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 0x49c2ece12fceb01bdc80943f25481059430e18e74e8c89b3600d60cc09d1e3a8. 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/6f7ca142-3909-4801-8c04-e471f81b49a1.json and https://artists.proofprofile.net/proofs/artist/6f7ca142-3909-4801-8c04-e471f81b49a1.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 0xa89a109cf0f50886f92afa4641d7348fa1b2b6cab8e0317840f62190e8d3b753. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/BRAGL1800129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3813193e2cade10e7747c7f8f525e70a6474c0f30c3a7cf5fda5941f83ea3c20. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:52:50Z), 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/BRAGL1800124.
Saulo Duarte no Estúdio Showlivre (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52457c86018f9869083ddaf1c9b8a0f1b1e4e07be03d0895f076dde77a06237. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BRAGL2100058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb2be35ac5473c9ac13f150cc9b3bd1e335fa7c5ae142b64ef94cc57061c1f7. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-20T00:22:08Z), 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/BR4KX2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29c14fb395e62938ae9632af43c535005cb5766090ba14cd9a891db1cf44798. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:16:54Z), 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/BR4KX2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89789c4bb38e8c5ff83259aacef2ff6a6bc266ac009eb7b2c02461a8157dd789. 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/BR4KX2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa957f2947046850a59329da079dba84315a07dcf75cdca6aadc9f3902782f921. 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/BR4KX2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d836a71be548685223338a4f36721e263a8a0a58bc09a0c4c5d1c0b5b27f192. 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/BR4KX2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0c5c5267c1697b4c9b82f4fecd29bda1a1a0aa1fc31bb86f9a47976b4fffe1. 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/BR4KX2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89789c4bb38e8c5ff83259aacef2ff6a6bc266ac009eb7b2c02461a8157dd789. 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/BR4KX2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87d3c6b01177905382d5e35a77dab5f4b94de4e6412f50776c4aac8ccbeb79a. 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/BR4KX2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc671591e4209b41f1202d5f2041fb98f10f4be6f52dc66fe9cdcda1136fd1288. 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/BR4KX2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67656dd92b48377f1dfc3ee109075186cc7c4de88456d0edcd5b2c6c34581465. 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/BR4KX2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9acd3128506ea287bc9ad6f92edae09762aaac2147eb39f24d9f5f753ed807. 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/BR4KX2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3717a33a25136dc524c9ead2481d662a2d5764061cecfc9d00b56b94e0e268. 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/BR4KX2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a97dc1ca70889b7044283e86b9b4272b4428b79ea706435d3644de22196cde3. 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/BR4KX2400008.