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 0x16eed8a2d7d21fad3eba54a60cabbfee496ffc02604b53791011966c3480d2a9. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b34954e8-23ca-460e-b329-5b10fb5b13ea.json and https://artists.proofprofile.net/proofs/artist/b34954e8-23ca-460e-b329-5b10fb5b13ea.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 0x4f5bb0e25f6de99a687a8861a4e7da3e91f558880e597fc7af66a568e1630214. 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/QM42K2399318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382f9b5bb55bdf4b8a6a3826b9f4c06208bf5c546d705ad725c7ed11e1c0fc49. 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/QM42K2345857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a06a9f5f4d42b5d1f6de347c172a2294ee853480ce53bb306676753f027d1b. 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/QZMHN2358570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bef482cf7dd0a7b4d7a1636611c2cdae1faf8ca9dd531acac054a7f52a77422. 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/QM42K2339677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63e6f388a150de3a4cc6c6837980391a1b8c443fd040007e21671798740b1e7. 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/QZS642311835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333d3faf97a6b1b19d036ec7aa86c0a219fa6c29b82c32941f9837e6afb6d761. 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/QZS642377620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4bdf974fbb0fa15027ee9e642d811dc02d42e6756618f0ab9c41c5270efc71c. 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/QZMHP2350169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff92f629f9030dd305c17651e0e6588f3530f761e7b88e3a66a0b676c8a7fb4. 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/QZS652382694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce5f93c40576de0940de743b907d8f50b2ce00529618d4de0b27b673bbe1c2c. 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/QZMHN2345725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16370dc9f97eaeccb8269e01ec4178f4ab3bac75522cbfd812d86f9161050117. 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/QZMHK2352221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e891837ed00991b5fb3eaa8f4bce33105f6f4c98e68ed95784bb60ff5c7c10. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QM42K2390031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6614a8d4b4d3508c04cfd13138db7ef5e2453f7ae265687ce82510b4e78aedc2. 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/QZMHM2328496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacfa1e542610c54ce2aba1cd1172c0a2831c9e05342f2d624150c1dc6389b2b2. 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/QZMHL2387283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032734cf48ac3e81e818e1100bdc8f1584b7b4463b6590bb33eaf1714a8b0604. 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/QZMHN2306136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ea3371bb9792c7c4f0bd318d7f3c10b5bfa937ea293f6e1c6d3cf06fdefe17. 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/QZMHN2386543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7037844532ca3153605280c9fe309a522fb0f0f14485e1b9b841a0c37268694. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZK6J2418077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4e7dc0086711f125f3137fe2c884a82d55e2eca77518100df29864675a05e7. 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/QZNWT2227574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fdefff13215b90394c332a8d3093667887f58aaa2254adcbd144da8b48288d5. 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/QZHN72507043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x902d52539e22c802fe18ae2f933e08243462b38ea21979925849d3ec2631c811. 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/QZWFU2457102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d8129e3546845e086b9f4a639462fb7db1311ea3a7090b4ce30157ff9d5fab. 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/FRD9M2401460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4c93d1d7ac650c9492dcc25bd5cf7a9784d45c4137236012a33eac21622cd9. 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/QZTAW2399552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdadbb76a847ab6dc286221f7f9f384b57de0fed27a7e8dd2a813edb552a9b7cf. 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/QZDA42385713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda86fb49214fe7367522f01d16e383479ba431fcd6effdffad6844c56992d9eb. 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/QZTAZ2275426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e8a032fe6d7a25800d6898fc999f8ca85829fb999840b33e42c5b80df32113. 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/QZHNB2245098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20c199a1113e52d8e9d9054de6f42ac6447456023b6dd4a1b5c34f7f084ff68. 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/QZFYX2251280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40abb08ff9a75bd77f59bb9feb97235a632e14556d8f236c9ede756be611879. 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/QZFZ32146179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e9965e3f240b4ef34b7ab65fd323bb208c84cd258562138ed3eff281be4a40. 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/SE6HN2122055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ecad04d5a4d239800e59a5536209f2efa6149fb1ebd7fdfe8df29fd132e18c. 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/FRD9M2401730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525824307edb257200a5df0e84558889895695845853ab2fa6aabdaf201dde80. 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/FRD9M2401740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e3f355b0ad76d211beb7d8dccf7f9eadfff873965453546d3ed33ae86e3c4a. 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/FRD9M2401760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d8129e3546845e086b9f4a639462fb7db1311ea3a7090b4ce30157ff9d5fab. 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/FRD9M2401460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a6ccf3ca075dd807852aaebc4a9b7cb21e993c8dbf6f8d65179459e2003cca. 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/QZS662452612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41159f8e87afae10c25409049338dc9adc1eaac83a34d1414b497202b4ec02b4. 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/QZS672456035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80491ced04efdeb650e7b0211949f1fff580e9129f7b56cf0b3f7f2e103619dd. 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/QZS662458800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297199fe8c5eebee73c2b843b90701bdb849eed977c84768e9566a74cf1b0958. 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/QZS672442151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e566d2f2b8062ca5ef0f889171d0b0c44d6b5ed87fdeef7dc236e272b6a77e. 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/QZS632459381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff76c6a3f346a537b67c00c7a36d0bba87a5c8a9c2d420a5a378c7eb4f5bd3a8. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QM42K2409186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1920c4b6e8c0bba9b2e3d62c11d2c797d1df2cd09fe174be0be4decaae2b588e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZS642493382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7661fe949b8e3d8d72d6b7976127a9fe16dbef198895bcb3e3ac820b539acd8a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T00:55:20Z), 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/QZMHP2457122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67ecbae77f4f93c96c315d40f474631d0d11bef96aa1ddc28a1b6520b0c78d0. 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/QZMHK2456147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b64d64e9a2261e337e1c97a027f5027fc9c7080ba3d602ad595bea2aef617e. 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/SE5XG2262601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a41877fa9c2a9788e7b1c6f9df6e802b50b41abba4b2b45f01546d15ed25c5f. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/SE5XG2262602.