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 0x8ac443e23b6db791972316198b1d3d52a54c5b04e749a890b5cb49f4397a6b2c. Chain 2 (Bitcoin): anchored in block 953684 (2026-06-14T19:51:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/655658d8-aa14-4041-9ec2-06f3bb0a3e19.json and https://artists.proofprofile.net/proofs/artist/655658d8-aa14-4041-9ec2-06f3bb0a3e19.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 0xaafea62fa9e1d0068198d5da592b40356842b7c2f11d63a47aca10c2450804e4. 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/BXNT62207481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee24d25d422225865657084860bf9e4717ce3106f0fdaaecda818214e44733b6. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/QZ5AB2397962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56a3e0d923cfbba61e40064c9a9492b4767600c4504916d53fabec192c264da. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/QZ5AB2397966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec93c170f3c7a27e031c097c84de886406b4db2500c24b1d802e9856d94e4ea3. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/QZ5AB2397969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c5560a075bb8a73ddd4d6b658b5d6c57535dde9ff972f7d10b8ac142006534. 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/BXNT62208090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22a880995025fb4b91c5cfebe37f28f84b9139e5a1c4d4e83192521ea507e71. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/BXNT62207161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f0043dbcf80d95bf95da401f77cc30d7a207ee274722ca60b61fd9b07fe794. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/BXNT62207316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f6d815cb6c17301bbc784a564632843c14636e1bc0af865ba747c12cb39cfe. 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/QZW9M2441391.
Cypher: Papo De Função - Trabalhando Com a Verdade
Cypher: Papo De Função (Trabalhando Com a Verdade)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31aac0b2ef76b410e96da3a5ee21bda06911c4a7d4b96a5ab8098d824a02d6b2. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/BXNT62205428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0792523d5cb95ae94b53230d325e6144970eea4d972ca0a1a16520ae28e5096. 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/BXV602300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a2379f993adc890bff07c70d8818c01aeca92d4f1b78a8f5ec8a041e124d44. 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/BXNT62208406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f0043dbcf80d95bf95da401f77cc30d7a207ee274722ca60b61fd9b07fe794. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/BXNT62207316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3202d0308a8bc6f5a796a5dc04e218e5c08de17c5022f88b7caee2f94ef756e6. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/BXNT62400119.