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 0x2fd1020a27eae8290b2357923256fe4a1b4bb42744527a1485a6b83c27db68c2. 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/aa06ca7c-9627-4804-93e0-e7bb0d9c2200.json and https://artists.proofprofile.net/proofs/artist/aa06ca7c-9627-4804-93e0-e7bb0d9c2200.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 0x1812c9ac7c02329e73b069aed0b213d5d359bf45a5b221ab1550b503125ebf0e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ESA112306934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad41bdc093ca03087bfd02d2ce6f9d7c371a5bf0c281f774aa7520d44dab0cac. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:04:12Z), 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/ESA112306935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df423d743f8a19016d41384d653abed18242eb6dfde7a5b345525b6907b447f. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/ESA112306938.
Bar do Rey Vaqueiro e Convidados (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02ece549e72f573fd3f8847ee7809cd9092e263f83881222c9653009e54aa08. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:55:04Z), 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/BX2IA2400074.
Foi Você / Estrela da Manhã (Flor de Flamboyant)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea37635952d5684db2b8425cce8e2919369703c0621c995024ae0920a7b3b2c4. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/BX2IA2500185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa61da935596420c46bb107d2d312e35dc35ae809031bd50b59ade916633da79. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/BX2IA2500161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22b86256e3873461459f7e207a6d8be649b520320dd8945890327b54c556d3c. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/BX2IA2500157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715261314d3ed0f0338240740d7fd4ae0198ab9b35d9e8e50e68ceca1228821b. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:47:04Z), 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/BX2IA2500183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6fb6c4ed46bca6f8fccffb63c64b503e8a9ae4b32b58ba23ef04eebfe9c122. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BX2IA2500178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe079bab0eedcf9a4734482f328c6c46ec3e2183fad642d27d337957b429229e4. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/BX2IA2500163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e367f9e27bed899576e738af33d9da9c76d406aeb050086cd623d915c609f9. 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/BX2IA2500160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72065b7f18256fd23ed4d24b924f74fa97784225af37829cac88022f771dbd96. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/BX2IA2500153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c526a1e234a7fca876be1f3c652108c476a71eddd3c1f66b6b08db588580273. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/BX2IA2500180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2113a3dec899993d1ad5a7b51372e1e82021d45447dc70f66b0ceb6695801d91. 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/BX2IA2500182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76f4c248681c8780dad4edda3e808446d605f8570cb9a025d9309567395cc2a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BX2IA2500181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f09f0115d302b865bb2c0b877fc4955bb5ed5232b709f11d6b7888c2486632. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/BX2IA2500187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac5917016eb599ee14ce8832aaa718762eacb1773aa84a55a5aae76e79a4928. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/BX2IA2500179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c2680bf5e6f6f8a37d25edc331e692cd90296b33bb4567fa5c29d0d54e76db. 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/BX2IA2500162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4c242d69c0888859d10f743bd647c514ca8ce91b63f90998f13764b369bd46. 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/BX2IA2500158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0209620bf2af0dc0e289d1b4333acec6825277f133e99efdceeb0fbf433cd95. 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/BX2IA2500156.