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 0x4b7de2e257cef4c1f7a107de6e33b7448b9b5ce2b7b1b3c82749128af374bd5a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1565e16c-95e5-48ee-aa93-ed83fb93c37c.json and https://artists.proofprofile.net/proofs/artist/1565e16c-95e5-48ee-aa93-ed83fb93c37c.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 0x7fce3094eff80a22c60d0dd5fc2252f30d07ffa49ac2aa658ddae715769a7593. 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/QM6MZ2286756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa052067c0eaf3096e5a4de2d009a0abea30ea10e5c5d957ef9cc803dc6ab6cc5. 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/QM6P42256521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497afae00df46e4ec4306a2ab01d15bccf7bc8361a9119a31e3f08f5100a0675. 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/QM4TX2267435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21484814f0e3b4dff39d1e80c7ad2d47c58e1a3d078cf4d0d77c0a8bf287b91. 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/QM4TW2282923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22c8e6b18bc9f9959346ed6a4962506f283f44ce79a7c12a7a914f9479ce10f. 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/DER651718208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9cca6d226e2b4812243a975ca83bf343dc89e4bd4aa8e192c5414318488d8bb. 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/DER651718210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b861e791cae53689ffa500cc33624b80711f69928a4c9fff51eb79f5d5a9d23. 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/DEMM51500170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7322560ebc0044f7a2c83b0283ea86576371156ae13192939169ada278aabc2d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEMM51500171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ab0ece3a6f40b89d87fba08f0beca974b978da140c58b9bea8adf8e92d9f2c. 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/DEMM51500173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36cb060c6427297a7d6f49d70cff7b0d7753ab252c14751e2ec4b742f42d911. 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/DEMM51500175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46d5ff00bd80c168fdab52b06fcc6600ad491c003ecb838f92e4a883908158d. 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/DEMM51500177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee53c89b8a7a1daad033f843e9a63342295c0bfd2b619ca80cab86944d8942c. 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/DEMM51500178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8407a2f0f323a506490b159826bccfcefd409d3d099b80243d6a3244773841c7. 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/DEMM51500179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3229693510fbfc1ab0f0b1ad80acbe7db40657d4289695122045a8d68e69c9f5. 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/DEMM51100120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf9194acd8ed51d7a5d666ace0eb8cd0fe9e1aa8d167099897bb757d5c186fa. 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/DEMM51100122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184abcf248e046d9bf253930339fdea2d799255786d05f3b3ba6a9575a9486f5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEMM51100125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9854949e81eb4f95903a446d8e5f950ecab11efefa85e5adc02d2da1c5d47c08. 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/DEMM51100127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5741e3131c12036ce412f43038d4eebc029c708b92a72117952221d2cefbb78. 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/DEMM51100070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54cc3daa0b05b77207edc6619bafef2ce76c696cdccc04f17da56234087b873. 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/DEMM51100072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fcf54a35d6e7829fea793155e78d970755fac2890d0ab6a4e7ae5061ed1b32a. 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/DEMM51100074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69b4aa1c24969b31649b3c648daf74ec318a397a265bd81ab8d220dd095adfe. 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/DEMM51100078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497afae00df46e4ec4306a2ab01d15bccf7bc8361a9119a31e3f08f5100a0675. 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/QM4TX2267435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21484814f0e3b4dff39d1e80c7ad2d47c58e1a3d078cf4d0d77c0a8bf287b91. 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/QM4TW2282923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d1c99afcbef4c1fff49bce45900cbb0ac1235f0956e3d27379e9085a246e5f. 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/DEKR72000055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc94d3d3f2f5ffca4e7add8cbc941a9979fff191b151f962a2a1cad4ba7adc4. 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/DEMM51100119.