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 0x2f6e6c33565d65b774f7e9a661bccb2efeb73a78671350c2aab63f74b966c742. 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/ee29ff34-a894-44d8-98c3-091d64a71297.json and https://artists.proofprofile.net/proofs/artist/ee29ff34-a894-44d8-98c3-091d64a71297.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 0xcd2357cf661fb59cae9a7b20ca5627df446493a3b302b8a776529eafce90fef1. 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/QZHNB2114885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e4ba1a699fcf89f758bacbeb4805612f1a15bab702a6fb9ab7b1f481c5a256. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZK6Q2185178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19dd3a82a95fbbadff017cd4598a07e8b0ab886fbfcaf193169e8a2a037a2f69. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:41:32Z), 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/QZMER2139349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a7f0eb6cbda4d2ea22091995a66f12887afa1c3a8df79d5bf6c0fd5ebd14cb. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZNWQ2166156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262ae60800abfc1e95c2e40efcf53dbc3279b5ac8671137cd63380c09ccf4955. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/QZNWT2115434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda40e5adcc17569f9b6a79040204d6e3fcfd926e06df9dbf11e4609c0d375d01. 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/QZNWT2115435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f156517bc477ee92f3823ec238fe6608e9f30ec27758cf4b94e2e198ebd96e1. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/QZNWT2115437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924b4c2f5e36bf9e43c751cbdbe700432b62a045252e7441e01ba22ccebe6517. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZNWT2115438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c4c06b905f9838fdf0fa8c19dd173ba4426ab0473f77cf2e53f22b42e8d6d0. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZNWY2188823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea387c2b7bfee9875e889b9d68e4ae26d3f4c11e5e2284ad7e7689b6cf0412a6. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZTAS2196981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45abf3d1075e8958a1ad3490bbbc281e62fc5d6766d3fd89d082d1131a2f13ba. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZTAS2196982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71022a6542ba9012d667dd7791a1b9fef406c79c8ec45c06162dcafe9619ab95. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZTAS2196984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6030c723472fe59695547358b58b0cfcef0ab98b2ebe0789547ad190f86554. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:38:21Z), 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/QZTAS2196985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea83fd841ffb18e475f667eb1eb9ba0d310203efeca765e1dea94340e23ca20. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZFZ42266965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2028b7919411efb9993165805c7695fa8a3d38fea4f77fdd8604cd04bd5d3a6. 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/QZDA82220382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1ad59de3454d11eed787bf40eb93a1f5e6111d7d73819b0862647e5c4b51b5. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:32:23Z), 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/QZDA82220383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb015ee0124edee84520a456fbc72640255f64e60883b82329ae1b4be5a4c7da3. 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/QZDA82220385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c78d2f15a0d2b6e3dc4604c71a47ec56922a34019cb8963480c9de59a2092a. 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/QZDA82220388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ff1a5b1f09bac6012aa3d2bb1e73b1aa7542f16bb43c93456f6efa56b44075. 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/QZDA82220389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae2901904497757f34a6020bca7671f1ebcd04b5f212b8aa0999a7bc5ddac96. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZHN42264219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1378294b5fb2af5c64adc3d85094bc5df84a14021f15ee09b5aa894e41a371b0. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:03:36Z), 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/QZHN92249866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170c26c077444d1a77f10dfa2bceaf81c8bf8d52691f4d28654f25bdcba10b8a. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZTB42325268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6204f3a0313c668ff61d9f972be7968191348583970b7ef89bc84aca8f9cb673. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/QZES92434807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2255815732417183781553e6916a9a7aca7fcea3616ac6f4702d2493c77cb5. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZES92434808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c78525c5beb6e455ddd39d8137405e6ad113a97394c846e905bcb1f3f9c4946. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QZTBC2443929.