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 0x44eaff28941986fd2596d12f3f1de118c9b8d89c77a09397c3cf9b6e9eed7473. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1d37a4b3-708f-49bf-ad75-dc97131f43d4.json and https://artists.proofprofile.net/proofs/artist/1d37a4b3-708f-49bf-ad75-dc97131f43d4.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 0x4efdb05e68f8323493c09cfab6614ed8ad7acf9cad7f5ba449a0c9bdc7af7a04. 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/QZYFZ2480055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a540fd2375972dd51cff1bbd2e947fe339f506e057483f3ee917e894119b369. 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/QZN882421935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9675db0794ad57b190aa40492d1d2316ea2ba68363f4a0bdc5a956e6d771fb8. 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/QZWFW2488777.
La DT (feat. FineSound Music & Mauro Dembow)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbefb95ee55ef7b96439b293bb149b6f9500bb89fe5f6510cbc4e2e8c2183e692. 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/QZTAU2492834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07af3a1b60b61890b6edb966f8d0dc7a9294302c833d48bede0b5feb12adfb12. 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/COAF42494995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31f087ab34080fa9813f8b682852e7b1694258c437ab2e2e1a82989113cd6eb. 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/QZDA82422018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5fa63d78157cc8c312e7397a4524d732e47b3c1100e8a87daebd2502f43c92. 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/QZTVM2318212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0192ddcb8cb02aa7755a715ed1d0ee3417aff1a5062a3101939692e903a1ee5e. 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/QZNJV2331147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e68cf6a14f6f4d0440dcc6cd80c2247f484d9a105ecb506c81ca62b6160a55. 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/QZTBF2459905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5078682d9892ab4b2bc5856bc5a0db0dd33c6ff8f8a5bc979937d9a0e462ed. 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/QZNJY2353842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5451182505786c1831079bdc3ec487526cdc770b5c5c043987b8dfb269a01ebb. 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/QZZ662306793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a4ab258021fdfd6a7edfd1c5f67580c1d850a66f15c2fcca6feeea06c952d6. 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/QZWDW2501052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31f087ab34080fa9813f8b682852e7b1694258c437ab2e2e1a82989113cd6eb. 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/QZDA82422018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0192ddcb8cb02aa7755a715ed1d0ee3417aff1a5062a3101939692e903a1ee5e. 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/QZNJV2331147.