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 0x37a47dbcee3ab7a2f74c45b42a50d1292765392fdd220accf76e0d577e17cd13. 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/f78548f2-18d9-4d85-b077-98e95788c4b8.json and https://artists.proofprofile.net/proofs/artist/f78548f2-18d9-4d85-b077-98e95788c4b8.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 0x47455f93661cb0023caaa6a1948a755a29faf2cc8e148fbe5680ee4be4be3cf0. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BRSWD1500040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3f9b777ce4ce7a08b2b68dfe9dbd53642eae3e592376958f94c356bc28276a. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/BRSWD1500047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac91d9e904316e2f649bac95250495e236957ece95ea8c939879f515285393a. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/BRACT1200275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed9d7980b83dff0574d0797ebb512e7c21d1d72ea25061a971cf9292b0f3fe3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BRACT1200276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab630d7f556ee080909c2f030320d7f90cbca090278f8adc8bf6e2f46f4ade1. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/BRACT1200277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a77fa1a3bda3836897fb6134a4ff0142ee4778266abbc6aeba84bcabb45daac. 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/BRACT1200278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6694b30fad480d512e627bb1308498d0db3bb260be34e0d8f176cbc9ff4bf69d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BRACT1200279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973845097ec074e6966530dcb40a0652a82fea128a31114d2bbd1d19a962cff7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BRACT1200283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1f8e863ae14e99debd731010749395bb9d68926f217626f39997b38abcee53. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/BRACT1200285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3912d7b0514e746879251ceda771a7ce4f34afcb93c4f9a4aec6695b6ccb20ef. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/BRACT1200286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909f24c6705679eafa5c5e61fa6a4e41fe2bf25e92b57d9d45fe7fd87aef6c0d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BRACT1200288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818a50fda59f98284f5eec2893598fa4e2e4ef9c119c602087b86367c4f919c8. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BRACT1200289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931599c31d92abdd549e5e5f431f6c9289dd881bcb075a85bd839d9599634340. 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/BRACT0900494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf683e431dda2d8047fb9f5094d1210c8765760f8aa4234ac78b36b72255d067b. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/BRACT0901046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f23ccce8bd3dbc1c362848cc579adb93610c6682315cb57c492eeaf498a1b37. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/BRACT0901056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992ef38f758c190c16c7406dd82f2c65ce5b4675a60ee549b71df2e7289774e4. 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/BRACT0701526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553217455ca687f8a7a5bef2d4998407172afc32a07ad2ee4c83125b5363c092. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/BRACT0701532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd25ecbcd077e8710da33229077eaa7b37af509536d30d85e2d3f7f407ec1e5e. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/BRACT0701535.
Estendendo a Mão - Lidando Com Aporreado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2c8bf3c415c385431cd91b3ce3380516d8c6bcdbcecd1accef561d7dded056. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/BRACT1000247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb15192760e6e7a79f974d0cb394bd225fe3495467e11da65d0ab987c139ffee. 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/BRACT1000251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714ffa48ae31f626f11d220859ab9192c9b2f0b91d85105f6e5f5253c46f9063. 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/BRACT1000253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a47b0a3941e59d9397dddaa354e604dc421d62ab59bb6646eb03f773b7cf02d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/BRACT1000256.
Pela Cordeona do Tempo / Contraponto - Ao Vivo
Churrasco e Vanera (Ao Vivo em Porto Alegre/RS)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba824f46a65c7da6aab3160a8f5ab9a1892ac3aaaeea56efc7093b2e985d216. 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/QZGLS2478202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575b651690be2a79b21a448abde755851a475597d4c80b36b0d13b4f49d349c9. 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/QZGLS2478203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79415b665adffbae87ac6a3ea76853330921e4eabf16e8e45c6e436a2ca1f3f. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BRACT1600741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401e427750a95f05b57ee9224c9306641006044d56fa874f227c5e71b6dbbb4e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BRACT1600414.
Alessandro Muliterno - O Brasil Narrado de Ponta a Ponta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef2a84382c61fc8e3c4f10a4c221e197db51c2fcf23f5e1812b2c6e2e26ebf3. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/BRACT0900505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4cff6765753d9eaed4e177a9f3485879604b112aa14c7ff9605a0c383fdc5b. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/BRUSA0700942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d18eaff692ed2f7d529162761e4f8809fa821da516abaaec85fbf14a241f54f. 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/BRUSA0700946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532e79819b490204c25db2b391a8a595059ffd6350b0732f2e41e32d3e562366. 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/BRACT0301019.
Churrasco e Vanera (Ao Vivo em Porto Alegre, RS)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x051384366b5ce02bb70bb73749e82921e01841927491509c732ecf76a1ef9cab. 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/BX3662400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224681279a66c5f8047033bdec3864965047d64356f8221b706455e13d1f3d19. 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/BR2EP2000009.