1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x7dcc42926f89cfe3f3b6f8cad04321a29a90bef4141df4b9603d957944ad9cff. 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/8d5b5f97-76f6-4043-ae70-f67852f18691.json and https://artists.proofprofile.net/proofs/artist/8d5b5f97-76f6-4043-ae70-f67852f18691.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 → block OTSBitcoinBlock must exist at that height 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 0xd66e005df781320694249d036723c6c23f5aba685e65aa28e92ffa594dae75ff. 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/IDUM71900093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25bb63b7844de0578719cdd6ac68b98a8687d0bf60def40c05488300d71333c4. 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/IDUM71900026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ba3263503c72feee408072bed842d68f651bba25964448634be9cf02d94179. 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/IDUM71900095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695c30b94f249e8bd72103bab8e921a2641d92ace57d613c449d8982fdec0884. 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/IDUM71900094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267ce51a021dd46cfe8e0777a8cc13e3c30189d1520cb8420d313ef583a121ed. 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/IDUM71600117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88abe2622e7a3c16a96aac6792a2f37869b872c8fb9d7104fb564e2f168ac67f. 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/IDUM71600050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc04d01cc7dac78994a8854596bdd304267e24a04696f6cf50cd0ea50a651518. 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/IDUM71800081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7cfe8bc89c5afe0fd9a2560162f206c6ca1805d8a41635b8f4f378df4f3f816. 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/IDUM71900097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61f121c02b45aca2738a0c2f6cdd4cc1acfd0c9927022c2e3143bfefeb9a4e0. 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/IDA832501692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc132dca1f05aa7b86903b0cb5ebc86ad58928f38f334623ccb2fa8ed44df770e. 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/IDA832501394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8654b32f08164ce8b3588cd845ff1cfa5366294efcc2eb9b7858cdfd1cc36e4. 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/IDA832500487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9631df720461ea71bf0c0c11aa3bf41752c76aae152309d208d20a7e88045463. 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/IDA832500070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba50244c1459f732a180b88b6818bef0357402e48f546a5bc2543377a2501d71. 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/IDA832405480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5003cc657b1abd8023b7ead57a1ce8f679ef3ac16431f766ca4fd909270dc0. 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/IDA832405067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3791085feafb16a289439b4f2271b1e91560999714bb8ba2daf7c340014299. 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/IDA832404654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db27a85c91a6e4650bb37030ca854a2077fa909897f3c6ae0d51c5aa544a4f2. 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/IDA832403815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67bef9a325df402665691459264781cc90f530d08005a4385a1615d46d46ee0. 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/IDA832402369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0195fb0eebcbcec32aa3bff95ba183bfb775e4cf80966f0dcf645ac6886cc153. 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/IDA832401072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21087e16c7705338e9e2a8ec7f25857c82a2fd1ec88da8c483d576dcfaf2efe4. 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/IDA832400356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723c063958eadf09813a8d9d2c8c22e58d75bb1f1de4385bdf50e6031b4f93e5. 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/IDA182400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155039df0773f9c13c93f986669ccf03ae39f0903bde6fd276cc69e6a9168d30. 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/IDA832400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7378d22ed8d90b5698a9e4cb20bd1f024c7a2fcda114933fe063ed6a6deb1e6b. 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/IDA182334671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e3eb4cfb187602c6ea66f674b264b1e05b30d012e6fec9b34f348318f5f154. 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/IDA832303206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab43941083d82a5c074b500ee9c9652176cc44b1ece5883d6905c80b2008612. 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/IDA182335498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b674b5d02bcf92e7323b9e1b475924dd619adce865303f48d946a4a77a3b6bc. 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/IDA832302702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a49fb1cc79e2a389a261660c1786c9e303f9727243105c9206385d839fcd161. 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/IDA182334572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93aa9ad016545dd9d8666bac06b49af108fc297fc1b1d6ab4de14141a463ab26. 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/IDA182335499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a2025d9fb69cbbfc969fd9253586d8eb31e781a40db836be48ccf6700c477c. 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/IDA182334673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6c89f21253e309af6bc7abdeb04913bdd6b0bc4bfe8fd096cba4698d53bff0. 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/IDA182334669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c261e47c60183c2280229746789eeffbd925de98f9e204b3db67aea2ac0a6dc. 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/IDA182334670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb933b7ce5267f7eeadd68c5d26615b014704e6fdbec1f86338a6a82f36a44d0. 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/IDA182334672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9abd99d3756a67b81971345b644d768664f20aa51687d9515095d65f2129a7b. 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/IDA832302022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007b3032d1a79f1ddb12f06538fd1d25b1e0e6cf1faae5f822572bbcf68e1e9c. 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/IDA832301953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a0ada807e68f3140d9d1d753ec186e11951f17fa0a55077b78ff83bbbe81b5. 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/IDA832207569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6e3e4a00c178b4002266d3a29f2890f46cbdff4bc4a7dcaacd286cd8152d83. 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/IDA832207535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1203b77a769436cb7c75b50ee827a16d20a88b1115033b127efd21d256f7e3. 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/IDA832301723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e6a44ca2eb13b938fbbbdb0fdc0f3a391039fb37e5cec02ec9f564af1c8221. 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/IDA832207351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a080d5737f0c8d1a4dfdd67813b84747502823d1f2f2f90f022e53b76d4da6. 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/IDB762300194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1cf8cbff07a46922735498363b5a5f0bf57d7aea0fa3bdf340ad293a7913784. 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/IDB762300193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938e634e5582d27ea4449a2ed9d4ebb6e2a376d459a347122ff7574bd299f0ed. 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/IDC302111600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecbf782e1161f0006285da7c59a8311f4efef7dec9d10c7131508d46435ac4b5. 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/IDA182234446.