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 0x8e0ac122feb86dbc26bf8687b2b40ef375b9466474d4bab9128fc7957cb3eb9a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/15333d0d-3365-4a9f-a67d-9a885d8306b3.json and https://artists.proofprofile.net/proofs/artist/15333d0d-3365-4a9f-a67d-9a885d8306b3.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 0xdae1a6bbeb4ba327146f72dd788df55812c7adfc57e46dfbb0ba543fb21f1410. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:27:50Z), 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/BRATT0900171.
Minhas Canções na Voz de Fernandes Lima (Playback)
Minhas Canções na Voz de Fernandes Lima, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe356876d1d711758a9f3f60330fac90ec5fd948c8afd9cac9459bb5c2b5dc9a0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BR4GA1200066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09e4296c12c2ffd1e91dfe11976f9fe2ca19dd2af7b95bb1a35d6584af27143. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/BR4GA1200067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8555643caf2b0a4e54812cf443cef78fac11b0d20a407d404b89b343227b91. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/BR4GA1200069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4724648a878efab0f3a4856fa8c43657167532a765d818c5c73ea0fb6693ed. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/BR4GA1200070.
Minhas Canções na Voz de Fernandes Lima, Vol. 2 (Playback)
Minhas Canções na Voz de Fernandes Lima - Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6489a508dc9d6d88de8f09ad5ccb63a9cc47e045a4863044dbb0475bc47ba9a3. 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/BR4GA1700041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ff043e2d34a04a89d6366536158ec0c660e71517fdf12a2ea160ad5aa0e168. 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/BR4GA1700044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba47e226530810889e5b801e652670b79bf1c0167bd65538196ace33a078d459. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BR4GA1700046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3240b00da53213b738f842490ade7c4e1753c9682d6d2acb8001e00a5f1c7d2a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BR4GA1700049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd45c5c29e8e581b287004afffb7b39a381d3700eb45a0a35c761e1c75a6da9a7. 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/BR4GA1700050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b76d1923b5a4cdc0f24d1d762c534810525cb33f04b196a8891e95d18e3ba1c. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:51:29Z), 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/BR4GA1700042.
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 0xc3f20ee30874fb494cc0062646d4189502d95b4f77a092ca1e3c297317b48267. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/BR4GA1700045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f82314faf81ca25100e758f3381e4be349a38466c0a1bd568ce348337862935. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/BR4GA1700043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188f645c379bbe14faec9a3c8296a060fa4531e1dbc75ee53816b43764711cb1. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/BR4GA1700047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0efcb31128958d0d8982fc0de1ddb400294c52a65ec1d0dfc5bd13705c08c2b0. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/BR4GA1700048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f450be56917f5dcfad6ab6ed3ae00d1aa4aa18066e7a3669b12ed882604096. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/BR4GA1700051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8351eed349e16d0d1634642c9535630b29cb335d895c69dfde7ab28e25cc5908. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/BR4GA1700052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8084d8a62a0d3da6238e7f11b199f11901309cf08960ac9ceda07c669b49378b. 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/BR4GA2000074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f923ea33cf7fa0b924e6140010bd2e83624dc4870608fff1bff9756213a5965. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BR4GA2000075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c52702a306f9b21bab99125c273cdaeb062b2ce7532cac35d9a45a615cb5c2. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/BR4GA2000073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb39ea73bf9eb1380c80a9af848ed4ed56f57302bd2f077889841f8b6fac1734. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BR4GA2000079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7bdb2fff2d2b53a5fb175367ae1bbec6f65fa28353af3e3f2c8b441c83cfffb. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/BR4GA2000082.