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 0x7c1160cf9882db67f6cb1c862d7c76bad465ce0aa8ab23dd834434eb80c6992d. 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/1e5600fa-ccdb-44be-a5c8-84193c2d5d9d.json and https://artists.proofprofile.net/proofs/artist/1e5600fa-ccdb-44be-a5c8-84193c2d5d9d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Flerte Flamingo (Ao Vivo na Sala de Estar)
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 0x5c3a4bd84d3f73f3ecc14f7e0dd55c1963aa137ea25e6af01361e81a4d5013f9. 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/BX0892200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4da52bd56fb90fff9d4ab3ddcc29a2b953751e0451fce3e9c1dce4fa4be2c30. 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/BX0892200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1920714db730d65c226e69f6012cf030b0b7868fd2fe82c1c08754ede921d9d. 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/BX0892200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850a13c61d254c2c8a0110fb51fd21934dd664a1ed41767394417426098b42c4. 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/BX0892200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x784ce4ec78344f7526ddb5af7161a20de0e13a8dd951c31682814c59b8028079. 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/BX0892200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x784ce4ec78344f7526ddb5af7161a20de0e13a8dd951c31682814c59b8028079. 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/BX0892200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ab594b068bed82fc5ca0e4a61f9f2bb656412cb04489fda67d37a2ef6925d8. 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/BX0892100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5294e27043573b21c7fa8ca1ac8d017fe03188cc7fe1685a9ce075addb734735. 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/BX0892100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed9df643debfb6385084fdece59764563e97453476820532bae82f984ed48a1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BX0892000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0614cb80c062bf1099f8dad8087f848dc956f889ede59cf3fef5dd70936487. 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/BX0892000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a8f6098dc3d62b73c3aef18a510dfba60054454d8ea1e948dd5436df177fe5. 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/BX0892000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425857b97f484bd22d2a79f836f0a8157d0885ce537d58d2ba08a31681aa1be7. 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/BX0892000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd630dc8c407249e2e0a2c17ee5bb84a66b97334a9077cc59aca40d048572b1d7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BX0892000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a5100aef4d3f72cb9c3c45bff910030061504e22211a58822a85592324cf81. 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/BX0892000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0614cb80c062bf1099f8dad8087f848dc956f889ede59cf3fef5dd70936487. 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/BX0892000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb4d37490f36b958d50790f4d62291a609275cb62aa629a8978784b7eda7b5c. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/BX0891900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164a90b5e6a9065444fde46fecb50988508fada5566b9c8af72edbe0ee060206. 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/BX0891800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ba54765d3707792bc5fca97e6628e8c3d244d15ac3a7383aa096b7d63f6df6. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/US7VG1841438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x902383007d5737ec2906dd5db23678d03cf7aa27812baae0f920f5731799ad8f. 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/BX0891800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67dc9997ed50bbe24d842d43342e570949ea7e351356c94228d5549df5654850. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ5AB1778660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b401f17ebde3c533110603fa26bac20249c8d95a89e4eb0798d834c85092d3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZ5AB1778661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9512c402520bb1653e6f350e38e060c593e2479ee0191a8e1432a26161fc5f. 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/QZ5AB1778662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4594f7b71b298418e229cd7dcd8ad43a7a34b48dc952486671ad00fbdce273. 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/QZ5AB1778663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82776a8148b264dea6ccbb8645ca57a24ad7a607b0d8ce82c49125eead12c1ce. 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/QZ5AB1778664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993be47cd5543f41a2d37804e552ea0e4bb81e6214d7771b7e3078af421ab04d. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QMPKX1790284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d07c58426e450b7901c82966feecaa3858cf1929a950798370cf397b36881d5. 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/QMPKX1790285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0f1f726762864c1651661d468a896595a931bf48774db49be052c962c1bad9. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/QMPKX1790286.