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 0xfa84cf55ecf963885c2358804bf6984be3868fcaabcd5d6d0e666bfa547b0ba5. 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/4b3a92c4-c58f-4aa4-a7de-99b1563a4556.json and https://artists.proofprofile.net/proofs/artist/4b3a92c4-c58f-4aa4-a7de-99b1563a4556.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 0xb0c89983be43775bea861b18ec13563efdc0aef8d041cb06278e060797a9da15. 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/SE49U1900801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703ae68326f35805be9f31913c670b2c9bc918cf07a4564a542baca457b120a0. 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/SE49U1900802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c9d709e08022c7929428089f48e75e69472711e691ad863460981f7a334828. 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/SE49U2115801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7042101a6f519c80978c9fcc301768f5190464f928f4d535024a7503efc10a73. 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/SE49U1900803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf48b56cebe10e57552223181591dc84417bf4c1d7143d632dc884ead260185. 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/SE49U1900805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339a878e0a2ce6b6975d20cefd4b61a60ba4bf91e87c32943773f02f7f270bca. 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/SE49U2108001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0076316cb7e33723af59308923028018804f1c51d8a8cf690dd69362e8bcfd. 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/SE49U1900804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa334d449eb9226554821b00038f47766632df5747ca63d83d3093a99abcfc0e7. 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/SE49U2110001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef00c665b5c3d2dd08bc1c6bc303396b97d632a34eef44d20eedb13e78ab0f96. 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/SE49U2004201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cbfde57d5b7dbb16d1cc6a6eaa8b71de6e7ec60dfe5b4099d1efc8d8e06d574. 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/SE49U2004701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e40bb7e03e79f88332da1b99677bff3435db1ae03b6d3d7d85d00fcc61e56a. 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/SE49U2114601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8e7049b745a8b77d3365d8c8a5fed0ffd765c156fa8336c5be3967414ca34b. 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/QZFZ62190018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b017ee59fea6ce3b3216558cb57545c756f04cec4697ff80077a21fdbc17046. 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/QZFZ62191517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f76bf6c3736c143077169f799e19fbe1b19d62af0f1cd25d9adef40a7905be. 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/QZFZ62170315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa334d449eb9226554821b00038f47766632df5747ca63d83d3093a99abcfc0e7. 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/SE49U2110001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59b9a704de900abf10cf8d49df85ddf0e992a20eebf2e3ee2291c0e4fbf4204. 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/QZFZ62170252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339a878e0a2ce6b6975d20cefd4b61a60ba4bf91e87c32943773f02f7f270bca. 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/SE49U2108001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0336f6e51f52fb52d72275c2300230b9e7ba11ffdcd6b1ea91dad603e5815cc. 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/QZNWQ2095395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841362cd272f7515f2bcd52ae4084e0bc416e7e6ec79d56f728134f31f960033. 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/QZMEM2077273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b0b8649d5a9e3df00ea66af3216f80e0db88ae2475662725dc1ce4021d6670. 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/SE49U2005701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf48b56cebe10e57552223181591dc84417bf4c1d7143d632dc884ead260185. 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/SE49U1900805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703ae68326f35805be9f31913c670b2c9bc918cf07a4564a542baca457b120a0. 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/SE49U1900802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c89983be43775bea861b18ec13563efdc0aef8d041cb06278e060797a9da15. 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/SE49U1900801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90270af1cc89dba0b5d02805cb945fc043820a037188c825449a419722004698. 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/SE49U1900806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c89983be43775bea861b18ec13563efdc0aef8d041cb06278e060797a9da15. 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/SE49U1900801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b408b4134103446aa7ee4cb64fb866698ebaf241a05714f5a6f6fd49a052eb. 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/AUMEV2506829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb19efab28ec6c99ffa0e8d2898be1cbe7277fdc71b2eb38c8963537e49693f. 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/AUMEV2579825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb653a9b70232f21241140ad88ddf99619d080a4790e3902fb112b10abe83de28. 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/SE49U2566201.