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 0x0dcb43e4f3c6fe415cbf3f8287b05cbfc7c726f25540584ade0bd698a3ad0b43. 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/b0d3853d-8f85-47bd-8f07-207e13188395.json and https://artists.proofprofile.net/proofs/artist/b0d3853d-8f85-47bd-8f07-207e13188395.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 0xb64e427604c75b7f04ac3ddca9b9c0a73d4ea7130c62d5f9217472be030975b8. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZAMM1742830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe911258c910268988bad939e4ab1557b0674693b5bbbd4000c59d0614d672480. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZAMM1742831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b255c6beca61e15302b0d839269dc1a34c3f284c73ac72aadeba84abb679d7. 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/QZAMM1742832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26eb28bd4a0637a4d0fcce4491a554e2e386270632c187cb8f783d9993cf8e91. 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/QZAMM1815427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc159b3b6ca3e434986d991a6d46da92cc8103db046c061cc65856edcc571e6. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZAMM1815549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013302dad140dbbe24a8690aab1aa417153688c822735bf60e4b418acb68da44. 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/QZAMM2165969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a26da3f0e37a27b7edd297998c6940fc11b92fcc9e1131c104f6b191f220377. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:30:32Z), 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/QZAMM2170113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993faf363e34decb648caf8a55c8df166a3ef3f62be4788436527c69ac27b808. 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/QZAMM2140191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86800a4dfd105bf7d707dd52edf1e65fe4726f8ca7ac0c98bb55c7d5d783fba8. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZAMM2139664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9538daa9966ca3f39c7d797c15957fce809c545fc1141452547b89dd337ab6. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZSR42176832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1f5b1f4646dfc8dc4e30118c87524604d9a7c16253ffbfdf7545eaf935f013. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:05:17Z), 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/QZSR42176834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3371092874ed7ef89e1dddec6a6728b0991ed30b55b52cdca440ac2eb353e9. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:48:03Z), 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/QZSR42176835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018e58e1a8f32f86afad81f21c1ffcc09f2a6e06cd6e7f7e1ee772a6e1bc7358. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZSR42176842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6cafe922305791aff36f0e907944f3e67d03d3c0bc19714cae13d40d3acb9a. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/QZAMM2244347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad48b472030a918c7d4b0b085a503a1d5d9de959845005b01393aae5e8855ef4. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/QZAMM2244350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8227168f10eb95795ce41a0bfa9d39175f221b9d8966d9cbf4cc17d527a0f9d5. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZAMM2244351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3e562fc26678b9219a2544a227f0a0c1ca6aece50a0c95b2c7b85ac14f33ca. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZAMM2263577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe600d81bff6f3c40dbc7feb3a871d5e2e8289bb091291f3f47aae2538e841dcd. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZAMM2270581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9e823c0cb591224c0efb7add7d00eda2db8f1a83decc82d7b3896418caf5a9. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZAMM2274144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4ed93e4de4da3b8daa303687cf4f749f0328b0ea6cf213dd183eb9955704f9. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/QZAMM2288873.