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 0x70edb0350f2d8d1352f37c78962eb7049da5d7cd497f37bbddc7ff6fb75929ac. 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/d8684956-f6a6-496a-8f19-73cdd2bfaa7e.json and https://artists.proofprofile.net/proofs/artist/d8684956-f6a6-496a-8f19-73cdd2bfaa7e.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 0xaafbee16e70d73f98f13ad2bcf0d921b3db1d0632acd7cfa4fa334ebbc614665. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPF702002001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bcbb9b4686e4bfcd2357cdfcf9c827ee1ef3bcd7abe80a444a99d39c4c28f63. 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/JPF702003201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8944808bdc869bf9f57d805be722e52807fd59d13a0f9d4d9f369469df0ea621. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:42:16Z), 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/JPF702101002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3539b685d64ef51d1c22a0be0fc665d6ad613d4856ae01fc53f673759028c7. 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/JPF702102801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc180874d6152a3db983583cfa6d63e5a5f67cb14eef679f6c8b56206abf0e7. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/JPPO02200064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63fbf2e8fd39abde37b2d758807f4ee8ff7ce75a8027e66e45681ea3083cf38. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/JPPO02200455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b5d76c0fa7f0b7538a63eaf842994cb15fa6d7439633b3407a8e29b1ac502e. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:06:17Z), 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/JPPO02200459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63fbf2e8fd39abde37b2d758807f4ee8ff7ce75a8027e66e45681ea3083cf38. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/JPPO02200455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd293f581872ff9310529cf2235d7aecf8f43b3f7835b037cb371d998b6e81f1. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/JPPO02200461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3764bbaee33a7b1d4829d23b6a12c297f82db78c049493b9f518dd4ba8155145. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:22:24Z), 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/JPPO02202589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579256aec2d9c1f2b5986baceef70d1bb1c650228d234e12c2aa0b6fb0e2524c. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:11:20Z), 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/JPPO02203841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc5f2a4d759db3c16b3c96fdb3e7a5fa880fdd104dc2895f228e47207bed8fb. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T05:04:06Z), 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/JPPO02205210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68cb60808d29a153ede54745eb61f25defb4e326263f7595dc501f980dd3f0e8. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPPO02403485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e39ba6f984e625915093581ef9b301d72a4f51f0fbd979e04ea45877158115. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:53:55Z), 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/JPPO02405377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5aa098b12e9dbbd388b75e2fdb5bcf39760daa9fcb380978b2012bd83d0238. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/JPPO02405902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63bcb335119afea9b2d94836d1b0cee3fa326b48c9f632ff7cbf3918a91b3fb8. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/JPPO02405903.