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 0xd78768b30be9966eac4567ccf90b96937ab8594d419939768b4cb827ab520b97. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/14b95863-d5c4-4e69-b228-5ac2a592908d.json and https://artists.proofprofile.net/proofs/artist/14b95863-d5c4-4e69-b228-5ac2a592908d.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 0x1af2b7b12392f70048d0c290d7faccac664c10cd19cfba4c2bf9172f2a990886. 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/BRBMG7500219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf53c6774a839206dcc04ab6c3294a9070968e504edafa166adbeb5a9b0bedb. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BRBMG7500215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959a61a8d8435781bcbd304cfbb3c11f472b2225d2a81608aa52f77bc8f863b7. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:58:52Z), 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/BRBMG7500220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96bc54d0478b99285817942f87f1a1738142f882fcc832bf91aeff7e22a7214. 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/BRBMG7500217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae82463460ca20dda1e8d633e90ce3085d3508a338ffee7a5eeb0319d7c492a5. 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/BXQC22000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59823ac61c3864067cd32bdd5738ee86544b545d71fed02f1b5d8e403ae0a0d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BXQC22000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d421c2347d502ec1d41b33b2987e5e1d0f923ece41774c19539a8388a1d025. 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/BXQC22000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a26602e40a3ff74ab9ff50db259c00b646484ee56ec8b6827c41fcbdcf3b5eb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BXQC22000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd66a2f29c04191bb58fea0b43009512f4238e0fce9210b696a9b442234fe0d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BXQC22000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a34e0b5b7f5306a5919d4221be84ae0c4b122e2f875d36c90c153253e0e03c. 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/BXQC22000001.
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 0x4f047431ec7f3e5e2b5dff13656aa8bb0ec9d7b23e4f5ea4ba8f95363c423495. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/BXQC22000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff731b606f0db654e75bb3b7bf876571cd48937c179aa93c47c01f4e58b75233. Chain 2 (Bitcoin): anchored in block 960430 (2026-07-31T16:09:41Z), 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/BXQC22000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a9e05c3a6e22f9f2ad38427ca07922344ed84ec162843f025da03f46c7c687. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/BXQC22000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e85d4566923c0a8b1f857c7ce66cdb781c7700434e4b55d39d92c5c62264a8. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/BXQC22000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10de387d5c98600345eb159f0316b6c1009edc37baadd0d5c2529275ef812c0d. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/BXQC22000014.
Homenagem a Luiz Gama - o Poeta da Carapinha
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bae42d6f970b445b407f91162d3f807631f42b80aca5259263b9376c9364fd0. 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/BRGAK1600007.