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 0x15bfb2a0c015a497b7c922133d596af6ac1e030155d025109d5e538702aa3411. 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/ee9f3ea5-2a4c-4830-97fa-ff185417e9d2.json and https://artists.proofprofile.net/proofs/artist/ee9f3ea5-2a4c-4830-97fa-ff185417e9d2.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 0x23842f3e3ec4c3826b0e01f77fec49a853191e3de20eca0e43725cb9f93e5059. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/SEYOK1543692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d5d74d4859f2f8b2232ff26ef3fe98f70efd4b8d6c953eba3ba98cd49e1e02. 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/US7VG1620326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97561b0c646bb58ea5aba1c98ba5941f8800a4c43de4347620f1ddd68d3083b7. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/US7VG1709058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803ac5fabbc0878e472266f59137afa33b2ae0ccf46582538a392f521a4efe7a. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/US7VG1742807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf38cea13825722061ecb13a7dce38cdf1295028809e67b6348d941ff7b856934. 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/QZ5AB1905457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e57ccabdb762a73ff7900ce693b64d15d5669a73c1d45e68594ee863e67cc8f. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:12:15Z), 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/QZGLS1942845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426401e1f548e060f9155d7f1e18adf8f094a99d770e72159c901bbb76a4b338. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:45:29Z), 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/QZGLS1942849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f3340ab5870c68ec86dc17626ead199f4e7e5a009aaaac8b1909054491a7df. 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/QZHZ51952877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c311d02ac8192491e54e37850110c0f7f9d5ff451c722c0d0b7ea9e4ffe27d4. 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/US7VG2014221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6502b572770874c6c63d4620fecf34c1196a7f6a89e1c505c1d490b8786f3e18. 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/US7VG2014222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf932f869479b42673da9a57169f5d2966efedad8b7fb7f900f5eb184b58e613a. 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/US7VG2014223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953d003b863558d7861f3e9b9201983086a92c6b8ff4aaf1e33c06b837263d94. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:01:47Z), 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/US7VG2014224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883a2897e962fb586a665e8d3b9700bc34f9ec3b6930cf1cdfce19b4b8298c65. 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/US7VG2014226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616cbe9b47810cfb76e9d982ef4f6d73ebbf97170769603ea9f4d06b525413cd. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:14:28Z), 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/US7VG2014227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30073418c58f2a76bd652de954d39b59752b14dee2dbff00d6fa895dfb18535a. 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/QZHZ41995393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b4cfa9e3549ed4d259a4cf4681cf44e4e1634f019755898f958a128ec1d18d. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T11:21:12Z), 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/QZNJZ2188894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d37179a6e8d79e5cbaab7184ed32bd0c0af0e1c17d8f9cb127d32b0efdf304. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/US7VG2246848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58fe71c93c4c3bc9002d92a2ba6f3a050f440d29fadf4ac7da49f1823b5809db. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZNJV2282698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe212365c09963a6a0f0ce8571dc72df033f61a8994f9199d3f34f8c763162b67. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:03:41Z), 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/QZTVM2286025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86fc546c1242a019e64ef0e86e2bdedf6fd846f92a0b809edc9c43d949b28690. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:23:25Z), 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/QZTVM2286027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5084aca242c01a6f10e9fe2a3f03d2260791fb49b95254cd33e615c42261d8e. 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/QZGLM2327859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5042101234ff1513e81631a7603cd3211d8e8028d96e9b49bd474d76aea80d6. 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/QZGLM2327866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c64efcc307533c24232c83cb5b07fc86aebbcd18d044fb966de5bbea55aa5c1. 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/QZGLM2328756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000c06566332a2cc71add0261c8f94e2391bba9ab13ca07199cc26592688542f. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:29:15Z), 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/QZTPX2338255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e85e4e36bf5d9fbe48565e266053be88adec77e626cc1f12cd051c0a4c544b. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:59:25Z), 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/QZW9L2378770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54019ed94ed7072c5c76fe2e9bce77d5c566e4371260f1a131e6212ece49161. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:20:54Z), 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/QZ5AB2459742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ac0ff125401195f9475f5e6b62f1d56d230453dc207f6110b8ad70915f8f46. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZGLS2478121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79f3ddfae60aa862cfb14a8ee5568ebcb108afdb2badfacfe5c1aef48a0eb8b. 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/QZGLS2478122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3262529b0d3521b401bef5d178bbee4e9dab1799f5733d83502a95331dfe4b. 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/QZGLS2478123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee5ef41051e1f4b39a1c772e34857afcaee4bd9e0139b3818002a8990711391. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:38:55Z), 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/QZGLS2478124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c64efcc307533c24232c83cb5b07fc86aebbcd18d044fb966de5bbea55aa5c1. 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/QZGLM2328756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36e1a7316eb873b9a816e5637d2884d02a163ac92805204ab47d0ba65094600. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QZGLS2478125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130724c11e8d67cb5e91c493ff6bd7ccb8b6a2c7d55c1d4749a01959130e8454. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QZGLS2478126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6f0000f31a28bfa0ff20f81143edb75b63202f1a2adb5e9681c367f0809d8b. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/QZW9L2301363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac677c1ffc83accef3bbe0aa901a0d57effdf84d8f221acd4cb470b9024cd270. 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/QZGLS2478127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b2fdb1dad886e29aba8cfbbe918c92ce22022e5302a87a2baae19fe0e8f0af. 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/QZGLS2478128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb68ede461e43bc4feb4b4475e37c19420bb6f3626d460d73081056906d2e34. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:35:40Z), 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/QZGLS2478129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4e3ff668f2446e46c1d1e15ebdee60be6024b541bb77f2c30b16cc658ed1b5. 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/QZNJZ2492974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102ca2106eada94e1ae87c6c154ace47cebb49a0015eae1d7237a2f14f3f0185. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/USA2P2506709.