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 0xcb30e2d0ad73a43085e4bf232b469e04035a2322392211996eec64130d5f189d. 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/3b85f8cb-3038-4d34-92ae-d6e43e914969.json and https://artists.proofprofile.net/proofs/artist/3b85f8cb-3038-4d34-92ae-d6e43e914969.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 0x4ca9e800a2895c3eaed673ca7c365490a1c898d3073e21ac455dbdb68c91a789. 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/NLS6R1877782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5fd7f108ca281f121401b5b457a0c44f125dbf3089fa9301898b75d0d4a4aed. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/NLS6R1882542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09978da2f2332bfd047f46202cdcaa718f4bf3da359c1ee4100dfde6fb60a8ce. 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/NLS6R1882543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1da3de088aae239fadbfcbd8287f8ba6919b197198d68ef83c1fbea89014f37. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/NLS6R1882544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ece34a37852824bf13e70bc9773d7a4b5e1a0ed0fb09e9710c117836b028d6d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/NLS6R1882545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5e41302a6569a16c063e645eed25ea782d93c4835ddd1bc00d2d1c194eaece. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/NLS6R1882547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f2baa8265946c99349f96d547d3437f32592ced92e3c64f92ebeda10c6a0d7. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/NLS6R1882551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77824cccdac16a1df7434db625beabb260905de4fa047b70f0306dc2a82dc7eb. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/NLS6R1882554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b546002812ab0e48bd15abd5567a66a57e4667807882caba4de17bc90067705. 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/NLS6R1882555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dfcded31625858af91ff112aa5e27fba5b44f621f09a5c9a8d42a3cd0e651a9. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:39:59Z), 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/NLS6R1882557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd702914654d1f14f487a7e9272d76d6f6a926b2cd7d2bfd880e529afdd16bfcc. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/NLS6R1882559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a94fb057c7799cbd22a7ba210da04a24ac741b05f51ca442c993efa49fdd58. 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/NLS6R1882561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6b33fb0b48af5c6d725741cb2105835a0c36759aef54c0b0a7a3fe2bc11c28. 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/NLS6R1883956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed45c8b9f31bc7f9982215855fb708cb2a01a17c6364762f591a61157e89abf. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/NL1AP1940684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a9f53209f2328b6a6b3261ab82c29ce4f3a34b3e67f15d9e98bd4eda6fa1e0. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/NL1AP1940687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d002863f1d0e3db31e87c64859f7c69f994fe3724997d3ac0cf3c9373e900c4. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/NL1AP1940691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916c54031da70efc6a25b138038a4b6ff5eab9623bdd69a43120050406c81413. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/NL1AP2083710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88d5d473cc28e47767686dd55fd634c804323af43fa2342902019e9f9c31848. 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/NL1AP2083711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6505d996dea9553269d1ac0ded39b4b61ec84b1ef00dd8c3d21679d8d5f689. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:41:09Z), 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/NL1AP2083713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a7d404ebfb2164d08e8441131e42df5acff8efe4e4f7d0519e4139942be88f. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/NL1AP2083714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7e151074d8350b62d68edc7a25ba3411a275ce5eb169e51cbbbb25180c326c. 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/NL1AP2083715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468ed200a55ee1f943e2840ff1a3e1e6c836f9282c4ff14f974748ca3a93f351. 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/NL1AP2083717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5588ca3818705d88bf718f8032369f047ab5eeed6ee64380f0562a3fb1353ff7. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:41:32Z), 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/NL4NL2215660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556976e482db51dda80749feff919f06d6830b00f185d3cf6d7a34cc79698160. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DEZC62317632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809800ce285f293ff06e59ccc3e2e35cb309eb5b24db314b232972a4aff7daa6. 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/DEZC62317633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a6eeb6742a16962ad320eea98b5664e3cd19c572607683fcca2ad11b85d858. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEZC62317634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0194681802699af17817fab5c3af336be20f4accfa7483a923862d00c4159f. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:22:31Z), 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/DEZC62317635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34eda9d9982091e678e7da6080ee216d519f7d167a9d5363140be7004709d92a. 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/DEZC62317636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d981878c94de1b0f4bc7b912a53192b50d8d0bf60c7f63b223c05198f8611e. Chain 2 (Bitcoin): anchored in block 957565 (2026-07-11T12:18:39Z), 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/DEZC62317637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226d3bfeea58467bbd945ff4beb312b5d3e7e827a5bff60ecf538edb3ab65b98. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/DEZC62333433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56fe206f47c99325ca8a3b573943a4b16ed3003ac99aa5f1f181d461e8a283d. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/DEZC62363835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7335d1f0cf3e63a6ee8f140e190bbb12e812c0aeb275b72716a35dc40147e52e. Chain 2 (Bitcoin): anchored in block 957564 (2026-07-11T12:19:47Z), 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/DEZC62382338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602613e179d817fb57f1a81a86692eca18277b7fda58140e3205b2488438aa9e. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/DEZC62389560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91688d470e3bbb6019e041d0ea08261f33acea9353c47da3b472ed65d75a6d26. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/DEZC62493264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8b059df3b084839e8e4dae90619661ae2e283f923744c7ffd13b886e7dcd3a. 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/DEZC62493269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de7baae7552678c4729e6f2887fbc40bf770784b63639c20afb16b12f9ccfb3. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:40:40Z), 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/DEZC62432697.