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 0xf3017287098d02921127cc60d3f810a82c17ba895d30653d7599aebe50a83b19. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dec6130b-0545-4bd5-82ff-be3de14f0a3c.json and https://artists.proofprofile.net/proofs/artist/dec6130b-0545-4bd5-82ff-be3de14f0a3c.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 0xe19cc5149be3d794b5919fcfb11ac3ddd5ff64a983d7d21595914f1946fbf70f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CAHUK1800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66eca3210063302c91e516a0f5ffca697c8c452b7019f0cf13b67c54111d42f7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6MZ2407755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc58a79bc8f71525051e59147b06f37ec76b9d030f2b4a0e03fc18ba87d928c. 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/QM4TW2445847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4cd5fd4939aa8339c11dfc063f8b88421a8dc2f5750abc4ec108c2004b0c3fd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMFME2322863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8d23617e161bac24f6d5fdf96c678f6bd35ad7c5a32626cec746504fe7c4ab. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMBZ92384471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17dc386671ba297b47372369e1b0657c439f9052228d2b221ae485e39cd2f83f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CAUM82200457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ca7efcfbd59cdb9d82253f5d755cd7c22c1ab1b0c8f594d68823407fc6caaf. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CAUM82200132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe909d9b1b330205cd837ec521d1b17d7048d5496557c23607d62b29103b1ce6c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CAUM82200459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f53fd1f88bd1894338a776843e791fba96c1ef77083939fdede4e4f1c3f3bc. 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/CAUM82200460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff664efd34ea4ca7faad4002ea08d9562d3bcfd0f771e04ccfd946be3eb39e86. 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/CAUM82200379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a966ce53382d1c274676915559be5985efb0f069b3fe8cd9869355f20143ce7. 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/CAUM82200239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff664efd34ea4ca7faad4002ea08d9562d3bcfd0f771e04ccfd946be3eb39e86. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CAUM82200379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a966ce53382d1c274676915559be5985efb0f069b3fe8cd9869355f20143ce7. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CAUM82200239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ca7efcfbd59cdb9d82253f5d755cd7c22c1ab1b0c8f594d68823407fc6caaf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CAUM82200132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb80171beccaf849b44249651e44882007054d5da229c35345fd6ca8b7eb344b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAFU2162242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d5205bd9591baf9138cee20e94fcde74d1af65f71140428319fe3512dfba3f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CAUM82100147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ef3101c88235849540cac944342b98f496b484c7f6fe6eb743f8bc5ada36ac. 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/CAUM82100073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ae207a157f04322d105bb95077c03e74d3b9a5c06e53a18f5d157081a20203. 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/CAUM82100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaef759804d01c7642c73db721519038f8a0acb6b4925e6e31f5c2306a4c71aa. 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/CAUM82100146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1785599bea4d763e8494fe22c7b8cb9fb9c349c7594bd4ff11aa42b751dca1. 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/CAHUK1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd261d802d85bf4c59b55dbaff60843ae330092e93f2f3b19b8ec10f270cb0172. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CAUM82100148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ef3101c88235849540cac944342b98f496b484c7f6fe6eb743f8bc5ada36ac. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CAUM82100073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ae207a157f04322d105bb95077c03e74d3b9a5c06e53a18f5d157081a20203. 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/CAUM82100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5f69ec7a8b4edbfb9c5503755208f82bf91368d507d51996b132432af4bde4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CAHUK1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8c1280d9bc13f819786a00fd2a8c7d19332aed614570441ec34918be6d5186. 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/CAHUK1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x673b5136dff45455bc641dfb68f90fab901848d98e0d639de071a7025e4fb3a6. 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/CAHUK1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f193b1a30acc4c17a4cdbcc0dc62773393e01e425dc21411cf551e230b0c853. 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/CAHUK1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc5eddc82d31599985bdc3ae5f8a78fbc6a2d2564c0b6cc92b67796a1e125fe. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CAHUK1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc934481b89003b0ee78dbb7e43a53c94a6d04404d0bb430d224ebd392476f0a. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/CAHUK1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc934481b89003b0ee78dbb7e43a53c94a6d04404d0bb430d224ebd392476f0a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CAHUK1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8c1280d9bc13f819786a00fd2a8c7d19332aed614570441ec34918be6d5186. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CAHUK1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f193b1a30acc4c17a4cdbcc0dc62773393e01e425dc21411cf551e230b0c853. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CAHUK1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x673b5136dff45455bc641dfb68f90fab901848d98e0d639de071a7025e4fb3a6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CAHUK1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8214314c863773a294ad73c8f30fb160dc63530d9d672a6efbb18d5043f8146b. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZWFU2527715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57fd6a5d6acca434703dd1b1f872390cbdf4f0634c6b15711839c48f09e2cf93. 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/QZMEQ2523013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24615074417c180f1a6273bc181b898934a294cc8bec625d5f0303a6233aa84. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM4TX2538891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f0d8cc5f9869d704936990a4277a28e173db52c0010501a6ca5a0415a9b0ea. 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/QT3F42411548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c98c84ac13a3ef703eaff6b25b38abfb08449928cddaadc3cda635d2b51a13b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM6P42454284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb80171beccaf849b44249651e44882007054d5da229c35345fd6ca8b7eb344b. 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/TCAFU2162242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19cc5149be3d794b5919fcfb11ac3ddd5ff64a983d7d21595914f1946fbf70f. 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/CAHUK1800009.