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 0x2821b24167dc788c2b8ae49520630b506adc7024282ac875e2b272bb506beb75. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0614b1ba-75a1-4b3e-a8f7-31cf04c0c83e.json and https://artists.proofprofile.net/proofs/artist/0614b1ba-75a1-4b3e-a8f7-31cf04c0c83e.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 0xcbc4759709823c606a4ae66c270f2f4df540f7362062a0e98860dc74999c2364. 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/QZHN32266142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93dbfb93a8541d74c4ac6cc4fc0d3a209b0441fa69138fe23d413f0335213dfc. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZHN52266804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9782012cd62d509fd44bc76fe4b221f1e25db33e9d6276b68b976824b211064e. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:48:37Z), 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/QZHN82212135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0143cb59597066dd1e40517ecfbea53ee092b56480196dfd2ce701904c9db3. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZK6M2234737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9bc4530eb988e82e61361ab05de2d06b757314e485211b63c8aee141e0da22. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZMEQ2244445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67167bcd7d3c6dd4dfdaeca9eb22b8990dfcb4c6ab9416299edf305457e3de67. 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/QZNWY2264882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85bc5f1053267a812444ddeaf4720b6375809f4ec5da545e5c8305ab35c16a41. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:56:55Z), 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/QZTAT2284458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251cbc4cfab70780df55730ddb5d958e49c471de39a107a9a20b4dc300f3db5f. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZTAX2292400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961bff839ec9d553f1f8c4f01d5eae0452d30b3a9bb9ac0341ee119638d545e9. 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/QZTB92253870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6f382b0c689bdc8ed557523e2ae06919cf2bb4e52d4474b84c648c52b8906d. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:04:35Z), 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/QZHN52364612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946818036c79a737144765f667d419e10a360ec4fb8a3f2742cc09f8a49ae07c. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:06:05Z), 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/QZHN52362212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6076336a370da59e6632f5e29aab6999ff0b1ec6f3787a36cd74a2896adb1a38. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/QZHN62335680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3e794e1b4866ddd316d6a743890a007f4b47c975275772c0350b25a17d94b8. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZHN72323981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b352b5d25cdcdfe4b78765ba65a1c08a5f7abfae0d66c42d67e80155dd401a. 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/QZHN52305364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c7f79dd71887f402349e188ae8383776f7c2b343091ba4a5c114575acb819e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZK6L2350625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96b9b9768900da55dd670c38342c96e4195b06867ef5f68f4eb666218b731cc. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:50:44Z), 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/QZK6L2350626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003eccd24c7110ec47e02968cc60e6a3091c9c277387285e8814064994a37b7d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZK6L2350627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774c348680c8d7d9633b097afd29f2e24568e1504517db6123b59ce6c18702a2. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZNWV2390572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1463f54947e422036dd33db4b59e0afd30d796dfa8d8cbc961b1b52ca0e7b73. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZNWV2390573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca6aa762febb18243bc36caf565ad394b6a228abc0ccd9467a4b8e6f689a200. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:29:29Z), 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/QZNWV2390574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb944dd80070c2bcfddf728511d4fe68bbe9830cdd35c9875a1cd656bbf05fa2a. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZTAW2362466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759f47e8dc9f3e84ab7446513ce608a9f36d85320f8859c734a0969cf936d3f0. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:39:25Z), 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/QZTAW2362470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d7d1f2d90fb771a26cacaf45edf3103c7b1d07326558d2a86f2fde46edd1a8. 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/QZTAW2362471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdafd414e9d67d2c1045c5fe7fbd9715960161be1e408f5adc06756927f6a7658. 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/QZMEP2471013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4420c526378eb83913f724a285ed80c42c511cd21d42a19f1a37d8274f5d8515. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:55:25Z), 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/QZPLR2528376.