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 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 0x8ecb5dcd34763d13dc314f4c1f958b6bdc1465fd7ddde0b13444e666f0f59623. 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/b08eff75-5973-4901-9e3c-6351b9b445aa.json and https://artists.proofprofile.net/proofs/artist/b08eff75-5973-4901-9e3c-6351b9b445aa.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 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 0x966165f9fd07e379b9bd400a5a5238ac17dbc10b14c4a0be8dee01a15dc6bd31. 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/BRCQE1900025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58abea286c1b1fc7478b00b1bac3fdac18d0e3687745e4f0cb11b72fc047d44. 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/BRCQE1800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73fa8ee08395b5787bae27d04eacc4447a0f61783d3284aa81c7f37383a6695. 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/BRCQE1800078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93924a8c9303b95fd8224e352787b71e8e75e6d2912d9d94422defe238161bc. 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/BRCQE1900018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a55f66ee137e9e841cb5ee9ddf450c8f904c661967bbe6b1833271386c4a4f. 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/BRCQE1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3cdccff9247f05ba37bd183b1378622d55e4c48f51a7592c9ff044bfccf2dc. 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/BRCQE1800086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe053153a979e71dfc81def65fd95ece3d44614351319d75160c1770c53353d16. 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/US7VG1467193.
O BPM da MPB (Incidental Samba e Amor de Chico Buarque)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aaab0f8b77b390a2436e652a1823024e56f44029c9f672d0057781b3b0cf6f8. 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/US7VG1467194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa915baefd685c6f80e3d88777c3e4dedcf4b86854bb6028508c0bd6d2c6a6ce3. 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/US7VG1467199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15e80cad7387afda44d55d91df3eb9d84bca72eebc62d0dc6bd11ee910ff6fd. 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/USLZJ1661577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa7c3f05aab96d533e7a695db4432cba97cc3af69c4daaa6908c03e16547f88. 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/USLZJ1661595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131ea313c99e87a6b68ab886975cac7823683950f72d6e235a55f7658ac8f4a9. 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/USLZJ1662244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835785d597d59cd7520360cc3c9327fd061b8df4ce4c335617c0c7b5ca7f50c0. 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/BRRGE1805076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c0f8b3cca1c861768a60bf6c990865523714cd6f874bc39b6fc7038faaa20f. 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/BRRGE1902566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39685050e3e586fd4c9aca0c2ee9b59d4c4826f19a7f34c6eace4da7697c280. 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/BRRGE1911305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b93f7e79873edb76e3049095ad4f4b9c4744fb015b6214a7e6c182f522c567. 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/BRRGE1909876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928ea622e9895fe71de244c2901cffea25fd1527e4062655b57c42f9c5b76a83. 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/BRRGE1905356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227a231d75f30a1a95676b8e46b13317595f31a889b3e68e20c2dcc77ef8f315. 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/BRRGE1902568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52fccb24ef4e7a57c50b3a76c8d8432eec217784cf0360234a4b5c2ac6b5de18. 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/BRRGE1904604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c20dc9034743af84a90d203f0295681d67920fc14db6995f0bd16f2f2cd95af. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T16:38:51Z), 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/BRRGE1901226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ddd6e36411e0775d0ab62c78caef3c0b92d698f340e4584c9da727f7503273. 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/BXBF02300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd082b8b1ca2913cdc33475cb131c832affcafa6aad2c6870517e4043be89091e. 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/US7VG1599004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e3091adc0252b67e6a5cb3d6a6fb129092d4cc391c6af6433327cb128a55c2. 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/US7VG1599005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626fc34227a8cecc591a6ababf542f6cdfd6ce01274eaee4109aec9658f11018. 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/US7VG1599010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f635e7236e95198af2515bdd6b6c054a3d915e32b48b18da8f5baa606230e2. 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/US7VG1599014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045db71b11b2cafbedc21eff794273e244fea9e258c64a8df5974cafe8c27aae. 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/US7VG1599018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1a1dfeb4c0cb00dd25197c210f9f622e158bf7a3d0ed6dee4d8806b62a6534. 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/US7VG1599243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3e7507ef03ba6b41f41614b44ec221c1da19a378d88797dc1ab6792e1d7263. 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/US7VG1599246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea289cd09e6cdc648560216b5c151497edaf12b79f3d04eefb9658166076dfbc. 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/US7VG1599249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194d9c780572c97d8fe22b801ad9c35fc4052505ee5b1a74e87cb2a153f2814f. 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/BXBF02400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5ac1b317e55e2627103dcee6acd4cd67e79f3acc13e2b0f8d09adaa8a2b207. 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/BXJK02100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e61405b98472fcd20977d3535fb493cb1b9f32bc2e7414c5584978009da0c5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZ5AB1816265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434e0ae7b7389700378540342a27eadf431e0a205707e1ac7750c6ab5f180ae0. 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/US7VG1602414.