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 0x2fad6cb40838e9a34a1add9878b531dda8fad25c5acf5f30ce2dfc1f19417a94. 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/88b137e2-a3a2-434a-955b-a4377e8d7c61.json and https://artists.proofprofile.net/proofs/artist/88b137e2-a3a2-434a-955b-a4377e8d7c61.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 0x3cef0dd3051f87ecd2c45fc7fbed3cb0650290aaf99c882d0ab9a6f0f2324a55. 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/QZWDE2413614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0effa6b9264a045bf6d8af3e8df0ddb64f170c8998faea32daa7b4a1e35f0213. 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/GBRKQ2490692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6d3ab38c7dd94cf54cc113ec60d0182d44fec6162faac4bf932d737b3ad23a. 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/GBWUL2464951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaedee65510c108a77603455ed87f6c9fa4d346019e1a75af719ecf79465afe52. 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/QZZ8B2379713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09228a566742d315ebe82b8056ee638b15bc2f5231de9dbb79697d0db360786d. 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/QZZ8B2379717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0582069ffc5de77216e32a96fab8f6dfe377b38371eaf7e301bb2c70e50bba3. 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/QZZ8B2379721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9fbc1571db08988378a1ecd750b89feff2606f4d2561fb6d655d7ab5447454. 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/QZZ8B2379723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4efa649d1ad2f16e2b260921444d5288378630a6e2dd4135b8bc52b58d3fcfd0. 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/QZZ8B2379726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6110e07d35ea3f588bb007b9ac655402047b27f96a9013c6dafc284f9fa570. 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/QZZ8B2379732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb7dd7af4507f4fe9e3c3127126ce05388543af32c26c5521eabd54ad538813. 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/QZZ8B2379738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2140cfe8d4b5ea6297945cce9512e4bba4dda0c989ec2aceb5947a3f31efcd. 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/QZZ8B2379740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9bfa5aa91831550cff6d4919690cdfb8d2d1544f0c286c1236746760de560b. 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/BKEHX2400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3443564b4edbe0524b98ab61c749df41803aaf78ed7b6821f384d35b93f0b53a. 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/BC8BY2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeae1017c8eb7a2828a26273a55a0defe461017cfad5392545ba61949c739d45. 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/QZWV32444292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77dd993eeade5f869123e0ca7e539d2c442b83e89848c9a1ab4facdf1597354. 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/QZWV32435194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a32b3cdc0e605a51d70ad7205865ec0ef0f81a53ae96802d46559fd724aba21. 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/QZTV32446995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3187d91f00fa9dfb84aae7b9a5c75e8b9c42a6c107f5d9a82486fd580825bf85. 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/USLZJ2434280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052961feefb8092736728ed8ec86427d71738ee08860f97e6cc961b8853234a3. 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/QZWDD2353161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7b2ca6b85fe8a0f305ff141342ddcd8be520f464f4e2e831d2dadf798059fc. 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/QZWDD2320933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9ace6452843d6d8566eb36e5aba5d197b741d66e6b70f42234f024dda3cf69. 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/QZNJW2311154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe115a0073bf19014ed4a5206a5917f162d7fe176ffa05c917188fd2476991179. 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/QZWDE2438393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35aabe93474ace1cc0799eb2c105aa78a41722556a67596fa46893a46c3efe9c. 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/QZWDE2438396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c0e14c74682167626426cf3d3abeac04a7192c1fda753f4f8623404e4f1a61. 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/QZWDE2438404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f6634736c65f6de541ac329f35521581a9a11f08630494c51b0bde5816417c. 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/QZWDE2438408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0687fc3a2a3a4224a5f0c9e5e56c756ee0e129024dc0fc742a93dc54f8047c. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/QZWDE2438417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6040c788b3d69583dc18021ff9aaada6388a4771a46c85d53b6db56089a9bdf. 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/BXZYS2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe020918366a9e4cb89a0503bf129803579fa6bc3cf75e10d3cd9d852625c83c3. 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/QZWDE2412908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35aabe93474ace1cc0799eb2c105aa78a41722556a67596fa46893a46c3efe9c. 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/QZWDE2438396.