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 0x27fe5ab5bfa38e434b21cf3fba5c139693fb8c540ee8072c6c2359544baeabe4. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/640f70a4-e3d3-48cb-91d7-17e84493ce56.json and https://artists.proofprofile.net/proofs/artist/640f70a4-e3d3-48cb-91d7-17e84493ce56.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 0xa217f0a12e7059878dba522da1380926aa4b200ce119cebc777df0c65189bc28. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T01:24:06Z), 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/TCADH1729284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28b3cf2ea44b32a734dd452b81316076258737e6735b0fa59ec2bb09cbbac44. 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/GBSMU6077994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058d37b8f1897434974e516c1c93fdff4ee384e81c9ea67733cd7f18fb59f638. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QM6MZ1996102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717888a669e0d13119e89de275731f8883f272a6ae7a0c45fde8c2fb6a6547b0. 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/QM6MZ1996103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68c865864c3eccdbf072b32f2512bade0ac70f04f9e06861075b8c8dfbb4dc4. 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/TCAEL1947145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7441046707ee4e53c28d3dedcea5d7b7fde75346959d8c229f062797cd4ac16d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCAEO1957985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7274acbde56d09e31f3e48d045f7b55024c7509f04b1eab8cc0048b6e8c3c6b4. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/TCAFQ2175170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc72da898e298ce05e6ed6d99418f98d22fdd1c5bade96643e87018c7bd73a7e. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:06:58Z), 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/TCAFR2155176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc1b5bbd877151c7ee2d6da30995fb74f4cc2912bc4260455be921c61ba34ae. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/TCAGK2241057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70476e8ceda937773e4a5d43f694684d8c0be45bbdd32c41d49987a2fbb21169. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:36:12Z), 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/TCAGL2229319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3668a90f825015957b9b754f60952a9964310836192d3a988a2cf4d90bd94d. 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/TCAGM2268207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1fd9a4ab68af86c5ef36999556eb16c933ee1a3a3ad715e6292c8bed0638a7. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/TCAGO2268237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb855e4d28f5f5d218bb22251ed05aae88adf31f33bf878b3bc92538513e878. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAGU2333763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6998f5bcb650cb20dd20a25b2d1fbfa080ee5cd77caa46f92ab94afb5afd5a32. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/TCAGU2386046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea50aaeb3017cca5ecd8fad3a71355e4d63b02ffd4b43865b5fc1a1489a39e10. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:06:25Z), 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/TCAGW2347237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c9c83452705ba882a5cbbfc69bbf3343f9bcd2063c1853fe821f3199b1ae913. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/TCAGU2386202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e11ed8b17e72c2d2a4965da277147a494bb8d145c90cdbd0c9eafb7843e44c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCAGX2345099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a2b8c0ec7a2bd21577a8cb52d92f692a01c0d348e33d3545133c1591798549. 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/TCAHA2340274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f6f32b76f6f6e05716714f595fd0a02b5ed3cfb532854f00ed1e92f0cd9a61. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:14:16Z), 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/TCAHF2322992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b675fe162d7c99247184fdc0b3ca396f8c048fbc36b2e07c33d08bdfde541d. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/TCAHG2322623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d62cc51e6f02c60ba7c5b39414e0f13ce3713f7f08fa2faabdbf476fe7ccdb5. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/TCAHK2332140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1387ff8d76ab5387902cbbe0f31474c402b87eba598a6f09996730344c5677. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:10:14Z), 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/TCAHQ2388374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788b040365e2d6f28c0d5bb2f4af89328c43023801ef8786544797247086b42a. 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/TCAHX2410847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959daa6cc6589880152855ca668bc0e739c2bb18f1ff58d6411c664bea8c0c08. 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/TCAHY2427035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1830471285edd4cbf29d9ce2ca6d87999d31a0e752f3d72a854c246f960972. 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/TCAHY2427092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1449ea8a0f9657eb2f80a6e914c9d98d6c94015d09bc6df8884f009919a78984. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAIG2421497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ebaac40d0acb55d657b06a772c6a8e43a1c18d5e0a744b6d7f220d7891959c. 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/TCAIG2421586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ff7bf7d4453cd8520fc020e7cd2b13a4ea36763b26bf11e7224ec85a073cb4. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/TCAIN2495306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735a41364daf2256a84597688ca4c348e24193c0e4263ac1a33e1b2738b1b359. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/TCAIO2499066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9898a610a82de9d295d61167fdf049021e5abcf47df765767d230e1fc914786. 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/TCAIP2453885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4c7bbb938c7d630bff1edbf961642512a0de33c6beff2bd51ebac0ebc11bb5. 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/TCAIP2453981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c876e835b9ef3b97566ccefe4d405597a1259354e36e7b5123b3a781235487. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/TCAIP2454105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd336b7b0a546c6cfce604923ba4b02408d94a02dc063e67687249df5af492f. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:00:11Z), 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/TCAIQ2454159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a424594dbc40f6dd8066072c0c59a5de9a53db5b7832d68f48750a7c1da0512. 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/TCAIO2454222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963aab052dbe1899458cbd4b8383683320f83b113d6bd8e6076b02ef2a43b4fa. 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/TCAIO2454335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87928bbd8a3b37ed9f6e323ec9b6cf42448e1b734ed6465a1b120cae56d6fa83. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/TCAIO2454466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca238ff72e9727356dd791dd5aabc7bb5763eca595ffd30aedcbe92de2c08c7a. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAJB2460227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9c0f93f96a27fb12616d6fc9b640197a8ea3a08ba2587c5d43612e6bd5dd4f. 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/TCAJB2461117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff37f909922a11803eb826a30cb17fd3d598e4914a1b9c146f09a4eaea9893d. 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/TCAJP2511325.