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 0xfe6be09b9704a0fd49c523f7860c470266980b11f1334106ae6782f8e127b2d9. 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/a0042dca-2a2b-42cf-8ce9-accb624d9b0d.json and https://artists.proofprofile.net/proofs/artist/a0042dca-2a2b-42cf-8ce9-accb624d9b0d.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 0xf3b2d3c191764711a66d21517a96f2c42e6c10a1104bc1ebc35f45c5b970f656. 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/QZDA42008226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a293ac376dacb945566441f76755b582f0933fd0996dc898df744a946d30e27. 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/QZNJV2010131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2d5a3b0cd6459eda4d6e3dc67f9b0758e66f749eefcd2018c4b681e1df3f78. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:22:01Z), 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/QZNWW2016996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d664052648087570539c54fa8389b049766ac7d5329792b07f25e784a1ed154. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:00:41Z), 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/NOAGW2100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93667e1bfd8f5efa641a66eeacc1d076c9f581944fe0bde412fe9555e5c24e8. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/NOAGW2100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7061f646e74e65aa932c28beed6807323fcf77cfa303394cf01e57feb3389b. 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/NOAGW2100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd30a1c41bd33441516dcb961c26088682e603cd94a8c8e5f481d56d64ae7053. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZK6M2110729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4bb2f586e92cb4ade27d63e585f3deffa64d9a20aa5859fb9fe6bbffdcea54. 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/QZMER2103301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e9703b84fb7ffc21a3d19ce68727d3a5c5ef7bf202fd55f21300e73a1bea8b. 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/QZFZ72214097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9433e46b1c2388f1466bbf9e51c5e0fd69c18a49aa677216bcddeda3aaf6e6c6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFZ32285756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27843102e27d9600525b33e363e2132443a914a791d797889e70733be843f0c0. 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/QZFZ72229332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e66ce648d7980b8128773100af15178f37949620d01990ae00f7348c945dcc. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZRP52287004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5de408d2c10c75c271195fc2898facf662246433e3a69426896bc60f04b6f95. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QZTB82292900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231d5a95a6931c3a4cafc6d42db4d3b970ba8627364f10c870028723676886d3. 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/QZHNC2357572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5387cb782e5c4d20593de64d63e6f34bcfa99b1267e41eedcac5970763cea0f8. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:50:18Z), 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/QZK6M2312367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d2db79efb89b2cdb0ce19f981fe557f5e41c9cbcd464daea0071a78541f5a2. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:26:23Z), 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/QZTB22372290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612fb830c8b2d2e6cd46b54741d77098079912e1d9721be0e52d5284ddc4d086. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/QZTB62373140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbfa69f5cce8803df10e7004b1c68487c302f28c87aaa562e255e04648ddfac7. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:29:40Z), 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/QZFYY2417141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc43325ab9486082b08e1dcfcb5aa3826393f1896972af29242a76d62eeb8b01. 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/QZNWV2421256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8598c2bc2a20270c2549566794b17abe40090357cc91720c8f867ac568672cde. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZTAW2435573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2485326d47a8e109e6244a164b439be87a6a055713276bbd8af90a2a2f99f9b. 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/QT2VB2424688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af74fcbedd3f76cffbb2c686cfda2d35fb4b33f9f01884b4b2f299b93f68f27. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:59:42Z), 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/QT3F62515374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a293ac376dacb945566441f76755b582f0933fd0996dc898df744a946d30e27. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNJV2010131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49949beb8d6e6fe8893b7b0633a0110e5ded016b19e0b1501620ab4379ec7782. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BEB682000172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b40b537147d32738776d65c4a6da443d91b72c5e0cd0a5cf6d8e5055a48d361. 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/QZFYY2069006.