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 0xbf754954c4a0e08e7d0aa6cc9868ed4a97e51f2e854b4956e40c76976eef8266. 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/24404b98-1e70-4a90-9d83-ee9905d632da.json and https://artists.proofprofile.net/proofs/artist/24404b98-1e70-4a90-9d83-ee9905d632da.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 0x1fbc1840e4087e8675207b192e1724b00ed3be2b7e44e0eb550e564c4e620b36. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BXWOW2300271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1e43706da84c77f34e1fdcd3aabc8cfb3c806f4d9c3384175732d750f2bc63. 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/BXWOW2300281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163fc1ba121e3e9c9b5a54aa66ec47d85e6e6bf21b9bcce243ca1cd84d02f99f. 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/BKPHS2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d0ee2689d023b2f0856d8116b5657e7b2e676a67f35fee119b7882d4ff9983. 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/BXWOW2300283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd476d436f66985d9ebc44a7dd79763d9518ca861a049c67404454f98f0baa78e. 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/BXWOW2300273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1f4a4ab007bcd0f733468b9357ec99b6880fc0ca6f39ed5e057a754387bdd6. 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/BXWOW2300089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b41a84768353b8ede8ed19fc5c47e14e4dec340d8f9bf0c01e487ad098aa7d. 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/BXWOW2200287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dab22c69d711136b234c28101770936f6f7968a51f9638ffeb8d69f54b950db. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:45:25Z), 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/BCTCW2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79439f5c159d6116e9380cd32f5702bacdd186bcf35c08ec083b713b0deb5c1. 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/BCTCW2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa561bef5038f6d4a25f020f2b55dcf1e8743f73e4b220174a909ac274027a54a. 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/BCTCW2200002.
Só Pensando em Você / Pecado de Amor - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18aaee1f2bc1edcd4b49e06710589b865d8324296d95b9e1b9c7ea8c82acb45. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/USX9P2057577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b4bf8d0b1af98c8215de27847d228c8491d0c2cc8fcaddcb95b4a0242fa3dc. 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/BC7WQ2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec7f5276f99262a8bdd28e09a5bfa2443bb6a173ce56899226e162c50df7958. 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/BXWOW2300363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d0ee2689d023b2f0856d8116b5657e7b2e676a67f35fee119b7882d4ff9983. 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/BXWOW2300283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8142146c6ce0166033fc848b2c20fca0c0a3fbd513b2914b5673d546c115a9b. 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/BXWOW2300275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3817e2985eac1db01128530dbb5454c2b25a47fbcdcb5cd6a175e08ada0a3a19. 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/BXWOW2300358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419bbde2b9a79f47d9698f27d2d4f2ac255d85a55cd121bc5ca257ec4285bee2. 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/BXWOW2300361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1e43706da84c77f34e1fdcd3aabc8cfb3c806f4d9c3384175732d750f2bc63. 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/BXWOW2300281.
Não Se Vá / Morango do Nordeste / Locutor (Ao Vivo)
Não Se Vá / Morango do Nordeste / Locutor - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0eca57eda438d67dc8fad1a3272e51bd42982220eb6a44c5757e120edf6e7f7. 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/US7VG2570159.
Sonhei Com Você / Liguei pra Dizer Que Te Amo / Na Hora do Adeus - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94963f3237c78040cdeb87864b79363e2a5741726a9683f59c3e04e5d79a6a12. 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/US7VG2570158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0eca57eda438d67dc8fad1a3272e51bd42982220eb6a44c5757e120edf6e7f7. 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/US7VG2570159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed2f56bba72ab8287373be997b43fc992b590b41c7672d2f32e435b781b6a19. 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/US7VG2570160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f77431591762e586fe033f2ca9c7f1955c8ec4ecf66c672e3badb8a4836d55. 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/BXWOW2400166.
Da moça que juro por Deus que ainda vai ter meu sobrenome
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e6f11366754a2a8d77157793814e3eddb45ab791a4df19533787ebc43aabf5. 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/BCVDD2400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df9dbf8578d6eecb81bb0c27b91f9eda00af1b097ea97b46111fbd72fc50f3a. 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/BRUM71602236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163fc1ba121e3e9c9b5a54aa66ec47d85e6e6bf21b9bcce243ca1cd84d02f99f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BKPHS2400004.