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 0x5d0e509dcfea7c3b1f68bdbb40a9bc04ee9dd020fad351f6bf6a72bbd15ffd18. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/05b98ab4-3545-4dfc-89f0-50b565905c3e.json and https://artists.proofprofile.net/proofs/artist/05b98ab4-3545-4dfc-89f0-50b565905c3e.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 0x6f785cc85af0f8685aa190aad516a3d5cccc265e95ef9d7a1d85199fbb6a3a13. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:08:30Z), 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/QZTBA2238703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e6cbcd4bb823645554a62a1097d226d8f608d61c90541a8a9f6bbcefa64fac. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:55:16Z), 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/QZHNA2302509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7162568e425a57baee2de5a944d4b721ac29805884677ffbe3c3a3bb8355cb8. 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/QZTAT2358875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef412e0c44df44bb9828ba57f285a77044f5854ac7105bb5c6820b87b8741f3. 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/QZWFH2321322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192c8bd716416d267d479896ebc42cdfd6d32a7dd22794fbd638eb5a6bc1d333. 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/QZWFH2321325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355941d1bec5ae2332cdccc705f7f29c2d3f8fbcef4ede4f1e5bee18dcc00f82. 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/QZWFH2321326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb46ecd643492be3f5619f5c99d2ba751dd097e716bb6576cf293db75881485. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZWFH2321328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73340b0c5f6655202cb6fff026e8a0a0eab20ab865f95186192a4ce63ce9c7b0. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:33:37Z), 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/QZWFH2321329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13322cb6dd1d75fcfd332e646cb3156a515ee72d63720eff816c645054cfa18b. 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/QZWFH2321330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ddb137e4c4b1505e59e9af040235f8d3b838247b79539b66726a9aae71f458b. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZES72428404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5914ef6a6838e0799bcbc970cb1affd7ebd3665fafa25d01d97912bca413ee0. 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/QZNWR2423080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9000174519b3bd4a134ef7ce97eecd08872f519c255984c351582ad94b986254. 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/QZWFH2427173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5914ef6a6838e0799bcbc970cb1affd7ebd3665fafa25d01d97912bca413ee0. 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/QZNWR2423080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee28accd202a556723a5ca47b0a960faa6b4b13ba69b2ec2619efe69b4965c9. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:19:40Z), 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/QZWFH2427175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ca8c85adfc8819f69143880cc1681fa4dde28781be7cc8536df4d881ece42d. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:17:04Z), 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/QZWFH2427176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899d0d02e1409b44067e2c4d1513d8d7881f2043f1e6683eaadbf92ed26c9727. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:50:08Z), 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/QZWFH2472161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62c98491281b64219ef600fbc21edd1adb9083258e0572c6a12c339e79c7e9a. 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/QZWFH2427178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9180601893792f2eb6f2ceb6c070118088d3972f3aa06174c858a132e54faa. 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/QZWFH2427179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d124d90dc757e27e2a0b654734de7267535c38e425e4f81c97259894cf98061. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZWFH2427180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88153cd952da01b0aa8bb697a5b7c81e3bf9cf490f1afe387b9600b7d95aeda9. 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/QZWFH2427182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99de244af1200d624eb2f9ee3c785f44f3487259db68d8c163c915083591812. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZWFH2427183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda26e5c68663cd8670e8e75531b45eff973b2acc45e87b738e4f98203d1e3592. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZWFH2427186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54ca3fa0786bb4306c21bc2391fdf69be7598a3dde0ae610f5aa9363de1c9d9. 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/QZTB92526494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0fb4ee84aef4ae80581d3aa36f4af2f4cb713e98e9eb2476fbb00e7b6651f3. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZZ7Q2532557.