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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aab5b4946ed93cacd02b88142294d62ef4ab3810cc433123e07b6b22b47dae5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f2bbaaed-7e58-4286-98ea-b97c9e624a54.json and https://artists.proofprofile.net/proofs/artist/f2bbaaed-7e58-4286-98ea-b97c9e624a54.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
De Porteira Escancarada (Abigeatário da Vila)
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68f906259fe80ed28bb0a056212b0c32441058202d685d22a2d39caa64d5227. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:10:05Z), 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/BXG5G1600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9072e9ff9b40dba55dc7083ba14b5fb46ca0e033d8e7716bc78e1f53522f5de7. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:47:26Z), 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/BXG5G1600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c527f99f946ccd0957493e794b30ac0a20da81680824a9256160c0fa2f86f98. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/BXG5G1600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34301943103b6c7935da854438b4e484ec75c5f29f829204b171bf1c63d99b15. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BXG5G1600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2c5f084832e9aed7df58c3d04c335cb50e3df30cb8ddac0f1b252c9c0a6a70. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/BXG5G1600013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6010455ce39f378577c4ba346dc472ea43e1fdbd7dc6e505d28fc678205e5107. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:04:16Z), 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/QZ5AB2174101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc1b4b3a2bab5237d6806a8a0e949a36f158094e242673eb78babd293b8f5fa. 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/BXG5G2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99551328d0cca2888426ef485798d6281f964df6b9b6380d98495302da4a8e74. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/BXG5G2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984547f751ae295a92eea505ed6abfa0ffbd5d5eccaa3e5ed521c25f9a42a698. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/BXG5G2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d513ca1647914d5f1e8516821f74d22858fbc414fc3bdaaa17d4fc804d1c1d9. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:03:16Z), 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/BXG5G2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab95a921219724dc306dbcc5b65dc097efa2956217725deb1796b709df332bd1. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/BXG5G2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e59704377d179c641c45379e620c7f28c4d4a859becda56b7926e03b365ae5. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BXG5G2000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c15c428d70f975b54294c99ba053c9efc14e2a901753e93ae67b17017d8fa4. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/BXG5G2000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa190ea4d3bb965806e93bd4d114de846f06ed2ae30170e9bc8080568cd78c310. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BXG5G2000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86fa97ea8116dd066b15829fd4ac29a2c778f17d79d52e2ba19b89ff622287ac. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:03:48Z), 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/BXG5G2300001.
20 Anos de Canto Crioulo: 1º Movimento - O Coração do Campeiro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27d578a658f7ab2bb159b9389026d616a2ee44e18861eec3507039bcc501888. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/BXG5G2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7e9db457318871a92cfe968b941118ec8643581c9d31a504ef07d44847d516. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/BXG5G2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6653a58ed725c2cc0df878e709c16df7a46cc5cb285bd1077c8e94afbccfc394. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/BXG5G2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68e4a99582998cff10921559ff15240ce348c84decea70ac0ce28db57a6343a. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/BXG5G2500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800d9978773bc8cf175e60d1a74ecbae2cbfdfa238c1db56bbee6508101e7d8d. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/BXG5G2500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a848c7dd95a6488eeefadd10326caa6e53a2c9a37d57bb28c6e9d0222c5156d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BXG5G2500010.