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 0x4daa50c7f65d2c6a118d92efbe0425c9013d67b8cb38ae585a7505985ebf5f07. 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/a046f443-6d79-4482-b18b-b96cbb7e0035.json and https://artists.proofprofile.net/proofs/artist/a046f443-6d79-4482-b18b-b96cbb7e0035.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 0xccf22cc5b48fc95efe641194b6084ffac04d24cf51ebaeeef74c024218ad80ef. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZTBF2395708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7da47eda28c614c2353f05cd2b0e3c167f842b11baf86d3d46e3f461d9f96a3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTB72329864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe32a6bd6484c6f677ac004da07420f67ca37f1f363f15546441a6c0a521ce0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTB62335020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389d94362326e895b21d9ea81e174952eb0b432c9afcdd75dcc831a2224de5eb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTB22349442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69624e07063208f79258d461152dc4ae0ab9dd3893e1e6babb06e52c93f201cd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHNC2305083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a445271840a98ef1660396a17776b45888aa05556efcf34ca84fb2504b374a5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZTAX2287029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6602e3d79cb4fd3f02075167d0c23fd13e808228407b8066b3e83e3a399832. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZTAW2363677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a1b50b9b2b43660b08dc3ca9176a8a77f69f8249b25c1b7d3816530df8ae1c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZFZ22421658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ba57fa648c21b506984e712fc166892a68d6c9c3d57b3b63162c06a188988f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFZ62471285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82aef6a921167b5943704faeedaca369c310cc454ca92cda48115814c0359524. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAGC2267668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd70d0a08b0ba99986af39d697aef559957dbdbf8a859baec3734634a5e48f5. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NO2DY2400192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ffa55ce9ee2792a39cf5f5cf234807b1231736d78aedd3c52d517c3cbe2e5c5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZWFK2303784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37351f2157447f2eb791a7c4a47acfbdb5eb9dc24e9cb19f3936228d75141775. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTAS2343568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560426e01d2dfae627a9c38522dee5f4144257f6dc6313e201ef18dbd7b017fd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZK6Q2429307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8e990fd84d7fea4345eae099d86319245e73a7138a2ae85edd7d2c69874d95. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZFZ72433497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9a80664ce85d7754c5bc8eb851953c88ff57664e26a9441dd1088fe64c7dc3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NO2DY2400457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6433811a9b3ba68df2218b5506b214cd4b5c42d6749e99112c536de0e354fe. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTB42367190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc377ec44f4e6a2a404b138170dad8a781b9b3e473ebec92e5e16c96c32ba0c14. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NO2DY2300100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d10e320210704ec15a67edb6f108345313f24be95413ab0c610b71bd8c9f8d1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZTBD2417579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6cd9afbc663b75292354243a069a227a354b9bf64548a939290fdc902459d6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZTB72462959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c9db18b3ecb4ca9d0b8eb876bddcb8d6def119fafac776884cb4229d5f9b43. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NOX8G2400221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacdb107c0de86e458bfa5fd14b115db3814db35d948a417e9aeb30490b790798. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNWU2441268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c26b19e6440c0ef5a82280acac31fd6bef24f3f86beaedcf7fbb794c890e1f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZNWS2448204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3020fbc9803640a9cda425af52819f476a236ed374c2bb57d7e5b1923ec195. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZK6K2480920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67009c1b77c0853c3391b2ff7b3f4634fcb27641ce14933a58da2feb3da6c8de. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHN92486188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3907971b29f8ccfb22752ba87645997dce449412a7b1898dc12f1d198ed5fe. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZHN62458279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b799621250aeb84624816f588ef43a000720eb68934bdde8e3db8a68185d2da. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZTB82380024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93dd87d474c685a9067c2793e0d3d28652e0334711489709655551562dee68e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTAU2307223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2bd4d93407bc04e670b6d6c71436a981b1817771bb1d57d452acfc8d8c96757. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NO2DY2300400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8427476e18315bffe91a942b72d6c28a9406003b78f8b111f0e46757d0785e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZHNB2319811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b61d9e60f0d1b2636b0283a503ccf395a1946f5559502b9a36cd603cc33cf22. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHN52386250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef56f74696bae43d224bf2391844aea52135cc7d9ded61eb802770adc18f179c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NO2DY2300140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36032fe2f0397d104706307dd48cea06f37a3b78f83399a5f6e6386884c35663. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NO2DY2300150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb80b9033b5cdb838d51cf7e7338b4394d7923e4d7f4775983a6bd935588e6e7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZDA52316018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842cf5f3679352e3c2d293a2f9947f2368f134f9103a69b1d44259260c406f31. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAGF2297872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57b31569b42e22945d0c0179d4fa231497a5381daaae82b6860a3e68dcb2a69. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAGD2266423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d7fbc9466e5f97358151cbf0702745c6aebe7ce576c275a682e95bceb99d8a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTB62211500.