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 0xc7e90fa14b3896d5638ec6be4466d2d0954dd99bbb812caf0af775ad3f4814a5. 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/0a3d76f9-c583-4a01-bbc1-ffa056877f03.json and https://artists.proofprofile.net/proofs/artist/0a3d76f9-c583-4a01-bbc1-ffa056877f03.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 0xfc97375510233d6190ad88ac8396d178709828bb95b6b97226a4da77fab32fc8. 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/QZDA81993744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88e852bec476e6494e9c9e735182d96df33d277dee24ec2ad064a60c9566b12. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/GBKPL1974371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43075de31ddeeacf975bdc6c31114d6ef63275a51be970b96dc0d047c17c232d. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZDA71953127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf403499e43b1e007cfaaad55c861887ea15c12b5d375def249859138e5615509. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/GBKPL1974367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8bd55647177a56ef42953ab87c1ef1ca8433fcffeceda9d2ce464a389f20b61. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/GBKPL1974365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1fe3a8e1077785cba6131ed912263a5207236a48cbad250d4b1096d3ce73346. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/GBKPL1974368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f796667a27c4febd29795a33155ca6d435334e9618d626f0e140002925bc42. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/GBKPL1974362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be566d61200feb98c217299609e738940a861f67d17d15bf32d0b43c28db947. 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/GBKPL1962073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51ea6d4fcebdd4a7fa7f83da2d29916f2f7ac99c134ebbc783c7e2bf494c547. 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/GBKPL1962072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cfddf97c79c9bbc839e5b1120f6afcd141ef3d68376256051ab18086633afef. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/GBKPL1974363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa803eacfba8f10e88c0096edc1f96c2be95111cd5ce3fb1a598d34f6e73aeb79. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GBKPL1974364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4f82bcd70d5da7da6d696c587869770576bb33bf2d893664c0b7d925667a6b. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/GBKPL1974370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a202e66c52892104ca242be7954f78ae7bee9298197a6a5d630de0664ccb2d8. 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/GBKPL2004220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4a72058bd6a84b528fed2bc9169bd7ca95041f3db60f70e487e3adc1f4b902. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/GBKPL2031067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8861c45e564714bad97b9909279ebb35f464138ceb2fa66f05af681efce7be1. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/GBKPL2020814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302eddc0e9c6538fa2f3c6085b3e05c550074908d2207aac5e331c880852a0db. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:55:43Z), 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/GBKPL2031070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7f57f02880c168a48c5ecedb5e95c7febd8d6473b89d409468fbb2c73b1437. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/GBKPL2027043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc3d49916b3fca0c1204d147005ea0ef292db4b16f88f5d57243e5fa081e5ab. 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/GBKPL2015795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c6490e0882f540bc2eb973f85d83eb4bd06c41cb7d6c425fb8f7fac6338560. 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/GBKPL2031073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c612431702130e981f13d642c05836955e6aead01ec14af1e660d62a981dfa. 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/GBKPL2031066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0f7b6b825a9064d3f07b7244731ef88f8507be0e99af5abf1825df381e2f2e. 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/GBKPL2167894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a41d81b4d702b65d1a421d8b771d4a661373e6399d0d1c3c9276cfed22145a. 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/GBKPL2167893.
‎maybe ‎i ‎should ‎have ‎read ‎the ‎instructions ‎first, ‎oh ‎well
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868c34dd139d344df1d6f8b45c57952d51e79d61c9a8b638f177ba45127fc151. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/GBKPL2167895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5e120c9e90e054cdfd61f218b8a4a7898126a6b5c2e7cdadd1ff5b36a388fc. 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/GBKPL2287480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3869fe8277c03d510b6f122bc3915a4f4e4fd856b6a7b6299e628876ce86df. Chain 2 (Bitcoin): anchored in block 957554 (2026-07-11T10:39:45Z), 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/GBKPL2287482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0fe76d12d653db0fe91ad9cca16188799acc38d6e9addef02a294776dddc32. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/GBKPL2297572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c24259bcf69a40a52a88a91ef08a3f8cde442c3b581ffa69538ed6d3c15b91. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/GBKPL2214940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad34945edfef7e2b1c5e1f0883b169746c355375c64dd7029262472808cfff98. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/GBKPL2214939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4da6d655237d3698f1cc5718d750966af59be970f29829a67a6c11002bb329f. 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/GBKPL2214937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73643fa283bfcb70fd6cf52222a0e9e10c9c4821987ea3559ab580b646ace24. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBKPL2214938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4395ba874490e06f4b8b715208d28a914b5d6d01f3e3606d5a3830917dba4445. 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/QM4TX2415513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38cb0a8e81eacb3a0c92855e1c16a617b31ad7598d7165dc853494210f6701c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QM4TX2415512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0950b744a9aaa0cd3a78e69782c963553b591cf89e13e0096fddd2e30b4de7. 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/QM4TX2415514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd267f0f7cc9eb50c9c5e5d21c74c5e8a0bbb166f75ad248895611c450efe706. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/QMDA72445977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf133df47f8c4133181c4075063fd0994afb4fedd741cd103e93d87ada3000089. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/QMDA72445976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf133df47f8c4133181c4075063fd0994afb4fedd741cd103e93d87ada3000089. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QMDA72445976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60e46c4ace5b79bb064674fe5dd9bcd66ee0256d04c29531fc142afe16bb75e. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QMFME2476479.