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 0x0428d4177bf09b01ee79cd01ba5a6be5d53954542f9b0f80e758282d99015ef6. 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/2a40d1f7-9cd3-4e47-80f4-428b1a5d6632.json and https://artists.proofprofile.net/proofs/artist/2a40d1f7-9cd3-4e47-80f4-428b1a5d6632.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 0x0504d33fe234c714ba6f64058d00fc28406d0090ac6f2c643f2157822563ce32. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:43:21Z), 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/FR8MA1800320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe113a323a077e1df5a988d335547b2e2004ec7d996e46e0d3eadff91ad05f62c. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:17:09Z), 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/FR9W11806403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9823f92de7a4b1a53aa946c7ba933751788dd29c575f02924ec16946228fbd. 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/FR8MA1800300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfebaac059c6182bc9d42fe8a6cf214bf8aafce70574e71babde2ed2cfe617d64. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/FR8MA1800330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58995561f3c914a434b0ade2c640048427f278ab2e0128497cd21ef75fee6c28. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FR9W11923717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1998ada7bb7712ddaf6d3090a8ac29860ed2a3589462fd2e69c691082ac8a0. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR9W12002228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae92082bf7ab4e0eb8f63573abf7a998442949ebff5b0c0addd4553f01caa973. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:34:38Z), 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/FR9W12121066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6990b2f473aab1d9bed0f3cf3db09f5745044e16ef659d4fdab5787eb5c9e4b5. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/FR9W12121067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f3ec3fc80bad797f75182acfee12c2c31311315b30995898c875196bde58a4. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FR9W12121070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x366f9a6a42735b340ba275139611ec609c0d3b5eddf938ac77c8fff20d304ed8. 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/FR9W12410075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0627bc95fb06fef7f742f4796c7c3a023d72cde9af2de22d3699782a7fe754e6. 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/FR9W12401543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x366f9a6a42735b340ba275139611ec609c0d3b5eddf938ac77c8fff20d304ed8. 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/FR9W12410075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35af45cfd907250b47d05650a12bf8a393f3737749311ebfab0c8de657c3083. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR9W12411324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d56f0bbe8556d4f4e5f7e55679b5dc5812f5f4f599018813c84fb161eefe54. 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/FR9W12410076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835ee5cdd3152bec52bbd55e35a2f2cd472c29a836eab3d78afcb1e47bfc53e5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR9W12410077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c88fcf55e27696c494bf16d3120e0d38bcb0de6ee78bbcf2a37f27dac9b33f7. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR9W12410078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72481cb74177434178e21197a6a86b892dc95be93fdce8fa9dc45a654594a4e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR9W12410079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6162b28ecac6f1f1633a7d96b4c5506b60b4d92d97e94cefd7ebf7208489046. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR9W12410080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac8f17790eae71ba348817ee0aac4f5c44992e38ec50f669a345affe78ba48d. 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/FR9W12410082.