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 0xdd5b20fcb19adbe9bffee049b61bfa82c6fb3ec481a4c4c571f68ec6f5714282. 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/6f5ce48f-2bd9-4af3-8258-f2375a176776.json and https://artists.proofprofile.net/proofs/artist/6f5ce48f-2bd9-4af3-8258-f2375a176776.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 0x236d3f3bf027f7f033f56482d661af5d6a386bf6c6829577ef012d763efd3a88. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/BRMAX2100933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61dac1ebb20085d748e57b30bc44ac783f2ecf2d8a75cf37b25bca6504391903. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/BRMAX1402039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6586735376e90f3f14f25a531c36d806d27aba5b8aa254ae072cbd1479febd4e. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/BRMAX1402532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba45562a72e0bc29f790684561204e6f2edfb698dff506cd5810d0cd1646fb1. 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/BRPOY0800291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85623cdbf0a9d383bf6bd8cb1acf8a8545d2a7649c4d85ca63bd018b14a370a4. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/BRPOY0800292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886b4363e4bcf05ebe0f38ee2f65600fc89822505ce18f3535b0c4e5a2b600fb. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:18:02Z), 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/BRPOY0800293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e32599e15cb85ffa52a2287e01092a853aca64a6467adc31f50c312bd65986. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/BRPOY0800294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab97f38c32b04e15ae3fdac99915d724868e35f3a8933d971be1539b51ab894. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/BRPOY0800295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957d9cb1a3060a736e3129be3ac8fcc9952e241fb04bf9b75354e4477a1015e2. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T10:57:30Z), 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/BRPOY0800296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6c324d8cc729bdba70fb2d2c5721940945bb6da3f0157e7ff67eeaa959bf23. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BRPOY0800297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe2a892a0bd168774b3c1afa0051ea5384f72726ffb235d5d26f92d2c94d5c5. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:39:06Z), 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/BRPOY0800298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb39d2de73b3c7e8b6dbec57ee180efa85151d687b123f74cb054454de480578. 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/BRPOY0800299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c0c6490bb6ad0e116c0caf4b27d3941a874e35273f26fe562995e97b73511a. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/BRPOY0800300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1000f2ec88c577af0104203ee084416c18e24dbf7bbb66fec5ff546db56ba11c. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/BRPOY0800303.
Meu Cenário / O Filho do Dono / Tareco e Mariola
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a6591653128424a1d240a1a7977b7cdb5dfa6d686d06596ba517598bc78744. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/BRMAX1500400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391f4c6e6f77072410a088c6cec6c5cf5d6f407280a5a1ebd42b1360637d9583. 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/BRDE70600095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a688078129e49e464da00f7abb4c280c77f0da443fd2a47e2bd8e91d141242. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/BRDE70600098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa474e7ff433a92f95369fb386f4d8c33f3bedd93f293d854ff720fbbb7ce67d9. 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/BRDE70600101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa062cc8379596ec836aa6c51dd6b5bc2b0a2ce739d54dd730798a75be3c355c8. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/BRDE70600104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953987f4027027fda2a059a3305f32b61e160b9e984d38eda77a4858fe66f861. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/BRDE70600105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752f961b8f2dbc60731c15c04fe12b670e3661cdc06811799d57eccc8cc4597f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BRDE70600107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa45337ee2ff6f8a1114331310611ea1d697f4f3677515631ad9ec978b8447a3. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BRDE70600108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794fb55ac501c8ba3712967326e82662dc327d9b5686f61fd8282091a0642753. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/BRMAX2300243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486028c72079c99ac1b18ad4f272e95b795656e1c84226d2a9602651e26a6b7b. 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/BRFT82100052.