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 0x0da236cd1a7a4b22e49508ae6c82db2916b2a4f2f4da6b2664d6f6254ebf7080. Chain 2 (Bitcoin): anchored in block 953707 (2026-06-14T23:22:21Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7e83c4cd-77b8-4746-9ae8-0bc2d217aff9.json and https://artists.proofprofile.net/proofs/artist/7e83c4cd-77b8-4746-9ae8-0bc2d217aff9.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 0xbf720abc8607bdbdb0ab151f69416fad34c6a360be6176ac2cac80b020b50ece. 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/AUMEV2312661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd1a88b700bd59ab90c744c955f47cf757079c997d6f299c44574a1622b75e4. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/BK4DA2321872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf5a21b71c417d0ce3fa431dec98668c1fae77aa574c6f3a68da2937b2c1df8. 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/ITF252000081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf788fdc33f8034faebe78c668aacb66a4da579e1172095f272b91fa3f730fc. 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/USUYG1590142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91027c5175078890468b43c11d4afe0caaf484b8b5361786044588a0304d25d. 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/USUYG1448661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6954eec463e9f928f4674e3371f4896db7945d7833ea20a7c7878a5893eac44. 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/USUYG1448231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97008fdc9d91dac4f038ed58b4f2193e3763e8b6e671782d980af3f6e0ef9ec. 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/USUYG1446446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138f5f4fd18324aed559d0ef6afe4827b4f434dc9064f05373ebdfd04f80e089. 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/BK4DA2321996.
Triangulo (feat. Lapiz Conciente, Yaga, Mackie, La Materialista, Lolo En El Microfono, Nejo, Sosa Gucci Prada, Monkey Black, Melymel, Shelow Shaq, Chyno Nyno, Maffio, El Fother, Nengo Flow, M
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d096715916c7e07f3198239c29d4a388beb029f1d648e05f9bb4991030cf76a. 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/QMBZ92025371.