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 0x5f03173f02b399594509485e8019588f5e377b9d24ef3db16023c722fcccf2f9. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a896ffb8-a72a-45f4-aac0-d77e816e17ae.json and https://artists.proofprofile.net/proofs/artist/a896ffb8-a72a-45f4-aac0-d77e816e17ae.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A Little East of Broadway (Original Live Demo)
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 0x103d929a66c3ab666ff5dd74629d072f2c1aa9d4f357a63beca6d2f8c3de081d. 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/QMPKX1798363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20054c46dad2888eb82b43b31c4ba8b832e15f3e07f1d4e2683c09bfe89eaa03. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZHNA1919669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c37a5eeb850b02bd8286aee9b704a09d6ce9c3083b15a4650214bd0c8f98871. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZHN92053675.
Reckless Irish Hearts (Live from Matt's Music Center)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca621359bb0a512e7ad273dd41869602f6cbea80a8c106f501e0e18ca7863b4. 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/QZDA82111962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a8daabe8c6ffa663abcac984c7cadd2e1ed2c6664c489c09c36bdbc0951f7a. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:26:24Z), 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/QZNWT2120606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad8f07300342c8f13802219e7ccc0455b4b21e8c30ce76805152458f5262bcb. 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/QZHN52282233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88d29833e0211ead704378f57de80b0d2f9df3447d2d777bdf75d3a0f94c204. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:24:46Z), 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/QZHN52282235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff0c505cad88280e5c4e586f5b9f99473d8dda3eac1ae5ae9a71fb72a1413f3. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QZHN52282236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372da766ad96bd34ae0dedc92e7bef138ee48fb66e8fda6a51848e0d231669b4. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZHN52282238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5f53995b4b191900fd9f8c7f4d1d19c50968b1ff3befba3aac04e64ab9d169. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:02:20Z), 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/QZHNB2392083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a719dfa278c3f073fde35e5c024b047ed1350f80c18e6ca97265665f3039ac3. 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/QZNWW2490788.