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 0xa2f850cf9ef827b060f64edb736e11090856bda5921547fc6e1ba48dfe9eb736. 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/d68d2cab-e705-46b8-b88c-51bf22c87f40.json and https://artists.proofprofile.net/proofs/artist/d68d2cab-e705-46b8-b88c-51bf22c87f40.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 0x6592fadfd331d7ebddd1c178387e393bb49d658455cd9251b5355ee20059324a. 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/QZNWR2308554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d8e13b8a76aa6a64494e18b41d563da64218ed787851490d84d0670d2c80dc. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZNWR2308556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f89b3c90eff8b157ef5393724316e22947cbf0ef24d5a64f42d9d3f3cd9ddf. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:05:45Z), 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/QZNWS2344031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66565665f52bf450853cc7f345df05abc5d2f9c1edaff28a6ad50118762bdc4e. 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/QZNWV2341298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84a51d1a9a2681eb67578ed1429375a952f7508e8b1243bb1114a77c6cced78. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZPLR2364009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51198442ff521f596715b7c6d318efe78d8addef821edd65b00a69d0922a4330. 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/QZPLR2363996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ef95d5ed934e6c16d2133ae4b96b87606d2826fa98d39be363bb4f678150fa. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:27:47Z), 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/QZPLR2363997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58f8cb0f2c3e0a58112df31681057e53425e0187209e52428ee07db20ad250a. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T10:21:01Z), 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/QZPLR2363998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf467b4aa46f9a88d3d87958996a8c8326e20a1769995bdcea6359e68f25f2e8d. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T02:14:33Z), 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/QZPLR2364000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0eb30162495d7a26c2271902b549d313cbdb6af6ed07d71c63cb3470603cbcc. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZTAT2389146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241453f9a6e542843d752644a725d87f4ecf4e3d615e4b8020904d86ea79f0aa. 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/QZTAT2389148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd14e43346e83c66cb77bcad61f988ff59b6d9decfa1dfb2466fe5524c82e29b1. 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/QZTAT2389149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf15532709d9726da3dd70d518b9619ce1a19dc3598737485d30d0ee9f04d68. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZTAT2389151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfeb29e7ea2bc42eeb516003d076416c2c0711d7e52b37d5b16d9d769348a6be. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTAT2389152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692891c240d843d9b9987a33151fa82c1abbc2db58ead5025659d14b5de0579f. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:25:34Z), 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/QZTAT2389153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4bf3d9e956110af737db1c273327c1b6536ef3ea413053a380fbded1b8e55f4. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZTAT2389155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadbf082e1a305704485d14b7134b11a42dee0e684d4d637f3cc107511cfcb520. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZTAT2391421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f0ea327134690a60f9bbfbf8f4e0e5cc8af79d180ec689b7254e9cebaa2657. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:51:23Z), 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/QZTAT2391422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc840ba1b9738a4be45f2cdb088079b6918f5233bbc25d334205a1baab50c3bab. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T06:50:47Z), 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/QZTAT2391423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd80f1abad73f01c6c24a7bf252096f4229452446fd7aa4694b46510880a7f4d. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:51:31Z), 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/QZTAT2391425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc295db109b9c4ff9ab91f64b44a7f8fe404fbda0aa4acea616f34233cb1918. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTAT2391426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2816908c259a3cc122703d7ca27986d8e6d2a412fa5ff16277eeec3dea33a8. 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/QZTAX2340011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9118b1b30bd8a0d12b7bb69c0bd169e3a3305f9ca13360d923f2ad206a3f131. 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/QZTAZ2355288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974bd54c76016044ad4966920456f56b7011ffb32a82d42cc0453385802ea690. 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/QZTAZ2355289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5510917c17f114752c8308f6b6bde67f60e140b548a901e7a169d75a5eab9f. 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/QZTAZ2355291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04177ce7319a032f20d17de30b3a9e8262b6a241cc73bf8062b8cbc06e2ba167. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZTAZ2355292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97b4ba770a1497b83976d4e29756453e0b544a358b8d75c5004920cec968eaa. 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/QZTAZ2355294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c5613ca82af3fd9afdc770bc7acda03e81797b6fb7b6b65ca3f4598bfaa4ad. 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/QZTAZ2355295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c41f7e47ef247fea76e6bc3bdfdfeabd1750687d9078660ba72c31c76466ad4. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QZTAZ2355297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb52a6b500f539b7e2fa89e80129a7be24bc24b2d651445f18594659b70ac05. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:59:55Z), 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/QZTAZ2374427.