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 0x875a2c968ae8d84337273abaefda6f71aa86d412e1934c273943fbfac351c1ce. 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/784725b0-b0bf-4e83-9c21-75bb304aed01.json and https://artists.proofprofile.net/proofs/artist/784725b0-b0bf-4e83-9c21-75bb304aed01.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 0xb19258c6a86de8ddbc88722e9fa7247d4d67f071f70deeed1e5d45a3982b6aff. 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/FR2X41457622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212394d10e454a9bf153bea72765fc01ad66bb87769297756bf26f4ec894f99f. 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/FR2X41457623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5bf4d066ffdf3dbb393c923093de4298928bb9e04832a06c645f236ec91be1. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/FR2X41457626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84689d15e4e9625a2dbc90dba098e163abba0fd0745b946792a13edd86ab64da. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:04:29Z), 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/FR2X41457628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbac62f384a6709049470836399278a9f5d5c51531672871fc18b08d2766a84. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FR2X41457632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07387033a7cc5df9cd1b859d48d477252bb2d7de91bf249b9ceaed291dfa6f65. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/FR2X41471082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09fb973b2882725f374e01f543b3db1ac933c9bf627e08cc91c299e070a704ea. Chain 2 (Bitcoin): anchored in block 957596 (2026-07-11T18:43:56Z), 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/FR2X41471083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3705f0e064e4f00f107e69738cdf3f9960964989f1095f79e0ec468c406b9166. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:38:39Z), 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/FR2X41471086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1b9b926e5e218378e56a07567369cdb16949fa4a87569173ba6d8992f50550. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR2X41471090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0801efd54848ce15ed5263f79b3a0f04948efcd50b2c0cd05859710f8c4d815. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:28:22Z), 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/TR2181213704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9af480e2e33ced94f0b2ac8a05ad17961f8bf4f811886befdb725fb3e08fb4. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TR2181213708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6618846af96f815cc5ab6ada342c562e90878e42cb1c0513ba94edd89968f8d. 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/TR2181213709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c8a638513db1be41512430913e7f247c83d6441ee0d9de82032b0bd7e2183f. Chain 2 (Bitcoin): anchored in block 957596 (2026-07-11T18:43:56Z), 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/TR2181417201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4816911a1eac716f56c4b610fecf228bfc7be91b4dba252db12d049a618ab45. 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/TR2181417203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x250f734074e054d35ea450e7ee100fb220e0104be3ba2523ffc247fc244aa7b3. 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/TR2181417205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92fe425b5311a063de0b0b619ffd738d5728cb5d5f9644e23239546e3cf40a2f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:57:59Z), 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/TR2181417208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22effd4c10a8253ab1c77dd269741afc1bfd86665b3f445632e453c4575f8efd. 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/TR2181417209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d268858b9537ef35b8f5eacf7706c84e44b8211b59216d6067b7cc8962744c. 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/TR2181417211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b7d9e0ffb546b5ce68e14fef40896c5b5a0109909703bc0d17b07b2f6d46fd. 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/TR2181417212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ea28a6d1b911c73e4547f3be40b86d75619f5063b9f70c10f67ce2a6438d02. 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/TR1151602102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ca65501567fcc5f6f9e47cdff9b7424bfd321c40535045a48d45d92f115591. 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/TR1151602106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f931787f3931dad87f8f7767fd1f3d6d4f41eba28b2bafaed35acd43df4eb7. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:07:14Z), 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/TR1151602108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6917f79181a02b6bb1eb316e6f0a00590d8d38bdc5ce35d0a5da026bdd6683a2. 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/TR1151602110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c7684a41dc909ab15c75c5a44c53dc40387c397bfe41eb2f40ce27706afa09. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/TR1151700021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3423ab0e2672e0d417d13825a1b158e0d42a61591c340fa18abce4ea4890006. 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/TR1151700022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe122d455acb794240c4537602256249c4a6b284967530d42a9a9881793e3b08a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TR1151700028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24a95520b808939311adcee974111018aff78cffb8034061022e2f67a6f0fbc. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/TR1151700032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76f6433286397a30357455d0d9bbb9cccc8a8de31e9dec4f69f09360f5a8732. 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/QZHN31995265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98bcd4577a0a936ae03820e823f94818ba3c628d17ac4cbfde43e63f89dce535. 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/QZHN31980279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9f90ebacc962188bcd0d1294310374610fdbc2fbbc8d2c5a50484a16bf77d2. 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/QZFYZ2177290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda78c68a1665d36cc3a0dbc21b39ad8bbfd0fcbd1049c88548ed0f1e3d045713. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZFZ32189532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91597e95b89e74066421f4b1b78ef7ca0abf29e14fd978eee1f10c77fdbda20. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZES62130189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1273b440ae5d0cbca662098348266c6365bc7a085b11e3946328c00af6288ecd. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZK6Q2161921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574e9fcd09fd7ed7ee4e1cc606a618ea5e85af40ff3f038a968a864fd8c85d1a. 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/QZTAT2117713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80e83f845b54369c4f41b810c9870e5c6b9f32e82684754970fb560c71dd592. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZFYY2263100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ddba4db2bf251cdc4f6aa6d268a48e72d0312a2f5abe79e540e45f42ffa8e2. 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/QZFZ32255974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5382afb7a87408c45ee6d27a2384d7884a5113021430988525fc66c496850a3. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZNWV2245279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cad99417d4bd4d60460e62813f26d28d99cb12a5e9b62f10e46fdb6d2709454. 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/QZTAS2287000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80745d9ec55bd2ab4e2082bbc508297bbcacccd1b9fc2ef6e75e2db8e91b9416. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZFZ32383759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b9fa844603080f7fb5755d261cbba96c8ba6eb41941ea7bc60807a6825d01b. 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/QZK6G2348448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1163ed20bdd70d2c5e829aed2fadd53abc217900b62abefdee10fd2b010094f. 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/QZMEM2313316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779dc9268fc43562da0878f61d5e72bf41936aa1db8fdc8e7842976e225588bb. 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/QZWFP2376370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0db3c08859dafb8535a525e8d1aca6ca0890d2776a22733396436087a69b6b. 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/QZK6N2468446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57cb34ed4a1214bc230e04b976dbc9c3fbd1da190d9c35dcff41bef14647b546. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:02:53Z), 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/QT6EF2509576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d2e56bbc1f81ba313405d6a4617b00da61c8135bf45a7d2ec7c2de31bd2463. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TR0330806673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066928f055d4095da20fb2a5f0ec983be8fc9aa03487db0ecde362469e58ce60. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/TR2331400121.
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