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 0x192b87dbe1e1e2a11bc1969186121b1079d605a7103d5d3cc17a60f9fdec9ac1. 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/1ee3a3fe-d708-462e-bfa8-a90920204c3d.json and https://artists.proofprofile.net/proofs/artist/1ee3a3fe-d708-462e-bfa8-a90920204c3d.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 0x0330045f3859e860abc33def213d282c9a2a0e6a5e10cfd91dd1e39841f9228d. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZNWS2035131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff647b265dce9a9bb43e80300d44c6b9e13970b429ae938bb4dc72dfe25470f. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZNWS2035136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb58f8a43db47d8bbde6543dbc06a6474e747295fe9e519bade09ce3559fca8. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T04:56:57Z), 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/QZNWS2035139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707e9e023d7fdd2ccd096b416225e3c2f237a19fc31f2aa916d9627a57cb9601. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZNWS2035145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6599d1fe49490b0c175bdeed885bb7f9fde212b26999a72512f30d3dd4085d. 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/QZHN62449614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603fe041a19915f2415c288e1ed4c8b1187d1094a3081622b4834c6c140d9e6f. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZHN62449615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a271977ce5376163829e2cdffe635a50ba37d4207b2b97b2556c91461c018fe. 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/QZHN62449618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632e83139cf3840bd331facd11f423b2b75457c395ac51637482d5e6adbde52e. 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/QZHN62449620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ed3f7558a165b1236665d705aec3eec0d7b247a0a9c5c5c19211af4c6e66b7. 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/QZHN62449622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc26fa72379f401605f81be81a5e9e0ae950ec40146c426f0e508eb946a2597. 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/QZHN62449623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d718b8ef6072166c4b4bfbb42796e495da4c04dd282ed7fe8fb3c3ba9246c1. 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/QZHN62449625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5694cd8fa37c57c85529160f057524a87532ef90d67a2b71cfdfc933469a1b91. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHN62449627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e70aa39e7d9c1796db2f6b4d77cd76140d6ea0b4cfba2964ba39449fd4d71d3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZHN62449629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314fdf3ccdcbcbece138c00209211b1bd5cfda46017bf365c22763ded4a47a8a. 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/QZNWS2034485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c99d0828f98cf676e76a09419108fa96d7d8b59094e9ff360e879397067e8f9. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/QZNWS2034486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0693b0ece7705819053774ec335d9b2407275913d404dd575ec3584b64ec24ed. 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/QZNWS2034489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996c77b062653d9b9d13473f93fe7f4d722fd5c1f82c78c89136447fb68e8063. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QZNWS2034491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e7070145accfe290cf04a18a2dc4ee90871e687f631914197d812fe10da47c. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZNWS2034495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2ffc20e2969b08b9970aafe5ebf5af893da497330afafd3080e67d608c1255. 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/QZNWS2034497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0758aaecd3a58436f55972bbd421ea024ee6545e5069de09ce1f419b6f3c9cf. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZNWS2034498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28fcf4d0a18916acd41c7f27e65dfcb3ccb07726917ce73e7353cb02b645a33. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZNWS2034499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9155e464e7f4d94bd8820f392d2085a2e075f9f47fb25f9ced48b48c1e798c3. 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/QZHN62451760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c3683cd8cb87fc0d3446340049771569c0942152b9cb9dcf0378ffe2e5829d. 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/QZHN62451762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd4cf1d7565019243851b024222cac3bdc1e12928bd0771a704f4387942adac. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:47:42Z), 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/QZHN62451763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0502e0a7ac9284c423449342a7c018949a9cb89b0879cf7a2d0c28befb5ea046. 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/QZHN62451765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625ea897b82d6fb75fa140b9cdb1035e4c6b3c8fd04e122cb94abbfa056d45ee. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZHN62451768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb48d5414a0dcc884353e2aeeb6bb0f54e958466de3c3ae3bd0d946f1fe3b47f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZHN62451772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f781a89000771417684e6622a60532e3363eb0f9733232d5b271e1e9836a5a3. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZES72103079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5734476e2eabb0d0c00c862d1fd79792fa97b73066311cfd43a7b03599f76ed0. 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/QZES72103080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a5bc83786052d234541a397e6824ba51df9020e430231df8b262f69d895a40. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZES72103082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15fbfe35037780915940f3a6f5aeb0da61bc94fa6e00195b27b1513aa22e8dc. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZES72103085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f34fa1e948857eb62774ede93e42a265ee7fadb73d3d458a7f1c40fbeb3df8. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZHN62451836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e5eb7179fb5d39dbf91141f230ce2f307888f62d0123299e2bd149e329d8f8. 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/QZZ7X2592320.