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 0x34906ed596af716d99826c8bb03317f493305ed113eba5ae12b9d668fbbe2312. 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/950aa76a-d74e-4ba9-9935-c11c7a1a7f69.json and https://artists.proofprofile.net/proofs/artist/950aa76a-d74e-4ba9-9935-c11c7a1a7f69.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 0x7ba6c9898addac971276a9296a2ae140806852c796f37d3e8e9600d1cef94d6b. 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/UKEX32407790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e05af6bb03c16bc8d4299d08c78c69dfd875938fa0c8c401955e69a890aa3b. 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/UKEX32407807.
somewhere you're happy (parallel universe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46871ba880b379fee276ba5f4db033a02821f70e9ba9702f2e450a50279025f. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/UKEX32417872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5091b411b536b36a15af12b665ae099da1a22411db4bfdf0eff414907de86293. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/US3DF2436668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5628b9810b170067cfbc5526af9a818da8fbe5a8ae41e9b2857814f4bcc9335d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/US3DF2437832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b396c4029dad85a82e51a556e3c68b805e9d8a7eb7fab4316f5fcec7c38cfe. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/US3DF2453127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd12f125c96295f4a214021fdd7d5c7cc000a9620dd878a5161bdea9d403d3ee. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/US3DF2437834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2a04232d4f8001be6abc3f64963498b81202ebfce16a6a3a094dc8710339a2. 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/UKEX32434056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49a0e67fd1b863d365f92c466d4a5a1936df86e08ea32c4d8a305053da4cdc4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US3DF2453171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff8662fed79c8677a8fcabd86feaa1398dc5684f8ce7c2758a21a4b0153dfa2. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/US3DF2453172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f2966e0a75296784b3e54ccae8944505466e4a03f8fe33444184caa92d05296. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US3DF2453173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5caa3d9f9057200b640579cdd8a30d3ae54c8032bedbeb10a5418bbd8e72d0ab. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/US3DF2453174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80dabe659c5f2067df1a93c760b6b56cf2fc8db7ad36adf7f1041d61d2abcc4c. 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/US3DF2453176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39179689bc472ba73fce31f8bc6ead845e7103fe5cfb2fdec9263283c9c0736. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/US3DF2453178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf324cbb59a6455c66e1fab688bb636dbc8a679a7ff59d63bbaac5323842d3783. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:55:23Z), 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/USANG2473868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ebba0fe840144cf552bd7ace5e056cae2069996d48aa2e10fdd73f4ec193b9c. 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/UKEX32462888.