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 0xd53281fe9595efb4452446766b989bbc6b4a0154ebc9d0ba65bd9875efb58b32. 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/b66e475a-2d2d-45c0-bda7-d1ffb912f42c.json and https://artists.proofprofile.net/proofs/artist/b66e475a-2d2d-45c0-bda7-d1ffb912f42c.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 0xbed982bc7e68ce8cbd8243336bd006e76a115d749f7ff7a405b6214273967e07. 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/RUA1H1929962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa0ba3bd57405d213d65e2aa0797c9964e403b20dc62f10e99a680b9b0b84f7. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:34:43Z), 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/AEA0D1995177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d608dd8d2aeb830a89bbf6188b3efd46c4f2a19adf7d5293dfe8461ddd4cc0. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/AEA0D1995178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e6d22e634dd2f1f3a8d6fd907c58d08157c4146bf0a97f15f8f7792aab5ed1. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/AEA0D1995179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266cfefc1a043fcdaadb27417ebf6ed405e85e3b5bc607dcc05d3705bc90ce28. 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/AEA0D1995180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4bae359321cd424e84dbc3c7eacaf673bd345621bf146bb3b28c01a1a2c076c. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/AEA0Q1917759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9708bcf6ce1e03c7816e5e47f312cee1bd5f31f5d80d774bd8ac94efed4945. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/AEA0Q1927645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4fdf8002987c2151fec866d780209a28f9f5aa8b1f4735fcdbc5c2876c68d2a. 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/AEA0Q1946731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9da12c24a1604e1ab6c866e4f8c3b265ff949c8ae12809441e40553bf8a5e9f. 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/AEA0Q1983107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f7a04480a2a6b1cb9832890cfb58e88125b470b005566d19f94dcdd22f408b. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/RUA1H1906601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278fbaa5780a8fc2597dd2b6a754289c856b3342182882b2725d81a4d0a20438. 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/RUA1H1951811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c8a389c41a90ccc83504a23001991f710831072adab574810aed48812d8531. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/RUA1H2082917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65186ef489a6b36db65633e60565edf0086d08b0f75e718fa37c85297e05e87. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:42:01Z), 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/AEA0Q2071287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5f8b9fbdc37a198f2ac123a1f0a54b330e96edc48dd8ae796305cf9f8956f4. 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/AEA0D2043737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a51bbbe31d196d65ee3777ec5895589b77c628f9fb538925fb98286a62e80d. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/AEA0D2060818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb25b6594671a044f420092fce95aeb15a4ea3ac038cce6ca4f61f358490181c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/AEA0D2083611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ead1177dd59f87d29c3145214faa2bc45ceb0aadc285087352a253749beb4c7. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/RUA1H2145506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa1135d1e39f4a0df8e1f513524319b53ce4c18eaa889e8c9e1a48708698e69. 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/RUA1H2152367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d58a66f8c1e7eea1061938473beab0aeda8b9bcae631559dace42c6472ae35. 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/RUA1H2171810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aaee9d8c4b3d2b83ec02379956ef4a0805173fa0b17b71154f2bfc2ecef7e4a. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/RUA1H2198467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30b05e31cef0ca04166dea82fcb99bf840712a4e8d4f5820acb59ce15e6351c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CAGOO2103216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe708c2ea76fa5cd191b3c7efc6f7dae300365ed53664a577c527477f18bfe11e. 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/TCAHA2306622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac61a2fc8b88392a6169be318b74c85ffe41ad69e76e4e8c52321ad3765c86c5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DGA062478491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63349256bf846353a63b4ee07f7151b2935c89290e9f3e7a40c2e7afb4032fd1. 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/DGA062478492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7639b5522af8d5972eb26af446e5db06253989810632e37bd40cd6a70da2b4d. 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/DGA062478493.