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 0x1e93b3a4c0345d2dc90fac263287b58019acb2827d27792f45a0450d6170f76a. 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/6f9055f6-d455-423f-9eb1-dc1e1813d56c.json and https://artists.proofprofile.net/proofs/artist/6f9055f6-d455-423f-9eb1-dc1e1813d56c.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 0xddb38921cae6fa7b8ff86e004665a0ebc06d1e1c3fef4409897171664b1693e0. 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/QM6P42365880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99531fb999097311d23650dc55a5c7328a3ef3c050cbcd0ba485d68a218bf3bd. 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/QM6P42377783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4849d41e06ca01ae68894438660b632c3d16183076ee3ed208a2d2ea8278d5d0. 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/QM4TX2215717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393837f5514b1a8df9ae15739f5b563cc98ff0b7ac4fada524a55715e5569bee. 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/QZDA82207997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb70a37f1d44db0f33e9bdc3a8ee269b445b083c64ab89bd382d5a2c90ada76. 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/QM6MZ2228483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8f7efc7efb6e64f3f99b963fc6cc2e23c45567c39f4805d27d4ece5a8950aa. 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/QM6MZ2424600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9cf46c39e69580c3ff260cf0b52d4b6fbed3e20c7c9adf5b2db931d2efc852d. 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/QZDA82478059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e404edfd40cea8cbfb44e398bd303eea8540c0b4bb27240e7512bdfd302d1b5. 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/QZDA42415287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9dd033ba84752f1678347243294dff392004cc302c74332a2aebe0bdd16ba4. 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/QZFZ32401244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4906f5564aaa8edd362165d8cc396d64dab2661e42f6ef2c0e8126ffcc212faf. 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/QMFMF2311211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438ca99b763fa0ed50aa6279d22a0472acfd50b183b5a61e393b9590ee87fbe0. 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/QZPLS2323957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce30ee5c9b911830a3e59781fc7fab5b1b2e3079b44a30a08f925f4b489b198a. 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/QMDA62315978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5354dd2fa21ac78bb4458d4b0d5561f508e507fb5cc52ccaf2643458aa388927. 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/QM6N22333477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3881053acce9f7598d707af865b97385790c7856960e2c8bdcaea63e900ad2. 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/QM4TX2335241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b492188843a119f14f7d8146db30859d584a56068f6fe913163ade0ab54130. 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/QMFMF2215192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f34a3df44d96595a50f3f9035a412863a8083b7e79a8c9b5657e827402a4bf. 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/ES75E2206719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3a3c9a1f057b80240db890931a4c66bd08fbfd64d24f3336b5714b17b81fe7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/US23A1552850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56792d186d0dfc674730664f542b1e2757220b9e1192468d4fe9c9d982b8dbd6. 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/QMBZ92254487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5fa4cc902a442b7a98c8fac14a713f44afcf3725ae8aa50d6519b31417ecae5. 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/QZNWR2297369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61dbaff2078ed2229c220838d2153542860de3e1af76ceff794ce965c282b753. 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/QM6P42226862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202af1b7cc265ea0da64be4f00f2bc390e62957d585baf47c59db009830351df. 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/QM6N22251622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843e762c66ae6a7b2b2b6ec7b0273b5f9dfd8b12d7b616a61162cb719978ad72. 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/QZHN92209638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f240c5d01f456b92213e836fbf0bbab682575fbdeb8f821635cda633a276d9f. 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/QM4TW2294907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc0b69d25e24513039b322e85ae435e5e8a29d168473d2984da80b05095803c. 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/QMFMF2127889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c39fece601c6beed646cec939ab704d07afa264e35244097b74b55d99dd2533. 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/QMDA72170217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfa7c7040c2d2c0e18cbc0dac411bc3024411d683defd8bbf1e24be319238d6. 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/QMDA62108743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8153623dab420d5be3ba4523e95068daa6d3119484bff53fab974b30e04d4060. 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/QMFME2149014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9d0f9d07419451118ff0505789c4e9bfdb99bf12ac07bf9e6060acb26ee70e. 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/QZHZ42158623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eed60d3460b41f8bcefaa64ba153e6fdc012fa89e705ec2c7501ad4b20eab04. 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/QZHZ32157482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8feeb343bf8b22d11e4f7215e53affa2c563254405571c9a808c00ba13498fa. 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/QM7282085271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce649e59442b81c61569df41308578cc9f58820f40b0e7ff6cb81e35da10f486. 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/QZFZ22082862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c7e87771292f6ea60db83690769057d7ced667cc5f79a1d852d6570ae2b515. 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/QZK6N1976875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14da3b260afb9b4040d63b1ce8b99b60dad210ed95bcb023cf7382bf7e4788e5. 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/QZHNC1996431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0337dc827230b03408085f1dae7d33f423bfe93de3ce8561578a5697c5df9e48. 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/QM7282450845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13fafa0c8e4af7ffe1d0886be3c213f8fbdd7c3bda71f0450281b3d3567f45e. 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/QZNWU2020253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73f760ac5a34639c10a6ede8f0a35238a5fc4af949e0deb9dd1eedd799340ed. 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/QZK6G2072247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdca5efb7f4945ad058031023ddbaefe8380c7a84c032888ed4d1b37ef0b2fb2. 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/QZNWW2151590.