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 0x73108a4620f34a473a56919df61a0416a79829388dd71dac4c8a0487d3f6ef73. 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/eb1c934b-ae70-4abb-954e-def48a62bbe7.json and https://artists.proofprofile.net/proofs/artist/eb1c934b-ae70-4abb-954e-def48a62bbe7.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 0xeb480872c086c10f8b64b4eadfe34710df304c9d5bf2044dff7e28af39b2f0af. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:53:15Z), 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/GBSMU5669345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9422a00fa802a51e71b6abbde5234f542b183921167b4850be84ce002fa49c4. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:28:10Z), 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/USCGJ2041403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a9eb7bb70b19f4a9ffc653d113e80d6f1bf44ca72474f627a5a67bcb986c09. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:49:27Z), 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/USCGJ2041404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ac49dfc8f1581c85d0b4b72483528436f76792d20c1ffb12bd60a7b661ff36. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/USCGJ2041405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532f2b462a0bbd593dad61a0e8e1e9b222b796922b3c6c5902c5b47bfabd3f86. 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/USCGJ2041406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aba7f8c11e154406c2191d0d1da87f2d00d3dd6eaa9b43c0ef6706e6bf09547. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USCGJ2041408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20f53a80bb028a1e9dd7b2fcddbd79dcbf986b8b0c59ec98be6e7610b54d0d9. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/USCGJ2041409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a18bfd50dadf34386bc4d21fe6547697279a10527abdf49316840e32f0239b2. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USCGJ2041410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b756295d62d1c1056e99a8a1db7dfba2ec07c52a08612e835073d562b13f29. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/USCGJ2041411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18efd069fb2b9c0dca32dc0035ae0f6161c91f6aeebae62fea21b17b72686f8. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/USCGJ2041412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7c666574bcce97567af80fc8f4f9003520da1e34e9981c0ac54f099b04f4e3. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/USCGJ2041415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6301d01cb6b9119dc004add0e9e4c22cacb12a8a9c9cd0cdedb8c30b5aa34486. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USCGH2526878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f0366c31b0e73808312b3b7691ad8dea089f7b328977056dcc92a9137b019b. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/USCGH2526879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925d4c28da432133bddc060924a62e757755055d0a51dc37a63663572748e8a8. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:33:55Z), 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/USCGH2526880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1daa17316a4c07a5f6593a6b9e4121085e0a4d4ad89f6d7df0b0f36b1ccaa1f9. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:24:42Z), 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/USCGH2526881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0d0c07abf9163f6ddb4addbc3dc29707dc405aca79e3dc6655de812c94f7f7. 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/USCGH2526882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631685eb3227d7ac18bb1a0a8c6550f677858665f6948b2ae4efb325f4dfb074. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USCGH2526883.