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 0xab6299ef43dc881e0d81dadcddb04605be80d27eb2cad51f292d9451f4263ee0. 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/77f56ddc-b4d4-423a-9040-81168ae43133.json and https://artists.proofprofile.net/proofs/artist/77f56ddc-b4d4-423a-9040-81168ae43133.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 0x348b28f029582d98c191c8b5f0489ef08868ddce38a61529f0287dc4956b4a79. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/BK1QT2500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b6c867c4688aab7f51fa1027bdf5ad61d72d04426d8d4d36de298f77b29d6b. 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/BK1QT2500025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67262ba94108279ea804ba0cf8898af93a345cccedbfdeeb5349c9a37cef03c8. 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/BK1QT2500029.
Ensaio da Fernandinha em Fortaleza (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da5ff1159cc63df2a13faa86d344cccdd577026883b6ea04d8a86dc14b4a2c6. 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/BK1QT2500063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28ce23e847162966200d211a64ac98ac635dc915296390b3a3cfe49e7b79ff1. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/BK1QT2500061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6101bae1eb254260b5e6640f1c0f0275d1b18d650898dce387753adaf9e4d3f. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:06:32Z), 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/BK1QT2500065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da5ff1159cc63df2a13faa86d344cccdd577026883b6ea04d8a86dc14b4a2c6. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BK1QT2500063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ef440e76dc5b5b748eab387a4f76560623d7952616f18daf3ea42ed5173ba3. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/BK1QT2500045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91d46d4f6490e8e1ec241521628f94306afaa0ee188b6c285b837308dbf22fa. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:02:51Z), 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/BK1QT2500047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c3585c21873c27e0f0278fc73f70fd06260b3acd09c8a1e9acd3c4eed9096b. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/BK1QT2500049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bec5561369401191e24142d149468e04871b4e4589f2cee52d149fcbd546915. 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/BK1QT2500051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013a6464a01838a5fa9133d7051a89659e181f612456754e94884d617f8aa59a. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T14:58:21Z), 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/BK1QT2500053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00a2d27a56bb1c2323bf73ea32b9a0f3271c08ec7addda9c8f9b8bba864be2d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BK1QT2500055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088bfd8c0b56b69a04444fc4c2a30f78c03b752f5ec7d430f0c66f1ba96473b5. 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/BK1QT2500057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b6c03a8399a25c665cf98e73c9a0d03db474b76f32856cea2fef5dea97d0c7. 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/BK1QT2500059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd3e2bc7ed5a5434627eb7f77a2c6ef8ce2be7e04bc8c5322d05b84f5f8224b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/BK1QT2500109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d18b6fac7b074d8e27b4a3e653678cf8d2833efdccf73f120bbc0c8726ceed9. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/BK1QT2500103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8faa12124fc306074e05e4ed80462b6f14f5d6c28d0f0663489b3c38daa634da. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/BK1QT2500077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6101bae1eb254260b5e6640f1c0f0275d1b18d650898dce387753adaf9e4d3f. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/BK1QT2500065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba976641456c7e2de85d6c2d05f34478faed8032c365a1e1f7c250ab1d773e5. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:41:35Z), 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/BK1QT2500075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35afab52c88606e5db6c9426a55f05595c809ed532a3cc7122b5b6124adf65fa. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:02:31Z), 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/BK1QT2500067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d25a0f67fb8a62e0fee22676d93574052befb1619f624ad2b66c9e4879b116d. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/BK1QT2500069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1735803d657f94c45089105eafefd04ffee816285745cc553b68db662562158a. 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/BK1QT2500071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da5ff1159cc63df2a13faa86d344cccdd577026883b6ea04d8a86dc14b4a2c6. 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/BK1QT2500063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7b27759b907ede12d321a081a5656d6e56e1e083de645b1a2c33a816d36f22. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/BK1QT2500089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f1ec8e28220e63e4a17bd74f86f6b6fbb2553c0e7f670639f2e90193b8d390. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/BK1QT2500085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b10aca425cad41a96291639c16e444907bab3dc05b83ea4871539801b2efbab. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/BK1QT2500079.