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 0x5d1f8bfd385e7b3270edb0be1425781b2baa2516daffc2bf05a997577bd90717. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8876c1c6-ad49-4d27-a639-ea11cadfad84.json and https://artists.proofprofile.net/proofs/artist/8876c1c6-ad49-4d27-a639-ea11cadfad84.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570c659b87bae235cd5561610a20ff25cb81a273b9917515b6327777663509e8. 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/BXRTV2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba0c586fb75de9d253e0f2316693b2af28b47e539a15400090e7d42467bf52e. 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/BXRTV2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8408a049d5fc536a13125bd067890e528ea43cbccfa1c57e7ffd6e452db730. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BXRTV2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb745239f8a3c67eddb43bedc5b20bcebd3980d6a133e0c9bae820e3d6404c633. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BX9CA1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4bc100c26a213d13609028b17032776a71e373bade4bf21bd2518cd420b067. 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/BXRTV1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf071a09160e0a93904d9cc23bf654330d9ebf255b1beb01949fe16b9c6246478. 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/BXRTV1900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84dcb1808c97ad631d5689904dfee1aae1c34bfc825f8f9425e5f1a86e29aaa1. 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/BXRTV1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a95b4e83b27c496b303380ff4e1859c0481f09e4489b94898ffd9665b9c8c6. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BXRTV1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570c659b87bae235cd5561610a20ff25cb81a273b9917515b6327777663509e8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BXRTV2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8611d879cb0b2ee829b15371def8714804b594105ad06bb8fd8e407311503e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BXRTV2090000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83bbb7bc8732aa894603459f6189e4aca17f25a0cd541fed8aa8bb7bacc9b9ab. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BXRTV1500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b7b610f1fca57855fa5051fcbbb9554a21f67098d23cc8fb6eae321ddc12dd. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BXRTV1500024.
Fábricas de Cultura e Tratore Apresentam: Atalhos Sonoros 2018
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb22e3d00605f0bfc43446ecc7a18b5ece78a6796a8a433c479ad68df3e1a8bc. 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/BX8B42400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bfd0e87ee791bf87f15ca33b305d582d500579362db69f6dd92614d382797f3. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BX8B42300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7f9e63e8769fc96b1f44a7ec51d7825577ab3bca3555eff7c8cd161eea18a0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BX8B42400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc951ce1fb338633ca6a90d4ba8ffc70505107efebc67a7a22360593f1ac71578. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BX8B42400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480602fc8b5b69e53b7e01d1de04feb75f0275778e9129538cb1f4ca03b92c2e. 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/BX8B42400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed235b61a0f4945f1cda3579b165aef4e7b5681d5c4d005c88c6b3a15fcedd6. 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/BX8B42400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6429795857cd9db6afa9219eccfc7db81d7005033a66337b3ba187ea555044. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/BX8B42400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57689eaf1447315d2c251b527dd942c6fec34c272c30ceaccdb720f62a612a04. 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/BX8B42400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a3b11b87fd38ac324c94bd64627eaeb9fd9b114fc36f802e165cf1431773fa. 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/BX8B42400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7746a78a3028c7b5457a0aa4224e54b374e10b955e49dca6dd062d18d4ea5b. 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/BX2MX1900007.
Maremoto / São Paisagens, Nova Descobertas