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 0xf7321708eae3ffdde0df18e9c6fa35417892142b2577874abea99497dee9aa43. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ad8f9416-3901-474f-80b5-1e26afc1201b.json and https://artists.proofprofile.net/proofs/artist/ad8f9416-3901-474f-80b5-1e26afc1201b.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 0x2fcb067f7b8d7bfcf004191ba316fa4399ceac30792db71e9d0295568eb4927d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/FR10S1619276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504751aec634f974c9b63f844f0d072a29e271f619dd46ae8913df945a0317e6. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FR10S1619281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d5819ab42670bd6a7bb6c0d56f8a2840a639b48d3e47353843b8134964aa97. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:30:10Z), 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/FR10S1619283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc21bc14c95bdea707b2a0f9d770e4ab09b3c147918c2d597672781ff20e33a8. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/FR10S1619287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe6e6897d74981ab35f0979ba5d75729c388605310ec5018d84cb513f521247. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR96X1859086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce2af9f65ad7f38f4addcf2d1a37d75b2615c46a41f34f29acec2e5cab9a5d2. 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/FR96X1859087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadfd677651ceb6d1aca73c0018f7d035bac2473bda7d9744fc86d96029d706d1. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:37:07Z), 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/FR96X1859090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd089dd9e3481dcf16725485b026cae2e5470430cd78ef1d6c26de5dbcfc5ba5b. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:39:00Z), 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/FR96X1859098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc9c61297a1282ececac5961f96c77deeab4eba39d6b6b111139e1c8068691d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/RUB731599392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf622444a66d2a384238053f4aa7e57ecdb6746ba84aa694f17803278a1cd3e3a. 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/DGA062025215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55466f0f3a8e3e03759b43b20b3c5b8878cee46351e41b9da75f4ea5eb531887. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:43:54Z), 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/DGA062025216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6733d16ae3437382ed6c5610e0551d56e05ab7dc8668afb89b56b181f0c5b06. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DGA062025217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145ef42c7c56383b25eb8f0b02adda945ee46dae8d424a1624edf95e02282ce5. 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/DGA062025219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f4a641635b6a4c2dc3c06ed1b72bb5866e4db8f7344f80463bfdec857a5bca. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DGA072160493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5bd8819e2d3b9cd711663886180c84e082ecb5dd7a4bcd1dd772d078e2ee74d. 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/RUB732017423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2710db6a4fb26bd29a367ea82b889ac0ef87b78d657aab90e3dc33b9b264e6. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T11:06:29Z), 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/RUB732018558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9426822ac65a4c56ca32d38b6d199a761ebbf507e65eedaeb855918749f29675. 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/RUB732017504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617989d3960266510815c70dac91d068bf4ca354eca965838f274c86eab01bac. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:41:59Z), 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/RUB732011655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756b0199b7c43187fc952f59d62ce33514ea7e926b657e275e9330bf63a274e6. 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/RUB732012922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb20ff3461b84ffc2997687befed4b760edae972426053193ecc5d0bf22a1ac. 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/RUB731599390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9146fe6c11fb6e97cb2a99cc36b30a5b1c85a8a32d1f42a6c3f98ce552672fa6. 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/RUB732023647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05d4a0885552239941c97eece9810293ea9cfab36ddf86fecba970bc4820966. 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/RUB732007150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb007514869deca2c7d4fa94007b7627dafa190b6af10d60ef2dc82f81d5b87a9. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:01:26Z), 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/RUB732019950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3889e6870debbffbd3d70de27e356f154f6fb9e3dbc674185ed791823f43565c. 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/RUB732011653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73479845f82a29603af3ab0c019a06b79202b5c6b5b505674966bd498580888d. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/RUB732023649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b144b322e7c310ef5efeca0c5699d0f3b66e1faa4c26f4f50274ae24ce4dc9. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DGA062354507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83cec0cf5663d6614aec637856ecba8e3c99e61b04d048963577e2c4e6d33f5. 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/RUB732050529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf7532d4ec19cd0e0b895718dcefbf5243327b0bb6c0081496d8d8a81fe2d81. 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/FR10S2405730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ded6c7df03d3dbcda28eaa1246841712f459f3be3e0245aad99354a78a9218b. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/RUB732052796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f1205628703bae41e69c82d42515951663698f628a07e73981e558ef60844f. 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/DGA052407392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3428b65ffb530e4d41681f374cd515e7fd4550d47c034f6f7fb3c687eaa32f. 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/RUB732039250.