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 0x38adbaca8f5f1fb919f8ee232e95251cba73646493e6d86452cf545a1728ac83. 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/7b7530bd-4a30-43d1-978c-cdf9a1f5c526.json and https://artists.proofprofile.net/proofs/artist/7b7530bd-4a30-43d1-978c-cdf9a1f5c526.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 0xcd01a576ee28f1fc0a5a5abb4f189e501a2a08b06a7b93aaef53d42c627e665a. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/RUA1H1873524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760a2bf72cc61ce975ea4fb07b18d1c1e051d0f357f233e39d9ef9a8dfde4e1c. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/RUA1H1873531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c15854b7012e92097e26663ff698f51ee264555fc7f71f8e93703ea26a1361. 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/RUA1H1873568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76d0a3a2207c76ade91b1a5563d370e050db148fc379d1bfed66d02e46b71e9. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/RUA1H1873570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4da016c42a09acf5fd3c1e6c926f98c11e2cc693e0e568dcd9055f648125ef. 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/RUA1H1873583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e6a9bdcbfa389ac83c20fdb25c24d131f81c41de70b1b808f015bb469e8610. 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/RUA1H1873538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e38affa5f1e4ca80081cb2378cd56cde523c5ab83408f979dba3ff1b134bb7. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/RUA1H1873540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4147acf71b579769d896ac446f4a79cceeda92faefeef320b1aa11ef4b726beb. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/RUA1H1873484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c111071f080efb7f9203ef4186e17c6d200e8257a3bf2aa78a20e04972bd7af. 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/RUA1H1873485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62cf1eeae5772de1804d1160d9ea1fccc756a0bf06f1a1cffcfbfc9699ca73a. 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/RUA1H1873489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30bd4d62bf9c8a1850006eec19d6b3259065d2069e97d9505c6766620af897b4. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/RUA1H1873491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6613e4669e170e38829630a48d868a1a193b71849be51a87d0d7cb668f908a46. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:35:43Z), 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/RUA1H1873492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ece065a6eb35f08ec756b06ef26bb2ad5c1fc9234c029f60fea2d011930c266. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/RUA1H1873494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35311d94715446b1193ea40547c5814a5ad3321c08caddeeaa979f2eded8be9. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/RUA1H2342799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf589252f8579991b3f62842cd8eec04a36dca09d970d84896a3f0702a63c2e40. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/RUA1H2342810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9ff959798ac672142c98f9c253dd3a0da46bd06c50c4c5892c60966138bdf0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/RUA1H2342812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1aafbdf48e7554796a358d455e295eb413041f1b300576a436764e49f4cf87e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:45:01Z), 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/RUA1H2365796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97b4063c85c0a85a16640702e02e1b83181d5feb3e02fccb7a87c99bfc55f9a. 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/RUA1H2365803.