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 0xd4afe88147ee554f8ce28ceacf0958ad8cf7a33261f5ae6555a06fe8a2507465. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/36c76459-b414-4f9f-9702-c0038371604e.json and https://artists.proofprofile.net/proofs/artist/36c76459-b414-4f9f-9702-c0038371604e.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 0x3b8d051d7232a12e183d4ba8800fabba2a0900a4101c802b45c9844eb8257796. 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/GX3Q92531841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a226a8f0978ee175cdd35c7a9b20d1350ed15c7ea5e0be464dd17922619002. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GX3Q92531835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1403f3a0937ad909670d8e4bfcec5d7d80f5f2094e0009c869e506b8399a71ef. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:35:25Z), 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/GX3Q92531838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6027a06c3b3e9879765609b942f400ac86e43717f090d47e80b07a5f1bd1619. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GX3Q92531836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590d112d79cce85aaad2803f6241b3bda433311535a2785c9be058d495ec0f26. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/GX3Q92531834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3714e3e7640df0af1ddd0c59773b4682c25a91efe85936b40bad74c77589b828. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GX3Q92531839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889472fab981d70e6a8e54fb64529af331eb838de0c39104bc274e3c5c45c472. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GX3Q92531845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae68bd936d1603605bda2c89533f366c43c466e0b5f35e585342a6e8bb45704. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:11:35Z), 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/GX3Q92531840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe007c589e0222e5fe7d4c61e705228f3efad5de9acfea0e823697ebf7272e9f0. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-20T00:24:08Z), 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/GX3Q92531844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11fbc506716b4e3624a28d87aab2877d7cc95501c4f0b5a2808657444e5aa636. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GX3Q92531850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78de03fcb925242080dd7c97775640025c254163b2edb0f4c8babd26dc41d434. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GX3Q92531837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e71d0b624bd2374b8ec8b9a0677b99bcf6644a2662ebd27513441d1780f706. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:55:22Z), 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/GX3Q92531847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485fdd72b5ab3513dcb9700d0a07356983068a8028a6cd010159497b2d02f11b. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:03:56Z), 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/GX3Q92531843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1136894057a5f0eb54fbf7c5b02f0582e133e17de8ed130a8a18fc25e24999f8. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/GX3Q92531848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1c6a271d32e9624293177b184c0e249335a4dd436f3b880e7a80e548d591a5. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/GX3Q92531842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea04939be6071b5694e0149f1f8f286fdd2de640409a2b6975ee1f93b4215356. 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/GX3Q92531846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135a2925084b4cdc5cf2e15892c8f84183cdc4598dc9b41492ea01463857b9e8. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T19:00:20Z), 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/GX3Q92531849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51a6033fecce06b6eb6bb313829944e175c40737150cdfe18c0cb49742b028d. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GX3Q92531851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2872459c3d3b16b3b04dc6d38700321d870ff4ba554a519dd3c1dcec914e05. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:46:53Z), 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/GX3Q92531854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4277b05f5f096a00e37c304bdbd3dad34f63338bdc6158dadc9f4bf705ad98. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:48:48Z), 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/GX3Q92531853.