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 0xc278720d046a21562943f2bef004ed64dd184100901ec5e6fdf802757887df7a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2e957a6a-02a8-4d0c-bdf0-1f251939b1b9.json and https://artists.proofprofile.net/proofs/artist/2e957a6a-02a8-4d0c-bdf0-1f251939b1b9.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 0x79f71698bf11a227a3f596e1c345f53d880bf4bf1b1ffc162cdb2301e4d30b92. 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/BXJ3W2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19abce5a936e37794383a6116d6a5e28dd12189537cf06e7aecb5d61546b0211. 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/BXJ3W2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13649bd32947b3d23ab9c0933443cf65d1fc327b4335e8f45d152be4056b62e8. 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/BXJ3W2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e56ae0163f44320795cf1b6a28409db4ee28f093e7595c778d15ce967f5161. 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/BXJ3W2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26f2fb46fc71f6f33183f62048f0a2d0480b96eefbc366a6ee3b0cfd3e08451. 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/BXJ3W2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5ed6e2b9f8fd0cad854cbfda0eb074a7effe17251383c06991ff33b137b20d. 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/BXJ3W2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a7edfeec6f6ee0697cd1439a5cbd7b4f3bbe596c5f4e6cf8f8b3c164506b3c. 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/BXJ3W2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ef21d8d1964ac9f2ff6f9707b7b2bfebbd2f0327e509e048f8ed28d58e0124. 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/BXJ3W2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b085af7d9880ca7c6a78a9afd8111d822aa3c30d177905f7af5808ac6082603. 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/BXJ3W2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7b022214e9ebcfe084c3a237ce299adccb31e513169c41ea493cc5787cb5ba. 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/BXJ3W2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ada3a4eacd90df0a0419af3608de134c2e03a5ef32f71deba173f91286d471. 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/BXJ3W2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37edc5cccabb8e57dcea5f084f2c2dadae2ca045d6b9a3dbdf700a66a33f9f96. 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/BXJ3W2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f71698bf11a227a3f596e1c345f53d880bf4bf1b1ffc162cdb2301e4d30b92. 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/BXJ3W2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30247b03a476c9238e0734c45e6e66cae0ef9a0a1eca3d05d5cce60009a1352. 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/BXJ3W2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1175ef6920087f276981d914dafa2b37aa89e00aa473f82554a01453e9dd04. 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/BXJ3W2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba28e4b5b47df60e522526885c4e3347a1a7df88d79a636a6e0c9afb12450c3. 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/BXJ3W2400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297d85cf853ebf523b800341128b792d5af46dffe9311d4257ab0e38debadef0. 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/BXFGZ1800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e40b106eed9005a9b78188a301e00414b08576af1b5290c4dc77b732bbe7f8. 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/BR5TG2400147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0bdad760360681234f2ec4d09dbe45b1eb28ce9b1341a58d46e6274ccda1d82. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/BRRGE2102529.
Galos e Cerâmicas: Uma Peça Sobre o Tempo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7b0c2e8b9c4066647784109e7aa55efdcd73cc478a8b6b871148e2197c1880. 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/BX1F60000030.