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 0xc29ea02dac9e3a104f6eae464697afe8548866ed24ecb0561deec7802a0d9306. 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/f20761aa-9797-4df7-86be-e1ce9d2a4364.json and https://artists.proofprofile.net/proofs/artist/f20761aa-9797-4df7-86be-e1ce9d2a4364.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 0xdd11f37368e81613fd23df2a5eeba59b7ebc40511feac62c7856c889ec4cf7ba. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GX89G2340372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c941cff0eead0a6c57f0bea343e25d64c93da2ee1ea50fb8e32d7a2c79046de. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/US3DF2424399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e69b410a56a3ae03354c6ec169dd9136cd1876c47ee81f7db466c4f9c0fce2d. 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/US3DF2431564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d38a42d91ecd95a2b82d173ed1d27973c382e29cf9fdc3eb0d04b08e2dcbf4e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBKQU2480747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd4f77bebafe17434d78c7bb275478039826763de544c5347be471c8b205c1e. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/NL3M12407266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a35c78f5dc43ae319bd7d6013fa7c1ee74690dd99778133d633044f72874de. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/NL3M12407268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb31db6106bae650348ac0e767d48d3f964a62665db039ffb82c4c1c05ea2b35. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NL3M12407328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3db674a3a1f27cdb068052607c6f684ca3cf36d1fda8c1a3320768cd6ef793. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CA5KR2515119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ebee1a811a46f656e95471a8cfd9d87f5efdd31ee880799c19c50d3ebc5736a. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/US3DF2534720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb14cdf8e1cae0c24bd3bc9c49b3aa33427a190cbd915178c11cac9315cd5102. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBKQU2552796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235be811ccea76be8b4b6c6d16740bed8b9de29ef2e591f999f69ae6f41a3bda. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QMBZ92598835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8594d76e90650f4ba8699db24206b4256492de08dff8b8a477a782df2038a4. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:20:38Z), 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/FXR952560682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25451137cd00098ec43d2d814a3d85bd4d0d5587199c8e26c196fba20b166fd. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:29:56Z), 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/CA5KR2546335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd0015f5385fb863861687fd77d2ea01cdf9ef00b7138d3c79bcc532300d928. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/CA5KR2546336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7a4ccd6c7b2e595fba52fe896609e7974cfbdef9fd48d802f3eee510247c31. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CA5KR2546337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e226f3964eeaec09df74d0886ecaefedb924d2f55bef844f067deb1f834a537. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/NL9KQ2590901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c0224e44cb580647d2a7118502b084d314562adcb4d1bf2596e956474230a2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRX872594732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7043931d2f1e460e2e54a6cd59de604ae2e9bd51e6633733086839327c370fe8. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DGA072514036.