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 0x1afa77fe7546c2d447e8c7719b74d7cb286f32028675b34372150efebf16ca8b. 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/c6dbaf1c-da0e-494e-b7ab-bb8f536f140d.json and https://artists.proofprofile.net/proofs/artist/c6dbaf1c-da0e-494e-b7ab-bb8f536f140d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Francotirador Edition - Back To The Underground
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 0x2eae8e71badecaa5af483d49a683125c549c71fb2a081f1605c27b0a39420aab. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QMU3G1300085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb1a97d9cb94d22c6927079fe3283d0cfc6007d71af2fb09282f0deab1cad08. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QMU3G1300088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34bcb72339c7db09170dc031780321af573d5f8b2b7924c99b1e63c4973b74c3. 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/MXD782100829.
Nico Canada Presenta A lo Under, Vol. 1 Perreo Perreo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4c46d12ddce4ed618554568d188a5f5f8b2b1007f2ec40d132cc377f5797c8. 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/US9PJ1200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef7486752a3b09ddedacfa7c90202e80d3e983bb98fc1f0485564edddcbff1a. 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/USJE62001168.
Gargolas 2: El Nuevo Comando Segundo Ataque
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8159284752a9ba6a5879b9d740b45381f52047046f8f9a54dc64d5a71b8f84d. 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/QM4TW2029491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74521d04ab0ec503b68dd76e8ed94e25dad1e4cf8d397a5345736e032ceae643. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USDHM1011299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4527614204b2bdcefc7f2ac3a58a1a145e1efa5dcbdd736b1d13ff42c4436ade. 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/USDHM1011301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04804cb0f2c8b21e32e4a107689bf2484ba5f8b8f4a3d169a0aac07608090e7. 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/USDHM1100064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac4cb00062a09fd26f4fead7991ecb245c7e5b1e9c8e377932aacb3752c4271. 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/USDHM1100065.
El de las Manos Magicas: Underground Edition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14912091ce11439de73c8702282573a550de149616a22ae1a27afd10d674c3f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/US7VG1930592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660e6388e99e58237daf3a29fca85d1dd3142a6980dc7197edba9ae997dafc7f. 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/USB271600180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce55e17d8ec61efe0dc223509301235e68b090e935a67cbe31bbd9ddf94fd9c. 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/GBKPL2027989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f96cacf9912c19aa4270866704accff512814f28912708f302708077a52aae. 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/USDHM1011422.
Playero Greatest Hits Street Mix, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa749dbd2b4612f9b7946ad7bdf3a77a518479c2daf5dc533ac8e2caffd9f9695. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USDHM1102768.
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 0x0ec5d3b9fb99f422f0b689796d462f903ac84bb15ac3935320b870c439b4d7cf. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/USJE60710283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a2c25dbfb37fb5c8f220d18ea331652b68cdab75398ab0e23f7ed5ce3de7f3. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TCAEJ1984356.