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 0x86c0dffa579ac7119d3b5a04d188fb8bc835c9ce956e3423c68896917080f416. 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/066cd876-52cd-417b-ba76-7ee753b10a92.json and https://artists.proofprofile.net/proofs/artist/066cd876-52cd-417b-ba76-7ee753b10a92.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 0xfa6054b05b8c8ba76141e0987830c43c5f8b7e1ae3b65e4c127d1996bf9cc224. 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/QZWFH2576448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1755521c883e60244084f4cc5f6851e9a8ee7906c50125b9f236e63d06b687dd. 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/QZWFH2576474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5ec6df41fe453080580a3106e2b2893574d8fb4db75418e546d538bc2ae833. 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/QZWFH2576223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f3f02a93c2ad3832e328da5d2d4050a4e56df332a7e54ef4fa2affabcf16cb. 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/QZWFH2576425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ae9b44ab930695e893560bfdb223138b1044235f7a03ccb86ea9014d4a2ed7. 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/QZWFH2576455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9beed81d3bd135e061118690d3e43acded1fc272a6b0f2d7a806eeb2ec9fae58. 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/QZWFJ2562731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c872adcdfe8fea75f631e784f1b605b6749fc0c83b79cfd02904c08d5574d5d. 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/QZWFJ2562719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13875f32f75b8f678386b5aebc27ba1f32abf7bb4990f0410a68f52f52b491e3. 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/QZWFH2576222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc46274ca2f6c4af7c0e1369d99800d348e641b81666835f0b621fef478f39c7. 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/QZWFJ2562721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81483e05dd9347dc131b4e8e2297bf47f65bbbc5c5ad64741737e7e4e53d4e6. 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/QZWFJ2560245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96784c538b14813bfc5dfafd6bb77cc566fde6cc75ed01d81eff6c8f62b84a1. 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/QZWFJ2562733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51add3b68d26ba757a8e18f2a9c9b65138be961c94c514a25e1f48a0cab5116. 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/QZWFJ2562753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba10341099474fd04cb75890000c93c8653a7c73b42a7656dec383e430689bbc. 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/QZWFJ2562734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f7028777da0aedd06b0b1050b7c56af0a7a26788d59e407091cef1655ac4d4. 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/QZWFJ2560579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981dd23f769234155db50263c968bab2b0609acb2dd0c8ef2720eca4a3eff736. 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/QZWFJ2562751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc13756a6d85d8126ab509a8ada492f8838bd541d52157751b032e20500e296. 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/QZWFJ2562757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aff31d95f5764488e67206b96e8d5c11043d780c3f2b52678ee5623cdb3ba96. 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/QZWFT2516161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560f0aa845efbf6ee478e52993bedb2e29dd5d65c4fc6f5ce0f560ba1e380047. 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/QZWFT2507004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e6dc1d6ccc4b91d30c754d8fb68799516e4dd781ecc412da0b6e5ed6732bdb. 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/QZWFT2507002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cccff0d5fc5288ae280621406e936406c6b73b589f0a9e5efd37aeb8b8bf5c6. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:42:32Z), 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/QZWFT2500992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1905fcb8aa13cbf3a62aa71d842f77c4aafe3063d28a5b763b856f65d77a2db7. 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/QZWFT2516183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ced4f75ebb29edc75312c24d36df9a8e0ad8fd6a539bac61ed2c1a4d0c19f1e. 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/QZWFT2516176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a9f32ddcdcea69c49d9e711efedb231bfaceedb10ed2ee9adce39d3ecb69d7. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZWFT2516184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2129b154ea8a11bbe776ab734c1d0172a9be506cc5743fd459ae67fec09520d. 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/QZWFT2504094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d38303e0bc8ea8a8eb3faa7f6e4120162126fc2e6c9d22ed3c3f7f7fd91cf4. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:57:36Z), 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/QZWFT2537794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb424ecb764864ad7d0c56264bb0c6b00f73c402372fd25967466eb69d9ae8cdd. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZWFW2582407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f69e78711b860be8e2e616fa41bb347a5fe30c976a770858adfa83a2d493f13. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZWFW2582413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dbae095869e4873c192722985e72262a8db15c8a832e6b7a3b115cf3d302318. 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/QZWFW2582414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ca15a27295249813b1b6ff644d8c415c4f1ba2f67fb066efc03a2b6329df99. 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/QT3F62530625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb020cf7c927212b57c292328dc28d9d790aef21608bda036abb6c1eb68e69d26. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QT3F62528602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d41875d0e1349ea61f3416afac1d43033c68b06623fd94a20db8b52abc806d. 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/QT3F62530632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd701c63a5e50d7753865b45bf4d5488c87971a06cac9fa2ae35388b9363b2871. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:56:44Z), 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/QT3F62528604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd662956b482287182ba9895fba3cc3487d2f914527ad91b05bb51b60b421bf0. 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/QT3F62533582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170382e94eea6f220aedd9de629b6b20c1cb52212148fec61302b5811ab12660. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:31:51Z), 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/QT3F62548567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cfbb184e01ce0cffd2f0506d8fcd3585ed752243cfd4015ac788ab73e1b79c6. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:36:49Z), 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/QT3F62530628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895b6203054e97e289ba29096ed781717b8893d05ff484c2ec9389c9f29cd2d3. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QT3F62548560.