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 0x12d1fd656c615d6f8c15bf5ca7f4e05bb89f335f2441448e69e64704d463e5dd. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/33c61a97-17b8-4f07-b9d5-112cdffc01b4.json and https://artists.proofprofile.net/proofs/artist/33c61a97-17b8-4f07-b9d5-112cdffc01b4.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 0x58382c169c1a470d037350fe5910784a0d332fbbb5091785e7062afff86e50c5. 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/GBLFP2394574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527de3b77e4290278792afdd1bec2d763c3a6fa6a0096445edab75b8b452b049. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/GBLFP2372009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53654e6c6f28f221915e853e6e420738fff247b362db7a69d62f7a2c4b7a741. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/GBLFP2394573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa965971c3416ab921f421ceb7c2d843575a78c9a17fc51acdb1c699cac0ba2c0. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/GBLFP2394570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ce7fac34852e19266449c443ddf329411993ed1d05c0384369e630a31591cd. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/GBLFP2394572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa970194ef85b9fe91363075041af7554a2bef3a870685b6714cb93c934a122a0. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZNMX2282578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a125b4522c80c3d44411cdf99c20cd2f89e0746e228ea2500d436793e07a2b. 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/QZNMX2282576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6066a0d240d8cebef6daaf5a2b1dfbf11568541ae16999228e522db450cb58fd. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZNMX2282579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92db992cb1b919ddcb2b606b47e9f3139a5ec4dee362455765e8905166266348. 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/UKXN22201112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7927af850a8b3d40b8440f5e4087278c1c408e62819a68f8256078e3ae61cf5. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZLL92226657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970cf2b3997293a1524428a4eb23098dfe82e6fccba2ed14eb384cbae402fa44. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/UKXN22201107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa02fc2c7baa06882e21a87e6108aa8b5018c22823f32e8cc3f17dae152663d. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/UKXN22201114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bff371abf71d5f6f0f8b42bf54b4d9118929a9ef8f165f2395344557eb48e80. 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/GBLFP1850209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a625ef2f709283ef98ec5bd169b6c22f23e3f049515838c0d28ce2d55e8845. 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/GBLFP1850211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af9c95a27b80ee60ddadd7ac7ea592fbaa1acaa118ebdc0e55496b0eeebdab4. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/GBLFP1850213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58382c169c1a470d037350fe5910784a0d332fbbb5091785e7062afff86e50c5. 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/GBLFP2394574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c9d9af4456fdf012069a7d076530995eee9358e55ead322ba4001f4eb26834. 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/QZNB82215688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe123e42bda6ae1c8148b4d43e81d066c362cd7e8c2b24dcb630a29c85d803466. 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/QZTAT2117894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefee53bd8943bb91e10f461b405cb1c38d9e22b8623575dbb7909d706711973f. 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/QZMEV2191573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5668bd4be6eb02c2f2d7565ecaa6e91dcd12ec2d85f69b720dda41a32ef826fa. 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/GBLFP1853050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f19be2d31d281b001726cce353364cd5dcebf248886852926186189848cba1. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/GBLFP1853029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd359cfe0a5f599dea83ebfb505a9198248b034b5f06db085d094ea21a315b62. 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/GBLFP1741979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2894d2465cb82371f9f6be66c92b280292316695b6b6578f1f6d836e844966eb. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/GBLFP1741984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f9541fd2213e17ef5df72542428253acadfd362393a0a7a5a9c6fbcd8c554d. 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/GBLFP1732245.