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 0x172adbd609858ae55c4e729bce6108db57ad130480b2659d3a3057459361c1b2. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/62a70c9e-ddf0-48aa-9b32-2cf498c64c04.json and https://artists.proofprofile.net/proofs/artist/62a70c9e-ddf0-48aa-9b32-2cf498c64c04.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 0xd268fcc1583d704ea64683771b2f94fdbb2dc37c5242866eece86d234c82bccd. 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/DER372125601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0dbc3022aecd6063c13e86516193f28b2ff207c79ff8f53f72dd6e1bdd8c4df. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GX8LE2328094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832cfcb4a181fa1062b658a3257df76c6151691c2a8bbb7b0fa70e04e3c59be0. 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/GBLFP1568740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d5126f0a38065546329ddb29f75f5d64e8ab62250b4e5a24d10b136dca14f4. 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/GX8LE2341717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd780f1b6d0f45d43b929e0659603c0dd10a082d0e89b245168ecbbaaf7cc55c1. 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/GX8LE2376192.
(All I Wanna Do Is) Decompose (With You)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ce94a1a200f1cf21f71afc1a6dfa4feafc8e41416aa7df0589339662e88631. 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/GBKPL1520183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db011ad0be94f753512f58bccdc33a167475996d9351dd3870ca3982c89fc52. 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/USHM82239111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99c6a4480269de1a78ffeee5bb1c4f42926aa546b4859f5693466f48f4f531b. 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/USHM82239112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b537303d0075e675edf2356f34c349b96346b9d51eb0f975791fa054f7f914. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHM82239113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd43ce3b5fd85f1ce11c1842bfed1ae527908b9385cd53e87be4bef573dae87. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHM82239115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b70cf8ac5c1b4bcde1314871f7be58f329c7771eb309eadbd3f863e048020f0. 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/USHM82239119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380fbc2107016de0ce8e6f76f3128d11480c547bab18d49e2540111425fbe180. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHM82239120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55896047ed3dfcbc1a362b42bc0a95c71c4cecb3b5ecbe42779f75fa18823169. 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/USHM82239121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e1267755c0d90bbcbf417af2f96b7859266c0dd3b3e3d6f958682958047714. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USHM82239114.
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 0xf70d525b79e2233d7437b44ce7f45cc5077249592e77a527dc52b0303c9e6115. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USHM82239116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40124ad08a59c89ba1b1cf67d4c0ece3342574020ebdb3853d17def32abe5c3f. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/USHM82239117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8bf7230374600b1af2b5510954a2821621d52da92bef3bab17d779589c1df0. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USHM82239118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080e1dbea88b425ed7fac6a3fe77a841ef6f6fb723032f71bc99483cf1a6ec2e. 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/USX9P2427398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87a67b8057e63e5a3baf8a0a2b53aeef7d9a9b51a0ca53d113a72a92acf1dad. 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/USCGJ2410262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19b2338d17c90e4279adb5673530ecd942417ad122a44e6b3712f2f3da58c45. 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/USCGH2431184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0f158216e9d1daa2766cd0eaccee0a79293a47958bfbb0cb3494b372ff558e. 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/USDY42130614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa1decaad95f8165e7102db45f203c9d2327b5670278cf64a5b24e24619edbf. 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/USL4R2023049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99527386477feea4f0405d6ebd3f92270aa63609dbe714e7ca92cb6c7696dd9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHM92061319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a4dd07acf8f8395606960084f81069146584a8153f2b628345b14a465993ea. 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/USHM92061320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77b8e4f0e1843b446e465012fef0a82a1d9899529581211e96e8bfec8e6c25b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHM92061321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa39f20192b18b1a45611c9b51fd65da9c9e8eb015243ef439eafaa4a65a0e3. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/USHM92061318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248a73608e84b487a2c079d8ca28d2ffd641eb9b47d44d61f407e24f7c706e83. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USHM92061322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013053c1447845fcdfc1bd23e2fc5abb1887a1e82fd67e4d56e25c72a9d856e6. 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/USHM92011179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a1d0042fda5adddbf85b4cd5e814e112125d18688e4d02021bcf660453aa77. 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/GX8LD2218447.