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 0x0d5f8fc9ae858cbb40b29e334b48f26638e724e82db6db7efc16ab5d725cae54. 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/f912dc74-34c2-4683-87a9-3d4e551563e5.json and https://artists.proofprofile.net/proofs/artist/f912dc74-34c2-4683-87a9-3d4e551563e5.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 0xd3e060da52dda3b0f2b84b83f4c0c5d0727c3b2db2bd2e71e11473eb2c7eab2b. 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/QZB4J1854906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d1f0d3d36ca41168c203a30f0cf65dfb6c70e67ba84eb17623ac83543743af. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:33:16Z), 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/AUBEC1826431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d1f0d3d36ca41168c203a30f0cf65dfb6c70e67ba84eb17623ac83543743af. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:52:30Z), 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/AUBEC1826431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f2fddcd229324eb63226a7d42462f64445399cafe44c05be0e281d9e4fd03e. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T08:00:56Z), 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/AUBEC1829243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce8b3527c535d8d65a67550f1d37ca511e18c10b432110ee6769dc927deb2bf. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/AUBEC1829253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab17857baaced03b4478f3d37fc5567e180e958dc05b55392dc9b019942c54f. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/AUBEC1829249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b4d282270f8e64620d317ee89923802525332789274a1f3f6ba76a18713e0a. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/AUBEC1829248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93bc68800f5b31c9f8c3a74bbd2acf70255e876dcbd64b1c0a5f317198c512e. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/AUBEC1829255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab17857baaced03b4478f3d37fc5567e180e958dc05b55392dc9b019942c54f. 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/AUBEC1829249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9931811b9c804f8573febd5ff3834fa07244312981b194de4f7cfa72c21db755. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/AUBEC1829246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37500802262301c7ebc2a875b75043964a93eee93ac3e8512f8565115dd955f2. 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/AUBEC1836776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37500802262301c7ebc2a875b75043964a93eee93ac3e8512f8565115dd955f2. 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/AUBEC1836776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe52d4e55fd7fbb793f7578d068c88bbd82b575b38541e564f20c2f3f974290. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T17:25:49Z), 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/AUBEC1841087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe52d4e55fd7fbb793f7578d068c88bbd82b575b38541e564f20c2f3f974290. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/AUBEC1841087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1dc6108d0b9313b39bfaedbcc66553a90fc78eadd626114bb33e26e15bdfc10. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:11:31Z), 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/AUBEC1990075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa66d097ef86720028bfb6d69e5c740f5ae5db65380b745c9802673edb6a20ff. 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/AUBEC1990099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c4008d30b0cfec5f124d52f600f97f8e74f9b2e4933caadb1a405ee7d20a2f. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:48:44Z), 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/AUBEC1990089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3789f0a9e99e8e69e6298953dab8d206c6ba443715f9cbf1683493cc1dafeb6. 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/QZFZ62182399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a9e566405d89fa1a9992319b7d9c3ced68053108d7555cc722533ab531ee9e. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/QZES62117941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63cd26f2f94bade7e9f5b31d1f390814ea81570a351acbf455a27d41a8bcf1f9. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:09:41Z), 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/QZK6P2101428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb24c1e4f4b463903f6948d2f69118e6e50c898397418a900c3dbb9fd5f0a5fc. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T07:59:27Z), 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/QZFZ62229340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6f8fc8a20bb84fd502f1429fae25a0deba2836cccd738909d7f256917e827a. 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/QZSYP2228766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99b1e12c2afc2d02764ebda3b98080133788b132f67be581c2c0d94ab7c6d64. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:57:20Z), 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/QZSYP2201470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7247361149d979671602deabc258ec6e8e9b8056279e032428c062c553e08e5b. 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/QZSYP2233198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c5dbeb4f54045deed30712f22c5a00218257c65d2affe6af2474bc5a06078d. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:07:09Z), 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/QZSYP2219588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99b1e12c2afc2d02764ebda3b98080133788b132f67be581c2c0d94ab7c6d64. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZSYP2201470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb379027ce45afca08ad0b6b23eca11fea11f135568c3e7ff44bbf2978cbd5d. 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/QZQAY2373861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdedbcf09f225b80e00933c55bfa4d408ee5016de916e4ba245eccad71487104b. 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/NZPB12302450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0f7994a9e5dcce0af352f07182282ed82e651714b9772dc07e2d371d0a3652. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/NZPB12400683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d5cd01e1d800d48686cb510c2770221472b537f2e3d71c757b112149a296cb. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:45:53Z), 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/QZGLS2558588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a3d0f91afcd60149b1293247e28e6904f3ce7d78a2b3431f30844949824191. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NZAM02000515.