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 0x28d20b1b12d4c65dd0baecf7e4f14be15d8e34025c8a74c88e27b2e04440138f. 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/3b8d6d5a-46a6-4196-81ef-0ca5656f6224.json and https://artists.proofprofile.net/proofs/artist/3b8d6d5a-46a6-4196-81ef-0ca5656f6224.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 0x7a5c7db2164db3e092932065be6f84d21f86db00bd5c98cc4afe8385971d1baf. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BRD1E2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d7fc07e4ee23d0a742e9717c8a48cb3b7a3f8bf205f082c8d6671fca2ffdfb. 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/FR9W12319413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58abbf783a5974b13f1537008ff0846fd3291bb9085954222f13709cc4d738a6. 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/BXLL21600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a796818365fdf16533607e77fd3c5ddd07b68743cdbded870f06643e918ab4. 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/BXLL21600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e08d4c1b45237e5c645c7adec258023aa3dd95a459b52438db39ca90d1713d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BXLL21600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473666443d4fa3f10de1613c90393f430a36999f0654f854c82ae652fd498aa8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BXLL21600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf58e73d174980de0e9f21d2395f0fc564cdb4d9f4630eab4bc9d8b61a163753. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US7VG1618624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7751620d8b945011d3e7f5ca3e309999b76f1accf66565c5c1949587ed1bb11f. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/BXLL21600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da4260cc183a4c294c8af1c8ab1d9b4371504ce4eeef3bef7258ac01800eb66. 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/BXLL21600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec689ec496be9959b3b8ed312f45de2b8332aee39be22d77ea7f4985d5f8870. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BXLL21600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5d41799cd71d5ed70ed92dafe2e5b4e1e7a1e6ac11b6256b611e79380ad21c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BXPOL2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08db4dd164dc23341a370546bdf0daddf2bbe904f937c519fa1b4f9301a3df74. 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/BXPOL2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e3432a8bd047598e34fa64e771e321b260ffb7722c0443ec4f60522eabfd8f. 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/BXXH42300002.
Leo Middea no Estúdio Showlivre (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39aef6c83084b72385840f257570639e2899d6099b7fbddba02246f29b1519e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BXSSW2300955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ceabaaf79ff27f404f6ed1a0b2343951289482300e782f3cee6af1d0ac4b34. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/BXLL21600004.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ff9d56f11835b4ad2f73f8f6ed59907630fd17a1274849936296ae15fba55b. Chain 2 (Bitcoin): anchored in block 960177 (2026-07-30T00:21:01Z), 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/US7VG1618625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85aed3db796df75342fd764a506418bf8e02bab56e9f2b81f930ebb1577a7e6. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/BXLL21600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f93f8044a7c455ca4969732a5825227389b77a492efe2caa9e96d1da03801c7. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BXSSW2300956.