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 0x646f6cd8b19c1d3ba407373a50441b27eee9eb5e26391706bd5341b74b728c34. Chain 2 (Bitcoin): anchored in block 953762 (2026-06-15T08:21:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b8e6b626-5f18-4d36-bd46-7df9185e032a.json and https://artists.proofprofile.net/proofs/artist/b8e6b626-5f18-4d36-bd46-7df9185e032a.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 0x652a6e9e097565c4d897f7ce0e904f562c4f9f4a76c487492487106ab3b4f470. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/BRM1V1000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e282844fbf25038fd3a2b4935116e290c91a4be0fc6e440882d2a148c89bb5. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/BRM1V1000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e282844fbf25038fd3a2b4935116e290c91a4be0fc6e440882d2a148c89bb5. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/BRM1V1000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd116bd9b3bea66def218161f4eed835a15f98caa86630576e90b1951338f9e7d. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:05:25Z), 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/BRM1V1500010.
O Baú do Raul Multishow Ao Vivo - Uma Homenagem a Raul Seixas - Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b58e9dfaaedc2dfc71157c36a144ddf4d7b1ac77a2a6710aaf0f80e235a6197. 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/BRSGL0400346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18e4d977d714e9c268f07d8d17c36991dfcf27a3113016ef6b7e5f4ed01125a. 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/BCMRD2100062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca85c6a9d312531d878f70027e942e45d345faf07dc1dfc03ae4715d454d19a. 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/BX9VL2000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d25dcb7bc553182ae3ff8313bc4319c3d0fac5b1da1f02ab1742493ccaf0c2. 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/BX9VL2000017.
Música Urbana 2 - Ao Vivo No Rio De Janeiro / 2005
Multishow Ao Vivo Renato Russo Uma Celebração (Ao Vivo No Rio De Janeiro / 2005 / Deluxe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7405df9690f69dea38eed6a686879ca7d758d7e354c5b969c81d61ce729fe0af. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/BRUM71805090.
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