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 0xf15ea606d0d2b0cd1aadb9f8adf4c0109d54c3bce82632e83d645b26baca3671. 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/955e2b80-a1a5-4d85-a6dd-d43dd4c30291.json and https://artists.proofprofile.net/proofs/artist/955e2b80-a1a5-4d85-a6dd-d43dd4c30291.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 0x0ca03fed851469c3f4b78ea490b9dd5497bf1f5611f91815951afc2cb075a212. 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/FR7O52300610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf619e25d328db7723c2b863a6613c13c90f6367107618750a832f0d05d73b3e. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FR7O52300500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2631f4133463bb615e72489c2a84042fe3621f9aebb8b5527d3dfd4c9a45353b. 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/FR7O52300480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8168e979ac73514b7072b1b9036cc61347a441af381c1af061bde8ace9dd620. 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/FR7O52300570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324b876912df2c9f85354564503769471d95ea63eefe1921a51adf5054663096. 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/FR9IX2301980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc67fcf8e9f08c164a78e7ba228dae885ed6e08b75be7703b17d195386ae36e. 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/FR9IX2301990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba146a6af73e3719e6996f76b2a742c541d0c7216a5d3f3d208ed4a8b76a3808. 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/FR9IX2302000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef383319e22d150119423ee2539a1a6aa511466d534f9cecce40f843a69436c. 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/FR9IX2301960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41d5e64422f44957a82f71fa2b6d254b622440d98c4eee652e5727fbd793d29. 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/FR9IX2302010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17183422adb644da0690e77fbea2493699c210e368ac6df70c33c9eacf98a81. 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/FR9IX2302020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d50d7139debf68cea6e18e5955f1e7cb566aa7ddd863b549d8799982cd7f47. 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/FR9IX2302030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b96f3f20f2ca8e25c9b1cc569cef6b764480456862596396f2686ad69f74f2. 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/FR9IX2302040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2631f4133463bb615e72489c2a84042fe3621f9aebb8b5527d3dfd4c9a45353b. 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/FR7O52300480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4816f606736bf2ed80f9d278e2ea11e48ac66fbf8119c4419c0ae0cd986812a1. 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/FR7O52300490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf619e25d328db7723c2b863a6613c13c90f6367107618750a832f0d05d73b3e. 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/FR7O52300500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569068215b625a174fc4cbf26c263cdb79ff7516f325f40c9560ee637c2584ca. 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/FR7O52300510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32681c90ec430630b7371641ece0562e6cf37541063ca0dd2223be86bcdba61. 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/FR7O52300520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551edaf52d8db2b745ff1dca5f0d4ee33d20406503f38fca5506802c08dd6ed8. 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/FR7O52300530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd008fccd697df36ed800b683f53a380a17efac483a8528889b06424463c88c1. 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/FR7O52300540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf577586300cb636a8da562d34eeaa45376874f9a3a4d7f73637a3eb4cfedcaa4. 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/FR7O52300550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333003c749ec71f1563c5a6a72ad0551f0378d47503eb1efbcd837ec0165bf09. 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/FR7O52300560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8168e979ac73514b7072b1b9036cc61347a441af381c1af061bde8ace9dd620. 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/FR7O52300570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94e5119b6cb5eef0e072f110d5df6a603127c279bd9c674abe9ffe6d511473d. 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/FR7O52300580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4378d749609cd02a9889d9d419e164eaa929029ad803541e72d8d9292b9ee168. 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/FR7O52300590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67085d79bec1d741561a784fdef9da9bed4f824fb53a7e2d59df07923426f08. 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/FR7O52300600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca03fed851469c3f4b78ea490b9dd5497bf1f5611f91815951afc2cb075a212. 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/FR7O52300610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41d5e64422f44957a82f71fa2b6d254b622440d98c4eee652e5727fbd793d29. 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/FR9IX2302010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef383319e22d150119423ee2539a1a6aa511466d534f9cecce40f843a69436c. 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/FR9IX2301960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4816f606736bf2ed80f9d278e2ea11e48ac66fbf8119c4419c0ae0cd986812a1. 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/FR7O52300490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333003c749ec71f1563c5a6a72ad0551f0378d47503eb1efbcd837ec0165bf09. 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/FR7O52300560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd008fccd697df36ed800b683f53a380a17efac483a8528889b06424463c88c1. 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/FR7O52300540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67085d79bec1d741561a784fdef9da9bed4f824fb53a7e2d59df07923426f08. 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/FR7O52300600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551edaf52d8db2b745ff1dca5f0d4ee33d20406503f38fca5506802c08dd6ed8. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/FR7O52300530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94e5119b6cb5eef0e072f110d5df6a603127c279bd9c674abe9ffe6d511473d. 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/FR7O52300580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf577586300cb636a8da562d34eeaa45376874f9a3a4d7f73637a3eb4cfedcaa4. 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/FR7O52300550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32681c90ec430630b7371641ece0562e6cf37541063ca0dd2223be86bcdba61. 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/FR7O52300520.