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 0xf682caa4f8103fc3edd86573234ac8f326e6947186581341761419c16b2279c6. 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/53bbc61e-287e-4d26-bebd-50ef25a7fb9e.json and https://artists.proofprofile.net/proofs/artist/53bbc61e-287e-4d26-bebd-50ef25a7fb9e.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 0x0423a51f85a3c1697489dcdd318727281cf5ad1799c09870ca93930024927c3c. 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/QZNJZ2408511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43b603d8deb52834df50bb1b69dfecf10f67792b4d09b1230d115e69b09e6da. 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/QZNJX2421208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f31bebcc4cde32049b95d105b7c5a5b19d9f75e965a6051ec2e2f95a73456d6. 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/QZGLS2453014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac15322453b21a100cfa66ca4d7fa681169929c9d3907e33001799add76b71b. 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/BX0MP2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40492cfd1606d2cc89584188cfe9e2aa1a46b957f29bf1b74bad3476b88523e5. 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/US7VG2458242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22efb0f864098ab77bea8fcc0aceac462b2bd94dbda9e20f78d79543155cab2. 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/US7VG2404033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0a744ff7039e6edf3991cdd5c9677f214cc2ee3b98f614f73187ee59232a5a. 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/BXBXH2300391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ab825deed5bb9eb995ec7ef0616c605b7bf9e6b3d9a02ed509d5ac7ad358be. 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/QZTPX2361428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11677016cebb087f34c7707f5029d223f3e845f8cf5bf2f7bae20950acdf145. 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/QZGLM2390165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e5b67cbbb3836e2f02fadef96d03802bd42adc9cc4cbce9d0d0180a89bdc3d. 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/QZGLS2366846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b1a1bfe81f778cc9fff16ae65dc04772e850784ffda18b3b59258263936c57. 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/QZTVM2232397.
Cypherfunk dos 13 (feat. Mau Criado & NB Emici)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11c7b7066572ab1f33e626bfc1fe82b3606d0d00ba835f0a2a46767c11c3cd1. 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/BXIV82203093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315a6e5d3c3e13f7c846c2d334c74c798b9278ef60d1f9e830c10917c87f2fcb. 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/QZGLS2284230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6713c87391a16d92ecb3780d1f51e260cd879b1a602ab6d1757a6a4102a4d3c. 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/QZTPX2185227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0731e830ec4e608b16d8da66a90ed810d03660831e4494e7943d7c4504c9d1b7. 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/QZHZ52122460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0941b9f05a923b6d457640b68acb7bac47754757618e4f2d3995d4acecf62fc. 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/QZHZ62027218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55db5fd4af5b96a19847c7bf93cb0cd84bf72be7601d738baa7c65e62799fbb. 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/QZHZ42023058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1264301f23febc3cf6880332fc8ba41402bec1321ede0ab0591c4521f68aafea. 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/US7VG2092481.