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 0x7902d29228c77878b43df87a5040850608b0e9fd816709107833f27f2c0ae590. 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/aae41be3-6a16-4fa8-805b-e64c49656f09.json and https://artists.proofprofile.net/proofs/artist/aae41be3-6a16-4fa8-805b-e64c49656f09.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 0xbf74c7099401f9299bba1a1b5edc96570d784258fb65b9c9a61005ee6d145580. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:10:17Z), 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/QZK6J2555797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6faf8088f4b755e694078d5e8ef1003d088e960f9961980cafa77126338808. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZK6F2504572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb569b97630faec23169d318de3ea93805360eed9088399187712592ed5fffd28. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZK6F2504573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9dc50a9052085c6806dfd28a1d9e5826036814901f1194dfdd23ce2f6b8f1f3. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:43:58Z), 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/QZK6F2504574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d5be7cecf9ec87cbbfc90243f874f6258e12fc9953d4bb6ef61a8c3f67fe6d. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:50:21Z), 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/QZK6F2504575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8946a793b7c0ad2089897282b52a03a8c91cbba7b90421fa052f2d308963f9eb. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:32:27Z), 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/QZK6F2504576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1622e440318d9f5c61adc88b35226804ec1ca2980a4e6c37e5225d3ec81a4b5f. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:45:51Z), 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/QZK6F2504577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbcb01cbc4cf6de08aa5d70c5c60d4d4d42b0984ea7b742392eb065f4ace1d50. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:05:24Z), 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/QZK6F2504578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426d22e6275f2afb6aa4cefd06061bd42196f5e871ddb453f83917e111d97c16. 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/QZK6F2504579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe572a45fc89e8862b3672fa26227bb282fd1bd68c7a8da4b1e4b9b95d34acb6b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZK6F2504580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e4421ec415f8cb0861454c71866944d2a3dd6257380de6d4b237af9a39e144. 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/QZK6F2504581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922ca199202d13f3d7b580c9bc62e4922bdfcd4bbf77039f6eb9d13503f719ce. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZMEM2501703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b89bf69ef0004e27efa2130897caeeffcbebe3d2eb9690958a4c31e05089200. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZMEM2501704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c477670e19c124b20e368e2c4255cda8a518028484c11e51dee12a9626db87. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:36:43Z), 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/QZMEM2501705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0073a8410baf930396b1fba0f21a39cb41ed31a8c121c1b7f054d055e2078b. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZMEM2501706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379acedb47a06b59565015590cf39db76769dd8ff2fa75ab3509865bf599ba08. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZMEM2501707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef5ea924db65444f6dbae305ad4348da60f1c857f32dc9f77d0aa61d2d4d02e. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZMEM2501708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc2ac13f3cbcd38a95c1ee8700253392a852eb9fcb8239a73bc68b568349718. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:58:08Z), 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/QZMEM2501709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7d97c7a235ece0b810d0ec604877c86eb3a275f2d9d861acef03e1a9908b35. 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/QZMEM2501710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708544a74b036886d4deb6980d9aa5017149b7cecf9c6b9c86d747e2659c9012. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZMEM2501711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916c3ad8456073d6b18b8687a887f9e50bcb8489cc33505323a397b7bb2a417f. 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/QZMEN2555124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9e656be8cad6558a32206915af88267a43e82d27951a8950dadb6a7d163aa9. 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/QZMEN2555125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a7148ec1b6c5d21c6e6f397939e475e031569f0448ed16636f3468824068f0. 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/QZMEN2555126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0274acf03d4789f6512bea584c187bda2b41497b2783945204b1bfd74356f14. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZMEN2555127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6ba2e7e09fdc41003152a9b522bee1e8700ac64903f08196442792bda00b70. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/QZMEN2555128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf321c79fd863401f515c2508f2149ea6f44e0bb4b25cf1c4de7f27dae2fb906b. 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/QZMEN2555129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73620e7d58956b132f3646dc35983adcafae052b6d914edcb9cecb25ac4bf390. 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/QZMEN2555130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f7982e8f8aa42d5ecd89f9f3a9d8a74d5bcf31ff5b99e86e475664c448f4dd. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZMEN2555131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b5d40078d15f1062bcd627f14736fb9c7826f69c37ef86e081fb1c15812cd5. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:26:30Z), 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/QZMEN2555132.