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 0xb038032fc7e343a365a74b195cbd4e137d9ce6ea4aece62e846bf19e024bdb6a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9bcb2cfc-84fb-4fae-80cc-68c4eeaaa13c.json and https://artists.proofprofile.net/proofs/artist/9bcb2cfc-84fb-4fae-80cc-68c4eeaaa13c.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 0x908869a88f99d40a715c6720876c811a54244d43ba15bd350f9b9c1ab20c724d. 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/QZNWU2181775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c9b0ed8a8220945e7757ad22280815e2c85e9bd05bbf544dccbb6f65baa322. Chain 2 (Bitcoin): anchored in block 958399 (2026-07-17T10:39:51Z), 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/QZPLR2187993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283433aab3f49f4044069581abf6fe2e50d46318afde9e065ca6f00d9c99ceb1. 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/QZHN32230017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757f8565d81092141bee31acc748b3f97a856698e093dea2aa85d2e20535542b. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/QZHN32230018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25afa18b8531cfe4b4e0db94d1ed26979a08a707a2fb59f9cdf1f5873493ed6. 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/QZK6N2286023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583522a558b6de539557524b612c2ed5367d7493047167f3a39ad5215dd1421d. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZDA72375817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a1f7b03279290a24d33a9162ddc979c8a25d48ec7ea53ec9a53b700aab1f12. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZHN52326382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec439f3d3ce7f88af8761d588b21312faab3d5c189a0ee94e95ccf2a47e67d4a. 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/QZTB82340777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3378206d029afb20e19fd7ec31776fa237352b345420d4ec701e71edf278cb57. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:36:00Z), 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/QZFYY2448088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7bc243d64939d2721687a9f0c8d1e5e97a3052ffa872afeef13a1e2b40d962b. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T05:52:55Z), 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/QZFYY2448090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca0b43f691c248cc0484925e12ae111a311894bccde55318b6449a4a83080aa. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:29:43Z), 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/QZFYY2448091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012a37d74d67692923e1ae8d864a09ceff65a6ac921e39ee6b3b6ed09a9e1bfe. 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/QZFYY2448092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2dbec2df2c8d5b597e4bcd49f5ed7b9cdebb1b37ac570771e341bd1c4f0015. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:43:18Z), 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/QZFYY2448093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795e491d93c1fee7eec60c52ffd0e0c2724a0d9420db9499316c9b86e43362b1. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZFYY2448094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f03b644a6837598020aad581a9eed784491a45a37c0cbdc2e47c47ab4c42ce. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZFYY2448095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e88b9fbe89be7550d84416b1bfcf44f098b155cd4bf0121ac08fe0a18b6c0c1. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:27:31Z), 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/QZFYY2448097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdcd607c0f8ea762ef407012743a33c876f0dbd2e18392b691525df28227d4cc. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:52:09Z), 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/QZFYY2448098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa06aeca2c77d460beaa9b153820f47dd913d074f3808b70eabd055f56fae2d. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZFYY2448099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8188367ee4273c715b301ffa164818fcbd6b4ed67a063da6a560518c4ce6a2df. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZTAX2456356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65011b2b8a03638fb7a0e51b9b9bec1ad142b107e0064315233ed2526dce1fd. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZTAX2456357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd54919b048a4aa806a0e273bf8a2dfb9da382fea79ad25f482ba117748f966c. 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/QZTAX2456359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ff0885a1e02cbb5dc250e1149aefa4ffa5dd0304c2c7484b3b49159e30b1aa. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZTAX2456360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c069c29d18487c0d86e3770a4c99b6ee30fdb82e4b3d027a7877ab1989a18c. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZTAX2456361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c248159c482444a52803c8bea13716da404e72aa7b6abcb978b2b45f3b4c684. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/QZTAX2456362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d492bc778dd996de093f2dbb79fdc15db4f05c9f61c5911dbc9572c3da0bec6. 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/QZTAX2456364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ad124959a3b2575c6c8bb5c9fc42f7787b6f3d66dc1afd2ac24e3d90a41f46. 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/QZTAX2456365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872cc9e7dd505befbcfd72e66e625e966ec84576821d65df02063630065c6917. 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/QZTAX2456366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b783f8186321bd3bc5146b45c542691bccafff73cdc9603ec5aedaf6caa1be9. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QMSAV1105817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283b84df256c455d7358dc12ada789d68b2f2ff0cb2e3f1a579448ae35511089. 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/QMSAV1106088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e51b94af23258103320cbb2975ab04e80cccfa50d5c8eccb4134938dc491dc4. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QMSAV1106089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867595c022ed06e72f61b964ed9924c9d6525473d634124e511d15f4e02fd77d. 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/QMSAV1105761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf959836b43fdceda364cc05a03617314ad932bf9e39377782bd73624964d42a. 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/QMSAV1105850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b783f8186321bd3bc5146b45c542691bccafff73cdc9603ec5aedaf6caa1be9. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QMSAV1105817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91d5b2ce9f0b5b82e3661eb4e866eca2c3128477548c7e500d4fc92321e3aa1. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:29:47Z), 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/QMSAV1105985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5fa63a95010f6863272678be5e78a4d14ba98e7f14c605aaf29152741c8311. 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/QMSAV1106225.