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 0x9a757f5d39b0b8515327ca0e3f69320a0bc2d698f57b28173c6a4c34828d992b. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c5d6cdc2-b935-4cff-b85e-f38a6146c1d6.json and https://artists.proofprofile.net/proofs/artist/c5d6cdc2-b935-4cff-b85e-f38a6146c1d6.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 0xf3c51c4b22f89436a2ef1685cbd69c7a9466c28198d400fe2c0ecf58cbe9fd0d. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZNWR2268698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce24f7165a089a285c08b8bad7042d426e5d32ab34fecd7e9c991ebdb763a413. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZDA52316905.
El Sonido Más Lírico y Romántico del Oriente
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe401e97fe5b176658076040c2412abad2ce44589ce1e3a359b38ab685e190865. 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/QZNWZ2415019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a78b406ae9d63b4e7170d5f5442210e4be114bc8ab955d0689aae53ea48a484. 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/QZWFJ2424661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3586532cdd13b483dd0ab144429ad834e6b4d1eceb9ed6297aa86705e1319dae. 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/QZWFJ2424663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbac33a92328a2585d072ed8bc8d1a819b37a8e53cdccd327738a9bed755d119. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZWFJ2424662.
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 0x603d3a7ea1b5c2a53da7dd682152f6e47d21f04fa521da663c0e93f977f8211a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZZ7R2452439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af4558f38cd5b20842715289d0aabd2c811ccff2f9fbe4e4bc8c96afe6bf5a9. 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/QZZ7V2437204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea8ae43bd66e5d72224531a51e5e02ddbbc678ac1b909e363f1f7489a52b4d0. 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/QZZ7V2437206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08171ab2459f556c79a1539d6ec92674cf6d7345c1a95f480ae5082fea2e3ded. 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/QZZ7V2437207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f302aa52f6042edc49a7f7f22a76b4ce76efd8efdd77bf3871e8d602cafab0a. 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/QZZ7V2437209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac03b23e15e91e8b0368331938621386a5dbff999e0a71055cc2101ccc23e390. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZZ7V2437201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150642bf8f3f28c8b3f2a8550883d14f34c6374c0670c6f3468dc2b2d777c811. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/QZZ7V2437202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce24f9bcda7a09dc6fc309069fa5e04fb88517cf5ca97842cb9280efc37c303f. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZZ7V2437203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5196ae6ac41a83f2af73bcff0d7166368791c276273ccf7c21d72992f19ada8. 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/QZTAY2231399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5a05d6f470737338aa26f30f84cee40a091a42ce4e2784981560a1ced7b431. 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/QZTAY2231391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42545488bbe72bc8d931930d3ccd34462a06ed4d0113973c4b0083fcaa8a6db0. 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/QZTBF2427584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf972bf035c5f58f84be0d1af7c06543bd5f9cb5f4ecf1e00dd4759bbab280ba. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/QZTAY2231394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1370e80c5b3dec7b1904182cf5349974509bbb289c0ea546a75abeb611322051. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/QZTB42215376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc33a9111493a094abf41664a2d13c03b33032f2b48c9348cd98f9a82156544a. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZZ782448088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f40acb2702ddf6b791e0584fc33e576ebb4832b89a8fc4462500e8900f8a5c. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/QZPLS2439078.