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 0x380390b4f5ea936dd47ffdcdec301c24832d7e8145f44659c7f3c5af95141b84. 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/23949f6d-21fa-45dd-8bf5-97ccd93ded50.json and https://artists.proofprofile.net/proofs/artist/23949f6d-21fa-45dd-8bf5-97ccd93ded50.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 0xea5f6dbd8965bd5567f288e67d36002d14be7cd3c6d17241b72198c804557755. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZDA42581523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4972e0da1980e3706db7077147416f9c84d51aa739a6069c3a3df015ec9d8ccb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZFZ22514162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1af5cb7db1c896cc1313176fdc75904f9085b79de3db7d9c62130d09742e483. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZDA42581524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1774253ac7fb35432363b791e3d25410f9418580330cf1e4bca6d7775ed05e2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZDA42581525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581e0e1dfb6fd8850f804b9cbab785ebec742e1585e2130b42b77150a91ca245. 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/QZFZ22516030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b67d1bac5c03bd8c9570e1bba11f7f6e76270c40809451c7ba11e04b08e2e74. 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/QZDA42581526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151a1356ac1c694a04c5a769dc3ba865e62bcbf065307eeb290a075559e857f0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZDA42581527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf651a2ff1834ad9fa4ac3ed134a0a2c2311b50548f9907eaa1f9c66cb788117. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USANG2432177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe98430265676282fa0a21600ffd66bb536849b5e5beaffbd12f072c1f16b57d5. 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/USANG2432178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1578b917692584f2ef8c7e18c02d05cccd96b6ac48a10fbb15b0dc7ca963a8ef. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USANG2432181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d306350382f0d025ed220706151be2a67dc4a07f3cbc35e423a696558c460d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USANG2432184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581e0e1dfb6fd8850f804b9cbab785ebec742e1585e2130b42b77150a91ca245. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFZ22516030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4972e0da1980e3706db7077147416f9c84d51aa739a6069c3a3df015ec9d8ccb. 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/QZFZ22514162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75b1a41a183bfafc35751d469efea39e26e4526f1b5cc433c9c6d0c2b1df4ff. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM3DF2409299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131a24a921e097077dcb072105a04815c6b3f60dc9b269b569613690a4b2e26a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USANG2493379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db40f8a25610b8035676eb5d540203fd6c466c5823e7df358faea36d8c805c3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USANG2498936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88b295049ea7a016411123b74c972bf27febc76480e1bfa3bbd68ab810fccbe. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USANG2490928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e42010d7174aeca6ddc18c02b034bb67208c8adcca50d6ca195a88fb1b111fd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/UKZGC2409279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02a9940dccc36086cc37a7f0da89937ba397af12271be93709750ff75ad7b98. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USANG2456439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2391ef28465752c9bf36643bc2d1e2367a1c808bb8ab759ff66ca04b07cab6a. 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/USANG2421398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f75c5c74a2d656e3baf781697355b35c38670397d72ea5bb734476853e3c19. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USANG2441727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe98430265676282fa0a21600ffd66bb536849b5e5beaffbd12f072c1f16b57d5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USANG2432178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf651a2ff1834ad9fa4ac3ed134a0a2c2311b50548f9907eaa1f9c66cb788117. 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/USANG2432177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158cb96521a50df3bb94f16c87c5f8fd3549429291a13fdb92c68e485e794898. 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/USANG2437891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8f2249386f09dfc5267d84def0d401066580acc4d908f770a637edc1ab0e48. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USANG2433470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed7dbc2219c1619e1a892354de67a3a53c85fcfffde9b6d9db16a7b15e497bc. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USANG2423626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08b3d4d64229271f556625f5c8979df2f0052701f17cecb4ae1ba9a7f8fc8fa. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US3DF2458782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ad7a612516dde1ade860275f17cc5692ac302321e7471deddb255eee440e89. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US3DF2493559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791226d78dc23fd68b3ec5f34e41785a7d2c460ffe3b587f72c4de14848324fe. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/US3DF2490961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7384db1344f6922516d6e1543b1d70954f40ad20e399766226f38b159ea9e4e0. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/US3DF2479142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd335eb7e2522e25075ff1bc003c79f51d1ee9dda385cbadf671360828e59e141. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US3DF2468146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294019a7ecddd7644a1172fcd42db0c6d7f5efcfe15e662f637c6b3d2412a6f6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UKZGC2404466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb156f4f850c3b8d04b45a6c6eed5385d76b096069d1ca0210fcba91fc6d7c2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US3DF2454729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438fd98f79692913e70f05f64b56b7d76530f1563126edbeaeb9714acf04cbc7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US3DF2466922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75bcb13424200cdfc149992d66d838053bdfae0c3a4530c86a1e8198aff7d467. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US3DF2426658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ad7a612516dde1ade860275f17cc5692ac302321e7471deddb255eee440e89. 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/US3DF2493559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791226d78dc23fd68b3ec5f34e41785a7d2c460ffe3b587f72c4de14848324fe. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US3DF2490961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffaa2e79774b105b0c5811bdeb585d2411f764ccdedf2a3eef65b10826189ac. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/US3DF2440883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6756d78c18ae545cb5be24ec4a3d633f71a099a211b0a7b2195c0c926a68c1e1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM3DF2280728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd123856cbcd85cf72164a6a1a8ae73d0c6379014ca09d64ba162d0dce01672ef. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMANG2222030.