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 0x684907bf1dcca288bd144594fc199518376086bc1993583260b59400ee7e1bc7. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6d33243c-030d-410b-9639-af514d8a609e.json and https://artists.proofprofile.net/proofs/artist/6d33243c-030d-410b-9639-af514d8a609e.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 0x60210d0c9356edaec4f832ca6a11e148119dfb9b9c16dce81480bc54a4f688b2. 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/BRACT0700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9d81b2fca1caf7f7544c5b8a184bd14a3b9e0dfe911f78b312cba719df2f04. 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/BRUSA0500029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0191dfe82c6effeabccd5f764375040b1fb37a4e1127eb9d57cec858867b07. 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/BRUSA0600550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977f5b846f408b996396f238a301cce2f987be2ba7ff74fa748e63645e177a3f. 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/BRACT1000072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57211e155a8a7d60ead75263b1d9f42efaaf886bd892b37e8d4ae49bcfc4d8fe. 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/BRH5H0900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d76edd6653ef3002fe5f2481331be034e9af6212d6d5d2a8971f0b8555de90. 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/BRUSA7800367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e8daaba8574983f59dc797511ae6154824c106c4f77bcb91707c78c8a69a70. 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/BRUSA0402323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6958a8ac09a455cd33a8790a7bb8f48f982dee6e70bf5890aae1859f36b4392a. 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/BRUSA0402320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4632e74c51770d23cef775313ebe100377e087c009c43ee000eb8b4cbbb2c838. 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/BRUSA1700204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81efbd271f5ff1bac3856ab62a8b1b5fc5446c2a4ab8b407c5d398b1b8c2f29. 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/BRUSA1901905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef0a04465e5e7b1e5a9327b0f28461fcc3192394c72e522ec0b29f3fdc13b5b. 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/BRUSA1901906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8852dbc550d0d9d7274fdfe37c3df691cd9c81640493cfe94be6f6fa8ef5ef11. 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/BRUSA1901910.
Barraca e Fronteira / Vai Embora Tristeza / Súplica de um Gaúcho
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe442cc8ed390134a0b7a4624e6083b0a3393cf239b3fd37270cbadcd6df7ee. 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/BRUSA1901915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf65c2858df9fa0214eaa96c081d796ae226ec0d775ee2813d4f548d5fea85b. 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/BRUSA1901916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb1647defc57a1c8646ac1f905032fd241e8af3e6dfe3b40f9186c44607ed92. 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/BRUSA1901918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6979f46a3b08ff6050bb22e415886077f2aa3a4b528b207baf084f2e7bfad0c. 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/BRUSA0401530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7780d7c56e83e83760bcb025fae67495e3237c8295d76b0fcd080891d27f6186. 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/BRUSA1700137.
Barranca & Fronteira / Vai Embora Tristeza / Súplica de um Gaúcho
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaec634fc7629d27fc29c630cd81295ffd0acb6c3336c75148c2965e59f797d6. 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/BRUSA1700140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8661d737e8b7788b36c79f97f312ff94e510158e3639192280422cedb38be21d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRUSA0401367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096dfe5561bb71ad37e3b41a16b315941ee03116b8d8cd9e01331835a677e284. 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/BRUSA1700197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7f41fdc697c2eaf25d3d66507d0d9cbbfbc8faad9a5d4b3941a84b1c90ce1a. 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/BRUSA1700199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6958a8ac09a455cd33a8790a7bb8f48f982dee6e70bf5890aae1859f36b4392a. 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/BRUSA0402320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4838b2267dfe36e52b72c3130ea4d433587f59f2bbd3c4324b782bc710530612. 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/BRUSA0700933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4632e74c51770d23cef775313ebe100377e087c009c43ee000eb8b4cbbb2c838. 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/BRUSA1700204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3110effa8150523cf2e2deac0186eb1bb6a65ecffcb9d2e94667bbf1a0b0197. 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/BRUSA1700205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf054ed3280086e5d8d4fe46098fb530259ee41580bbbdd85aff90218de5ae160. 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/BRUSA0900122.
As Pérolas da Nativa FM: Santa Marìa e Alegrete
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb050bde0258723053b2b25721ab1a545c5933491647d68412ce2f09af0fc2bca. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/BRUSA1701197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920a1690cb4c086dcdd7d20b9cbe07517b749e5a363205a60c4267142729cd14. 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/BRUSA0800122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30fe3c142ae47895e62889e398255c2a4522a0632012ca0f8da733ac2a5940d1. 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/BRUSA0401500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4888dd8657f6d1a9f00c7aa278f9578776f2a4d99c78b1005b5df3d3a8f89d1c. 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/BRUSA1701625.