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 0x0bf5e61d14175de11d260eb44a4c05c6771dba16f7273d6d644e1c1fb569691c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b2e7335b-10d8-430b-9d74-f51d1feaf705.json and https://artists.proofprofile.net/proofs/artist/b2e7335b-10d8-430b-9d74-f51d1feaf705.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 0xd5bb7fee126273b85060a1a1aad06c28b941373cad4dad379632642193739f7b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZJ4R2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b084a83aa0be48b6ca6c76973b153bd5d8898529db71b16a933a966d9204a38. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:21:45Z), 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/QZ9E41700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd534006ee1ed375f2823b8ab30761592360b29c1461675edfb240da2fe8b0616. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZJ4R2300064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f12e58de1428d9e0f57345fa9cffc1d00616bc3382b0a6aa881c7f1ec04dbb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZJ4R2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a8922f4242ebc2527ed429540215befc82296db1128521f96bc08eff6b2b73. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZJ4R2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4799ebb9de410554749a36cc1aea3cce3f67673f502198990f828caa6a2befd. 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/QZJ4R2300015.
Nothing Like Your Presence (Spontaneous) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0a1a544b55d991c0b1dee62a006377a65f7453a69b027ca7c6882160d9fa09. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZJ4R2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5bb7fee126273b85060a1a1aad06c28b941373cad4dad379632642193739f7b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZJ4R2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5581ac4884f59462cd86fb8e9016bbec75bb5d0f408409460b09d90bb2cd2a7e. 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/QZJ4R2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351654d4a02c481b01276f129826546125700cb9073becab2e360cb9384494fb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZJ4R1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2294ad8df786070794cfc8806eb5a26e21865397648da4a8ba7c5dd78e51a89f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZJ4R1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06eb4330bd25e5a9def08393a57fabab3a9225967a8a72cda57a0eefb1b28c6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZJ4R1900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a9a4913ea9db2f8972d458dacc7748f9069f67fefc01296a844c7451845d8cd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZJ4R1900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b084a83aa0be48b6ca6c76973b153bd5d8898529db71b16a933a966d9204a38. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ9E41700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefed8cf6df15368378f6b7f2049416828ec1668caacd70ab28c2f6547450b2b7. 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/QZ9E41700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891f3df68457c00fedca90963aaa623e1c6e27091bf9a392cbee7772bd26b150. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZ9E41700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4b0fc822a0a59678d40659fa5ae3cfd76fa4ee899350ec666c42dbd5fc1770. 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/QZ9E41700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc843e9094fe4a694bd18d64045623bd3df4085016ed5e3755c548bded481db85. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZ9E41700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f37f5afc3feae40d4bb68b9fde20548c4b4f255041d1494907d301dc70d6e8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZ9E41700017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5581ac4884f59462cd86fb8e9016bbec75bb5d0f408409460b09d90bb2cd2a7e. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZJ4R2100009.