc4ed28e7fd1c7a06fd7d1ae8d401634b548f5. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/TCAIZ2493308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502644b5b29c6b8212429e162869802633cc71b74efb03028e67b34f511189bd. 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/TCAIZ2493314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251b9a0244efed9c68afb844ee40a01a5bb7fe552c74ef26e460626a8fbfde13. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:24:16Z), 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/TCAJK2517299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9ae6599fc9bee1a7f14cec78140fdf5c3568f4bf27e1bdb8bd41982938fd6c. 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/TCAJJ2517309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a36d437056d1c42355bbf888d4278ddbf80fb79fe2f87809226f4bf6c5d475d. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/TCAJJ2517315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf3ea8d615c77554db28f0fe823be48b38b960c6b509e0c767ad2df8893b1ba. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/TCAJJ2517318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90f460fffdd26a3f9963daa74c7b9b2848b68a6e439fa5dc37ff28769525e42. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/TCAJJ2517324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609f1cdd8afec4cd1789018866ec4a1bd8d6d964d7d05f5db006f9ed400c35c6. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/TCAJJ2517326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbffcaa0e20c99f384078fc1747860c1212a8a8e5aa7a72e967e79eb7660354fd. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:39:42Z), 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/TCAJK2517331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x166fb017333b42b8a9d965863567a7683707a54f3842bfed22b28021c7b8c8bb. 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/TCAJJ2517336.