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 0x792c77f2871e3d24492e2ae4def75673cee9031d177888f8b0c127289b292872. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/85122078-29c2-41db-8a0c-eb4a9d665a21.json and https://artists.proofprofile.net/proofs/artist/85122078-29c2-41db-8a0c-eb4a9d665a21.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 0x302433a9f439dba7e1ad01dfb0fde8295a31b7d8442b212871a2f70296e725cb. 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/DKDH70900302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11cf2d3f93361329ea76ea792ef4a90434c32668aa2cca0e4a438043df27beb. 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/DKDH70900309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0a55c7890b2a9310f7b037a70040cd91b08a4810e3bdb9c95c08b793378dea. 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/DKDH70900310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50283338257bfcb7a64210a751e325aceb5603e82302e91c559b411e3b82148. 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/DKFD53336002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974a04a1215c7f53da0c64ca46c5f3befa64035cffe3e4c5dfd7761e16a805e0. 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/DKFD53336003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af6d1307768383af61c769f873725dcf4df7673372537ea75adcefe2ffd4db5. 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/DKBR20803002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957e0b18d907c97fc474fe81c39570a53af3d3e9ee1c3db60e28ddb17a6d3e54. 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/DKBR20803004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1cb80ac185f49e0f8c6b6bf5fbcf74355cefa9a7715d4962938f95115f8449. 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/DKBR20803005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5e8cdf4ce72e62f1860fa47ca36af6508fe4e3cf8887194addf68322bbfed9. 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/DKBR20803006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40915906a70b9533d11a83f0bf9191632ca275c2d7b4a6d54f5868ff198d2db. 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/DKBR20803007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93e70f2d2d89a3c6223ebe37ad70252c17fa8ef62e1f89c69c40ac76d54b18a. 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/DKBR20803009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e66a41fe4aa3d99fc4a30d3c807aff021833df0b8b392ec653226d994cefbed. 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/DKBR20803011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6beb626d7a73e79d166e192c620386b7324ce7fe8d5bba1a33dda83bfb583bae. 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/DKBR20803013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5fb212343ed96025e91954a1aff66b9758e74c9cbde489bf2d6588c7832787. 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/DKBR20501001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4800a111666ee6e48cb86b62bca8d5ea2346af84a3c8545e36008ec5076516fc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DKBR20501002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42390e1f4992ec30d4efb0a2408b029dfd17625b5051d8f9064235388be2f6c. 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/DKBR20501003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03575790b136fd10fa2d78cf575cdb6f29c446a92caf6e9bd79ecc99508c1796. 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/DKBR20602301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22915bcf1b22d233ef7e90c81bd1b4713fcc5111b9707e48d835d864de461297. 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/DKUM70900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444c206ae542994b8424e9e240bbafb1912f9bcce518223887345072b46b5315. 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/DKBR20301011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6418ee0f3e44609679ffcccafdc9e68c8a62dd4ba28cb0dd05f27d8e0b05025e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DKUM70900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61bb7de18ec53ac2e83811d4e3dca2ccc63084ca9c2559b8e05f061941a25e00. 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/DKBR20700303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5a28a28cd5788d6e0b0a6dd93d193679ff7a5e5f5dd451beda9a9ad94d9b5a. 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/DKUM70900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf22e14f44cbea041896cc45ad279f31541a668783850329a9e9582d7cea68b. 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/DKBR20600102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8457ca5a599f42c7e9d343b188f3d1480aa537a692b125454ca0832f071d85f8. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DKBR20701114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258390af66ab4db83483213b3c7fbc1208a0bfab69dc075d3d45b59f131fef26. 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/DKUM70900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4800a111666ee6e48cb86b62bca8d5ea2346af84a3c8545e36008ec5076516fc. 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/DKBR20501002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80bc341bff509437c53321cb27672b9c8b0363ae5423daa51fa132592d66dca1. 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/DKUM70900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82a372bd1f020fc8d35d19b30a686adaba2063ebf2e2c368eadd391090698db. 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/DKBR20700305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de6a60e1229234c14068608c8a22b7717e95bacc2a27ab2dcfd9dbee24d0fe8. 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/DKBR20500510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a329d7cab2b5582b2438ff8ad069a6b30e35f8f9edb5048e3b4b945ebde1fad. 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/DKUM70900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af6d1307768383af61c769f873725dcf4df7673372537ea75adcefe2ffd4db5. 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/DKBR20803002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0366f0666ca3c146671c328b206f55095f676e62822a812b7b24b3e83e8e6588. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/DKBR20500506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9954194873e2db7137148c90829feb91e27d6d6876ea9e2b3cab30ec7098ead6. 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/DKBR20701107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bb9edb2218f3fc3984834b44ba6921ca0c89c31643499bbcdfda1ceef4e8dd. 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/DK92A1402102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a2b71bf403263014ddf1c0a59a68aafc87b6c7d4a8146a64fe96ca98a54c7a. 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/DK92A1402103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f7c21973e3c57a76aaadf2b74d86b01980962c7fb23d1eddfec95edb06696d. 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/DK92A1402105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3323add243e1272767589890fc150297f06633a50095b46c94f7ee4839070334. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DK92A1402106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f0ff56265f77f4cc71bef90ff7328e2c17532c12f17f632e8ee9904c958cc0. 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/DK92A1402110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8526e31cafe0e0f4ecc6074f49f047d47d635b2a9df86cf1c96d6624a8da4d77. 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/DK92A1402115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b22cd07e577dba4857010344f7e031f2df13a7535ea36d31cd00680c54fb7a. 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/DK92A1402117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6bb31f4a4e4f2f21e76bfeb5c11789d1428c4db6d3dfffab3977cea5573e036. 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/QM6MZ1784446.