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 0x3aaf1d4466f761e738d6c76bc5b7a3c16f30b9974748fc7901a6be9779e9eec7. 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/8c7f1dcf-a550-4910-88f7-167b51699622.json and https://artists.proofprofile.net/proofs/artist/8c7f1dcf-a550-4910-88f7-167b51699622.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 0xfe332af50960ff6948ef5589713d31faf91e35b1c311a409ea091ee759b76729. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:55:27Z), 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/UYL562000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61313307e7243b7cc3d99205bacec6e1878856dd6ad57e0f2a4751e24aea0964. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/UYL562000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d84dd6bad2d5981802d1895f1f7afa1b9aa5c6a5f764bed588057e773a4fedf. 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/UYL562000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c79bf2b7c11b0a8de52df174d02cbe72deaa03c26e973756328b37f3cbe4073. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/GBMJG2221533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31dcc076ad47c629fe1e879d567e7b7292388b551ce06704d8c48b281631b3f6. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GBMJG2221535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bded462d3dfe060bdfa23d6b7a27f37324398d5c7137cc469b9e2ff6c99ee90. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GBMJG2221536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1fe6039c022971609a51b26983ce116dd8440e269804fb1892e20560a5fefd. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GBMJG2221537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c3df3d1aba40107905c9b5d3be2f8939e03528e03813d004b199e258847df0. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:58:42Z), 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/GBMJG2221538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b579813b43b7ad9267f86c60f726d7c0a50ad0f626c8acb7d7821d16275c0c. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/GBMJG2221539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b174aefbd7a5e07185c48b688d30b4e2bf8574f8a01f14832e6e49487741ece. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/GBMJG2221540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05981900a0696a6ffa3a7510beb056f0a2f1ef4dca3f82835b31f1e7547206a. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBMJG2221541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14394e172d2a6891917f6d2975c108b6e1c0a6a9d66dfc6e8595f01f5728b93c. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/GBMJG2221542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae45ac3ddd29c0f057d23d23954e9730e1b9ea96b7c764a94fdc4cd056d8c2a. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/GBMJG2221543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271b575b56857366639d0ff85635ba9d7e525e0744bb7adafca9d655bc27c0be. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GBMJG2221544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234d5bfae2c54c06fb2099d6423ea968129dddeba62e74f0d76c45062391b753. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T06:54:57Z), 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/GBMJG2221545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1945f7caada60b7f33f514a61ee6b658b0b8cc10a03099b634a5860a946cee16. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:42:17Z), 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/UYL562400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa568f6e59ee48aa74fba29e3fc5584dd6e944e7d0487506c7f6504d9ddcd0df7. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/UYL562500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e577585b5957c834a611faf032c676f112406fb51fa931445e1abf677c33b4. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/UYL562500004.