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 0xb74dab34636a999692cb71c649c928509bc5f50f6c255ff7dc1eccf28a6446f7. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ab751dbb-3fcd-4aae-a3b0-63673d368f5e.json and https://artists.proofprofile.net/proofs/artist/ab751dbb-3fcd-4aae-a3b0-63673d368f5e.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 0xe337b3ae88f3165127291682208694b2b1696f0385bf5c68ae6d990d1c3789a1. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QMSNZ1306496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463894126db6ece2f2af1ddb04590a9cb04961e2cb4da9cc201e94294f01252d. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:57:14Z), 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/CA5KR1826096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7c41d00ba496d4f32d6a3d8b50205ecf21a7bf85ec5e74ae467427d6426b5f. 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/NLCK41078430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad503d673e4edc59c2bf7b552819b714094ae2a490c607cfbdad3226a026b1a. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/NLCK41078428.
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 0xb99951beaf9400dfa073620a65e235b23b651a04a0a57433f6f3c9101947f656. 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/CA5KR2131114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9456f62a3c203e0d30d5d2e0049a400ab8155016157d93d8ba264b24bfe0915a. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/CA5KR2131116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28903049062cf010df2e65e36bd9448780ed9100d05f7f50be8dd464f689838. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:36:16Z), 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/GBJAJ2200708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7145f99c06bef1130a8ee6e43285a69c03f5a1b6ae95cbf294d3a7fbfd34e8. 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/GBKQU2354922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b13de892dd08f3fd1c405b2d97198d15be66563af01716c664097f858567ff5. 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/CA5KR2479873.
Pikante - Harvy Valencia, Mrodriguez Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b64713f051ec6874b7a000a5cab611f727776b349bca9ca3b4276d1a45cde3. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZG2X2405595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b31994b1b179da7f283706e0fde9d6a874624c1044f9be36f3f73e4be78d69. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/GBKQU2523444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e4e469274de44a356847984b9cab4b99214cf28071741649ca1445681de560. 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/GXBAV2126628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057fc50c72da0c603cffa5de4c58845da163d96e82a17477edfe86b63d86d22e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QT5M22506944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206c51c25fe9ceb1ab710e4835e5dbc75805e81084094e9f32bf3312bde8a270. 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/GBHAD1801352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0890acdd0c3f367a46b5785a8d12ff03556d4ae7eeef84ae28404aba2381a9. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/ITA061302153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4177f18c1cb4790821f4c6ac3002379165c72ea866c649e3e7033b7e15a9a19. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/ITBHZ1501031.