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 0xcdfe993f6a7ac26a8ec05334e66da7aa340d7259ae87ac342f9720a92684e952. 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/8486a8c9-0eef-43fc-946d-43454f3b0435.json and https://artists.proofprofile.net/proofs/artist/8486a8c9-0eef-43fc-946d-43454f3b0435.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 0x5dabc5114b72b9674351845c5f989a502b6974628693420f8f513f68ca44bf44. 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/TCJPR2249486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba9ea3fa45cba4688a4c73b32dfe13f4cdbb5e1eca24e7a7005c088bf8f508e. 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/TCJPR2249489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab7df7637f2915aa2c70da8bfb3dd6855ace8858bd4a03a3e962f83d624a725. 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/TCJPR2249491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dae76f37e610fc04d9f148332369a4ff3366924bde19f1b87f8a5fb823277a6. 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/TCJPR2249492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd700c1088b7b63d52e7faef40e89efe6b31aa0c3832a4ab8cad10563b3718791. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/TCJPR2249493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0077e2c10f9965dd3e5dbb76c41f915bae8c0923d12baed29d67670a236102. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/TCJPR2284856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c679c96aff3345d7d70fe9aa37c7d8ce468fb8a24356c5a7f5d03c2d225d42. 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/TCJPR2284857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9a94546328fa7257f4f8e7197fb529fb42b8c49beede7f2487116cc1a5cae5. 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/TCJPS2219102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe767569b2a571b27286a1984775f15f36334e713b65c329d0716fcaecb162820. 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/JPVI02203262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378649828f0ba0b0ea64bb91e976f01a7a9759b048daf8601fa94f6876cbc217. 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/JPVI02203611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1951b3327a94e50a026078eb6b27a689013f557e8f2e1cc2852eae7aa5fb75fa. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPVI02300874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2752e67d635370ce3b42b846bd7bca677557aff53b7f19efc65ea1347f00e8ff. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/JPVI02301918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e91b7e5dfe2491f205090db1a1d1d5c83e9a6754c8372b8425be1ff5db9f88. 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/JPVI02302635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5334633939474e3f2af75cf1a1354b8cd7c681d3dddda9479caa79018a4e55. 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/TCJPD2578672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b63ef5f0a56e1cbac1ab84f999c6c35b95c2d3bdf57962973e0f4980fd206fb. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:22:12Z), 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/TCJPD2578693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb886a8d0b20348e3fe8e6c1800cd22bd71dc3cb0682c28af8986198826339576. 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/TCJPD2578698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f15255e84ddf7427e435e367bdbe92ca63f6d870744acb9997354ccac00e541. 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/TCJPD2578713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ff6aa3e9fc6b57f2f9403beb3dd8acf84eca893389857af48d61c23fa99227. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/TCJPD2578724.