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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf9d6501d5642b0e192431d8d1f3953fb77cfec5ef77a46777f3b376a63f981. 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/6945a05c-bce5-4f6c-ba83-d7cda4763810.json and https://artists.proofprofile.net/proofs/artist/6945a05c-bce5-4f6c-ba83-d7cda4763810.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6052f5aa741fe71d4745e837758fbb794fbd20f668b26dc3d7dae70ef5df6865. 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/QZMWW2109250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd457968ebd246e3190e99038edbfb9e10d5cb2167a4e2be6ebeb5aff3098b45a. 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/QZMWW2109258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493079fb62f6fd3d9af0718c4e0fc4893b6c98ef28f8013345946fd237c1324d. 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/QZDA72263555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf558af6ca5b68c69446407cb3fdccf12fa0818471be9dff46ef7ddcdbc4e66ed. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/QZHN42243266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2336b3848a70bb661af12a5d045e6cc4e9334a39527eb5d8d9585f707f598937. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/QZHN42243267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb59402af64b3ea4b3727d360d840d7cb374d70e66b50f6495c0bd4de4310cd1. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZHN42243268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc872215452d9b35345d42b3d77342c3ae55edfcb329efad59ea279f4c812a4cb. Chain 2 (Bitcoin): anchored in block 958647 (2026-07-19T02:36:14Z), 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/QZHN42243269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4ee2c6d5ec427989c36445e662b577c35d4145fb0860fb9df30c4b2a5d3c58. 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/QZHN42243270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aab0e2ad6b1e8565418068b7753bc248986483853a67a01edf38f7a08c44a9d. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T13:04:09Z), 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/QZHN42243271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5a002e31c40ac2db480d5102b85772c278bec68b1c905ff80e57b108767535. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZHN42243272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e907043f14f39b883d6ad6fd4b635746fd691e0bf6383400e107f4a85df86bc. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZHN42243273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa674b6ba76db1a1c23a86d823781aabd0ade302fa4c35a847e9c5e1f736fe5f9. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/QZHN82212602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d8e56da64932f498adfd51032336ebe475d332d399b1a7e5470d71dc63dd38. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QZK6P2285098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701168de3be51b868aa77d2782e79a7ca4294815a55d7e9cf749258c5bb21511. 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/QZK6J2201220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9617f5975f3ecf6fc84394ef39ea3fbe691bd6e4b7fec42d792be13216b95763. 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/QZK6J2201221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a3c34e0f606ad4f6e609f9445eff80cb241e33f0f55bfe3d6ca2b122bb5b99. 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/QZES72302725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7920fd9120e9f45ea247659fd9cf0cdfaf9dad2d17324b0cd8fa4342394ba16b. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-21T21:45:32Z), 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/QZES72302726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf171000c73ada83f023c79eb769edd682a0774fb1580da67d64d3d461373e3b4. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/QZES72302728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2689c43cb214402fd27a400d5f6a045af9ae7bd9b8e6b72e75c39de63775b438. 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/QZES72302729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749396f1df12241b6ddf8319fae890fe79b36ff505c40cff3233140aab9bf37f. 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/QZES72302730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f62e20d56f6ac92e13c9176fa499ab0950072383a5f88d14765e82d95b50451. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZES72302732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb463d3a7a45238c8f2a82b61435e5db193bb6a3c27e8a87dd34cbcd9b41e2f50. 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/QZHNB2312867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537fa236c9660c6bd7800446f391cac2de92c3ab34e3a7ea1da847649f93f421. 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/QZMEM2339512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435083b03b18e0504da338b57043c70717cb97b6a7554d5f213513ded939b9cb. 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/QZLBC2317777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37618b4726b105614c4eeaf3159567cf866cffa291d4a5a8b5b82ffc5dc5fe52. 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/USLD91751370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a25078ca66500cabffe7753e53cc635ae17a8c6827f787c6f270e6577a9fda. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/USLD91751372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf034e5710b634799831221dc405108aa4a84a3e3ed21828f82ce026a10284a. 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/USLD91752531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13696666435e83c89509a0216f68bbfd2c2a7b6eae38b7353eccb6a83ce1c60. 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/US38Y2403424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2060c3fc85f839dd4fba390292c42f0a59a7f659c3113b88b8e2400e85ef280d. 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/US38Y2405399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ff36400dd89376eaee383187fbe23af7a94773243b39c4bec1ba3fb79ed4ba. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/US38Y2405401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69527e1cda278091feee20ae0869cf4d5067ea43a7f48ce76362b3ed402b83a. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/US38Y2413077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a93338e5109d58d3110475c6be870b12f37206572a5f0665f6ef3fba5adf6e. 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/US38Y2413078.
POOTIE TANG FREESTYLE (feat. Nate Husser)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9040bff53fe6cb83c19a6f5a637f6ee558e21c6c823d1b8c365319818a22fc4. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/US38Y2413081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb2c60567961fd9014f3f1fb95fdc361073ed4996cdc499aa648aa126143f84. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/US38Y2420887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5454ac8106bff914b92e61f4ffd664111bcf3d66d46a5ab064d16f4ce78856d8. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/US38Y2427253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d6c2ea3fcbbe0ab16ee9951776d6f3290ed481d72b9dd9f90e003acb22fc9e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US38Y2408427.