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 0x4ba5c8631c251b0a17f36df3d772bcc4df090c277ab514d992750eb8a7187e4b. 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/a530c854-3647-468b-b1fb-a39b2efedf67.json and https://artists.proofprofile.net/proofs/artist/a530c854-3647-468b-b1fb-a39b2efedf67.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 0x305a717eedaa3ca23f54af82f643da2979d004791fd6fb297fb5d80ea84e2860. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/TCJPC2403272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559379c11fccf09b22b82102ca995f96901242085393918d3fdfa3106a2873ec. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/TCJPC2403300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf48d2a9d517b7f9208d7801ef37fb70dc943238cde1e73119aaa5a9b1ad436. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-20T00:26:38Z), 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/TCJPC2405491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c931d4afb5b9c09ad20ed437ee9815cf9d52bf16f4d7100c00b3bca041ff339. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/TCJPC2412954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6a8a31df178bfb7d1645292b2eced2c23b389451cecfacbb09df1fdd8fad76. 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/TCJPC2413185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104741496543672f297b99bcafcaa7b3c68bb40ee181fc4f84312d1f81d1e06d. 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/TCJPD2431174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104741496543672f297b99bcafcaa7b3c68bb40ee181fc4f84312d1f81d1e06d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCJPD2431174.
名古屋弁あんたがでら好きやねん
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb0685f71cb94e6c9e587898b3fc2a7253e77784682f6f2ad5c12dc16a0fd20. 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/TCJPD2582520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eeb4d2cdfaa676b1363bc2aed53fb89a2e045a90af7581cca25faa8641cff26. 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/TCJPD2582522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3dd9cbad012a682d08eda967f153947f4580db22f9853f3bb94d44e55c3bb6. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:54:13Z), 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/TCJPE2578922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01262c44d6ea32b7f9a1776ec02504a40df097cf3ea4b299f76655e2b57c5b3. 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/TCJPE2581211.
岡山弁おえんくらい好きじゃけぇ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b5ee2ea65bcc9d88bfc70ae7affaedd727b3411d0c29652d9ffe8b662eea94. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T14:01:54Z), 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/TCJPF2504427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a950168ddf7e84962b452b46cb5b6e64069f8cb6d36d05f3ca6811ad97ae556. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCJPF2549353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb3fdcf0fe8c32b395018eae40598c2652d22c73d8f82c266f9ae3e5311b522. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/CAENV2571094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6fdc2bdb5ccd4fd550015e09817621d2c0e47344985e643d54ed9b0a05840db. 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/CAENV2578539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f6e3384676d6250ae137f827757499ee0af02e388bb71bf8b433970d1861f45. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:42:04Z), 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/CAENV2593288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f564f72f47c3b4d630d88a49b7eb8e850563b327439c5de6763fff04a10db7. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/CAENV2599664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f22a0fb8f4aa69ad3040643c0e6ef03fecc3ab663003844116b877739630448. 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/CAGOO2502098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9687401514a9dcf475beba87a6f6e785bc525156f60a8aeb18015c652e41194a. 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/CAGOO2502104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bfc6b6245bd7e800990c24843cb60e8cbd78ec1106e47b2eb417f3256e57796. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/CAGOO2505424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb5d6c1acb10c294662015112fcf5798674ef02d66c8f6077bc52f29bd8df0a. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/CAGOO2521868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab661781b8ee6d41699f6de59deda411b6c28b0c90375823a6f5328a24259b5e. 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/CAGOO2527654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71d6e2e3a523a3f3f6665306e1f6ccf23de640012b3a8764ab7ecdf9badb59b. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:06:11Z), 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/CAGOO2544542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04ca593967e51fad30a08c7a02337f35b32fffac96a58b193de650f41fc5e0c. 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/CAGOO2542743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258ba48f87b20623103d3d4dd1bd95352a06d909cbbf4d4cc2fd4142fb151f6a. 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/TCJPD2407197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba659fb0cf277e4076c7a97bbb772f570ef8f0d414365201aa59fb9b9a772913. 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/TCJPE2580724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53dedce3df8356ce1ba81f88a0363c13cbfb19fb94bde602457a666ea662f4e8. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/CALVP2568278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb984fa24290a5b7afc34ea9217c684b6bbf4e9cb56d937e721e604136f3684. 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/TCJPE2512017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd88633841bd389ef07775f1da1bfaca0e81fb90c2c05c2104b90e5ffca5069. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CBEYJ2545342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1388212f6c05d502606f08a3dc092579e17ea70b2bca81ba50199639dc128be2. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:02:39Z), 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/CBEYJ2563219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f61fe0815396964af53ae0b2fd20e6c0b0743b787f7cfab2b140f15e4f1e22c. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/CBEYJ2563220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ab56386403e4cad31cc70b5fb4191bdbbecdc9f62bb752ce93a911b007bf98. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CBEYJ2563221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c861a9fbb27e62283baa3a2db618c8d1d4b3e45125dcdb95dd06cd243baf53. 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/CBEYJ2563222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadac9b776741bcf3a8797fadbf7532f60d1d4177a149ebe867257cdfaef4c213. 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/CBEYJ2563223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad7d7b6e665d67cac9bb214c25280d0bb310c8e22c833869c8908058fff36f4. 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/CBEYJ2563224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1022ef9bb808ee6963eb06c5f289657241f4e711128b47f7b02fedfa476493. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CBEYJ2563225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764624a71b3ea000101782821ed2c90377c842a9b51c13dddd604bdb007c4a2e. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:53:02Z), 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/CBEYJ2563227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e75e7f68c1984e122dd64db935b7191a9fb790e4844a6b4cebc56e3f670bb0a. 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/CBEYJ2563228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc6d8b0eeb22ef348fc3d2b8e1be40494fa57ce4b80808bd5850b8f7f977015. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/TCJPD2549865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e3e74c17c1b85f5f907af0df063bf586ad6e484363009fd981d6fab987fcd0. 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/CBEYJ2563231.