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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae24d3e438586f13444d0a847321bd392c50ff6f0e0cbeda935f3979cbb4383. Chain 2 (Bitcoin): anchored in block 953754 (2026-06-15T06:45:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ad70ebd4-7108-4f94-bc94-81accf8358dc.json and https://artists.proofprofile.net/proofs/artist/ad70ebd4-7108-4f94-bc94-81accf8358dc.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8fd976f3725897270868dedc981f121a38ee110457f41a293e0c883cc0cf4a. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZNC62102653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab984ecbcda2a0da2eb241905f9557cf04d806dbda0b1af87ef4e4282ae8fd7. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QZNC62102657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216557bd269b570dc579a5531e4d548aacf1c161f13ba57fd667e6d9a7a207b7. 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/QZNC62102659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc171272ce4ffe30bc26812c6311ac0ec8479f8168a80d9b96caf1a02e2b7f11b. 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/USDHM1321937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1e967db2767cea8ea38a02e5d2e5ccccd071f8ea98f980bba16d0a142b842b. 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/USDHM1321939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab8b41cedae88a7086fab6c330a46fe1a358365ce5b98e5cba7c738a234aa745. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/USDHM1321940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cfc02a66668c15f8402c276ff314b65ae31fdc9c8530f486bd1db83e43fc1d3. 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/USDHM1321942.
Gánster de Dios 2 (El Llamado de los 12)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9deb20fc740eba3c1de74953243208526b64e6e666efdea2112b9acd94e27eb6. 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/USDHM1321946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f44a66c0397f1c96d69ee755931fe954495543b10c6683afee172a749a99f1d. 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/USDHM1321948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b63f1fa68305b23ddd8b2107b560eccce961079ed5ed327ac2c55caefade88a. 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/GBWUL2149249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b0062b1c1ca30347e1aa91c4a6de58d121be8017420f999e4d6db6f8ded903. 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/GBWUL2102204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1096a19f192b13d5279860c268ae67f6333d624cd7f856036636fbc649f8ce79. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/USLZJ2291519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4888e363f0784431508f4bedecf91cbe2b6f253dd3226a6f074794858989e3. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZWDE2255504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706a37c9cc53376a04dff8c77b9fdf6d7cdc9b4267fa9b08ca4b81a6a95e4bea. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/QZNJZ2326039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe669968aa93095c4febb724cdac2357acff574f3ac0f9f1dc91a39a6d3623ce. 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/QZGLM2497580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f51d0ab35b0d7ee014834242c91aed79c4774ce40bbcb416627246e3c2de6c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZTVM2461074.