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 0x28b213256c00e89b0bd00a7c9ff2edc4729e7b7f9e4f26ed8f25592bcb1d86ee. 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/e7f75809-80af-450c-81a0-f4756bfdaecf.json and https://artists.proofprofile.net/proofs/artist/e7f75809-80af-450c-81a0-f4756bfdaecf.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 0x5f6c19ce812b2fad783a48afcf10c8b0e55e4b274425357ed0143fecf166bde5. 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/AUBEC1910439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c176df9a3d74a3395268012c006cb20d2816caba9cb5bcf5cdc688af5af012. 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/AUBEC1910431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105ba1f08c9d99d23e1bf09477c62362716ddda09af9d38e44600de10ad7f773. 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/UKR6V2011855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ac95af3bda50fd1d305a397cb5dd222df6d2e4572fcd1e9c3569b97acbb6cb. 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/UKR6V2012512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2a5e916e06a33a7ddcd04fbc40b2961fc0bcaa7ad0ada90ef170da006d0a15. 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/UKR6V2111646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d85f474e0f64ffac410d55b2267c8cab2e3ad9e55abd0a86760f03aaf41198. 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/QM24S2101993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21222aebb39bdd4c585a3a233577d8e509ce3ccf62880e28ead6814be54cca66. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T13:00:04Z), 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/UKR6V2115561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe973767d05ba1c076fd036da50c27902c5c1fd145eee43c106c26f892e607df8. 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/DEPI82111277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93fe67ca766e9983ee2f89a951e595b57f8b381618db0aae3cee23f64decc3f3. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:05:34Z), 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/UKR6V2117203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c55722d25941c7439896e8fe8737ff3b1c1b887e2238d1b2036b4426575e9f. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/AUMEV2175307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662e1fe030c5c136b463ebb11c40a6b312e6fc02c189237ba046b72d8c72be7e. 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/NL4WT2200107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4725d01643d3f2599f56e684c0ad8e6323070373fed8d79e324dd580ceb62b98. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:43:15Z), 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/UKR6V2212302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1852a19d0de4e54ddd967994052b60c828c939aef94ebfbbb9668f3e41d4124d. 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/QMBZ92280538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150b9e6815dd0bb648317f3be9a02a6d9a96d18c45f2fd5221ae69e0775d1ef4. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QMDA62253557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe681545b14b68d6720e33f27dbe1577f6cb6f80eba9045f3ddfa3de8b90546. 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/QMDA62258111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed1ef02ad0a535869a44fe65ae368de63acac1a2df6c2ec1e9c14111d53045d. 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/QMFMF2204629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14dc4e427d7f8c3280450ee6dcee857d517a16414840a29fcf71a3536f267d75. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:49:18Z), 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/QM6N22355860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742657a586547b28c32e54f75a97bcccab0fe6ea08ff0f88069d5b421ae68596. 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/AUMEV2357307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce95f4c726b58c8b9b6f02676e12d9166b52f088f519692adfda68a06e7e192. 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/NL4WT2300257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e1a1e9b90a2ba6ec69bf12cc44ecaf9a6efea68e766699af08e4c52a0b6bc8. 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/NL4WT2300287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b4e9456fb3e69cbc8c5afbb84c3fdc1fa14f53105244656b951219b4cb85bc. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/NL4WT2400071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66df4b272d35643c5d99ead8e57f6e9a51d12a02b4b11fe17b0020e62e116ae9. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/AUGBT2440473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8bec1735d950f80d4b25e35487859da583af8d7bc2aa98929ca6bc51bfdb1a. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/AUGBT2451279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaefe534809f2c5a969f58ed5b8768ea12ad83285511a68ea886d347cb6cc88b. 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/AUGBT2477377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa11d4a30a45df6c79a2528a57ae72b049f2a65a52905d84c42d07b19a14c6b. 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/AUGBT2489568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d86c1b32da7e58d0212358410926c6ab255ae97bd2bb89a0d4c6624d6c81a5. 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/UKG8V2500209.
Aemeralds presents: Library Aesthetics, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe681545b14b68d6720e33f27dbe1577f6cb6f80eba9045f3ddfa3de8b90546. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/QMDA62258111.