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 0xff855033c12c9b49f41a9a5c2a1adc3bd7851e22d2ddc97edd03dcd62dd18be1. 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/24ae131b-3d84-4813-864b-29f2f30fe158.json and https://artists.proofprofile.net/proofs/artist/24ae131b-3d84-4813-864b-29f2f30fe158.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 0x4cbbd8b8fd4da2bf70f19724f7f816746cad31dfa14b6234b1b5207d6075f209. 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/QMFMG2322813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd5fc9bc4ac1bc0066574f89955fb6ccdac2ff151c848e3c80665d79b392c4c. 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/QMFMG2323127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6374c91a6048c0f2aad2ccfb515b7a4590338888ac859d9d646bf3d9ad13e8. 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/TCADC1734158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d32cf8bbc22251da5039b2b5254d7e2d08f6785eb9ab1b9196d50e0c58f500. 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/UYB282382080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4715385a1212c036351a1eafeabe13d89436bc80303f095d4c9a75ddc6865d5f. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZNJZ2359961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358824609c57a97fae5a422b9988f0a5650373ddbd814256006c9162833983ea. 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/QZNJW2381540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2528e98ae00de142f2d3b70479d1b0d3363e376ba01613d5c1d173d28142c3bd. 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/QZNJV2382861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75faea64302fa5ed3ea33862432164feae5b4b224c084a20b6cc386897f718ba. 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/QZW9L2234657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f5cc5533cd4531d9a1af957725dcc34ea6a37c7a192034d5db588300a24f4f. 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/QZW9L2234658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a524377687b78dc07d564e0792dae943cf303cb8f12af9ba8d459d791b06ec. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZW9L2234659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3566d9969506c61874ca89e102c5cca9994938414a657ee5c0545ee3adbe262. 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/QZW9L2234660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b0aeb62df6ef756df6080381bdf610190c372b6cd2dc797202603c5c583c30. 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/QZW9L2234661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075fbe7af66877312d03897c319693c80d2aeaf1d93bff3be0561d3080d49c3f. 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/QZW9L2234662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb322e794048a2ceecb8a2ccc11bcff4b646f98293f8e3b6adf43bac01f4af6c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNJZ2168352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0190f9f8c7c29bf969e1bb182e5c1bb8a37a95d4e08637f8ac4e5beb66651130. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZW9L2234663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356dd2b5bf8fcabe9a4fc348f1c6307fb7fe9787b4acd13af82e43065fa63d45. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/QZW9L2234656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d741f0c8a4fc49d775e46e69410e3ba82c8226a846766c5f52131b8cf5a279. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZW9L2234664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39590f6bc166f0db48341675698b5e31e53619e570151fbdbe86d348ae445de7. 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/QZNJY2326501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c6bcd136da5f739ad8136c015732776316a3617ced38232e27c4d0bdc0e6a1. 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/QZNJX2304208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb322e794048a2ceecb8a2ccc11bcff4b646f98293f8e3b6adf43bac01f4af6c. 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/QZNJZ2168352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800a963782944260035cb532a5bce41a7eba83e0a5e8825cec9a2ef5030d487f. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ARH1C2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62cc6590ef58466eef7a6690bb4460869d711b27f77839bf93d45cd721d1ff0. 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/GX3Q92159459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f9581ccf92ac98c6f3bb5b3aac2640d6d05456839f5a0d7ab0eafd65f4f13e. 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/TCAEJ1988501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb704942cc22406a54b12d61f25146c537be2d0b9727527fefc1ef369a27eaa. 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/TCADP1897181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1832ffccd57744a48e16c1be65b1f72790aa087a6c2e4bfb08f3250674a8813. 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/TCADK1717749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee62bef96df19e0c6520a9e95fd2c176a5c9212986a7166088126b11d7936f88. 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/TCADN1873991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b284ebbfaf3af6155835027e8553bf4237e83927e469abc92ffd21a9230969f. 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/TCADE1788897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2c9ce0bb984f341afb64748c4d693e73e1cfa14140afb6ea52f4c1710a8173. 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/QZNJY2326783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b11f1a3cde287cac2a2b5b3d938bc8430715c28287a3b2f9c09d54008216ec5. 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/QZWDW2516824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204798f054126d496ffd06c4e806d2cfa1a29e4bedc3ab93215032e17157ff3b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHN92543706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f6b285d9611d67a7e347d8e7f69274a6e0da233998790b2a12b764c1f6e4b7. 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/QZHN92543707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9007c61a81056ccfa47b05b5fc6958aceddf5540d2232605921fb784f7027542. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZHN92543712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9363cd2e72c4a496aa8a83e4c93345a13c8a29c375894ceb5cbe82bc091005. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHN92543714.