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 0x00bc4cba42e497f922bfbf8316f84e3f33dedcab62d88d281064514bc1f9c2eb. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d8130462-b08e-4250-82a3-b959d39d7345.json and https://artists.proofprofile.net/proofs/artist/d8130462-b08e-4250-82a3-b959d39d7345.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 0xa1acb44826ad0606a97ee1c395471ce54413bdfdfc1fad34d20df02c17fe7867. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/BXM8D2000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847d0c624ab9e0153ca91103e3765a0b9864b25ba736ab6bf0e930fcf8222b47. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/BX3HX2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf6d51889b350b68a779e199714086dceb4e95c0844dbacc08ca650dd51832d. 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/BX3HX2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8fd698016d7502d2dbeb12c4d2bab4ef2b4a52132bfbf09c3e786bde827198. 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/BX3HX2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5944e8a6b17bfcc84c190e50bcadea7a20a406bfbaad8cf7cb9f00ac67d156a2. 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/BX3HX2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6024fea7828159997d905fe82ff8323ef7ba2235ac049fa054401f5911bece. 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/BX3HX2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326af209a00b5f8c83ff5098c7fc0220b5f3eb4cab3e5b531697dba854aa3ba0. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/BX3HX2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ce0abd2a290a6eb8315d70bc8f38b652b51cfacc9730840be65cad56764fa6. 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/BX3HX2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58321b9b1340fd283dff8beade99370a0d2296c25d1b212bd357ed759e32735. 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/BX3HX1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1938ced592fb447ee22be340c9a1d53691466506516f97feed0216d9684fabd. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/BX3HX1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8124ff2defe894126f72fcd4de5bfa06506e2a56c9919b09d3e1af610bfd0f4. 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/BX3HX1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847d0c624ab9e0153ca91103e3765a0b9864b25ba736ab6bf0e930fcf8222b47. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/BX3HX2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf6d51889b350b68a779e199714086dceb4e95c0844dbacc08ca650dd51832d. 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/BX3HX2400001.
O Maior Trem do Mundo (Trilha Sonora Original)
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