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 0x1720afaa407dad4803c7d8530822e0fdddeacc3622622f4bc856fd9fbd3bf5a0. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b36a77f0-859f-4391-bb43-fb909866bfb7.json and https://artists.proofprofile.net/proofs/artist/b36a77f0-859f-4391-bb43-fb909866bfb7.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 0x639fa543aabc9cfd37e0b1d5ae7cd202593316bacbabb01c2316b2fc84da5a34. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NOEPG2413040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeda13840fbdbe834966c4f57ddde395396363c19ad38e79656109090f1718c9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NOEPG2413100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65408f65ae9eecb3ebb908414775fa33f0bc5a788ee0d3a1a92b8fc7a001a5fa. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/NOEPG2304010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3333bafd4b710f584a1cce7af509418a47ac35096d15cab57fc5f3fd8ffef9f. 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/NOEPG2221010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c7a698ce2baeaf8c3dd467592552be7777500040f2f5bd7ef032010a11a769. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NOEPG2304020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef651cb84db70df06229b3b1f7ad7aa5ecccda4363c86aaeb45b8acbc3e3ce7. 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/NOEPG2215010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae3ba5305ef69714a1a47e98986afb74748660945d93aa773ea4d46017e12b5. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/NOEPG2304030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff14398fa3b5d339a953a04c45d9577d5c39747c3d40bccc00903903b8a0154. 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/NOEPG2304050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054a7bbf724bc2e101e4410de16d6edec29c73381d2ebb3fc2ee9158955f8828. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NOEPG2304080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d965bc24dd536288bf2f780dd15e4b26e1fc6fe8bd235d6a610a2c92d74bf8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NOEPG2017010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec799504e1975ab6e82567a8bd9aaab3d57acdbab10868282ba1838a73df9627. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NOEPG2009010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4211c7f72dd99f12b118d519be3b7f81e829298fdd0e87db2757b189abcc749. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NOEPG2003010.
Unexpected Turmoil (sophieincolors remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff14398fa3b5d339a953a04c45d9577d5c39747c3d40bccc00903903b8a0154. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NOEPG2304050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd229212a9f025314b9b4ee7175cb87588c7c156e759a92939545642f402990e7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/UKQY82200041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54547f5e8158b7682cdae534a71a90cee74ebd56667f8cae5677d214354bb509. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NO2WF2304042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11471ab813701d4bcc7e27317f7cf331f7333af53057bbaea9a91f3aa876c75. 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/UKQY82200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93713416ea2c4f181c60c46d9805c5a864439cefe2a9fbbddeb605791a2a057c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/UKQY82200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c86ff516b01600366603f9b82fb128b93a0a308325ade445f68bd644325bcc5. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/UKQY82200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c9f080fac8cc117f2a33df55e4898bbf54d2895f7cc43b19b2ae0adf491c4b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UKQY82200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7cc865741e7a84218c3e9e272e166f1eeccc9bd12022e009feb568568cafc9. 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/UKQY82200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd229212a9f025314b9b4ee7175cb87588c7c156e759a92939545642f402990e7. 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/UKQY82200041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ba4e402e4e3609eb6117a19b2f78f9e739e1dda88bb8734dbea3ab34911185. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/UKQY82200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d05de5b2d0e9b507b47d70044d7640ebba6c1e3420e50aeabbf4d9ffb8ad1e4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UKQY82200019.
Kitsuné Musique Mixed by VONDA7 (DJ Mix)