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 0x56e879501c19fda980ed558cf13937ba558aa2938198a6a8f3e38e60d44522bc. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3ad6a643-3f14-491b-bdb3-9498a2ad29c5.json and https://artists.proofprofile.net/proofs/artist/3ad6a643-3f14-491b-bdb3-9498a2ad29c5.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 0xbf436b889e839325363507cf1a8ed5ac3df3b540f724d8154e8d661b96238fc0. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR59R1669973.
Naghmat Elmilad, Vol. 2 (Christmas Songs)
Lamma Ra'any, Vol. 4 (Arabic Christian Hymns)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc62dd6cadbbc63cd2839bc0c293e45518b5307632216a4f81eddc615e7a611. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/FR10S1636536.
Lamma Ra'any, Vol. 1 (Arabic Christian Hymns)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bcd28bf8cd0ecfeef6bc1f838564f271ea03d688e2128f6405f58e62fec3061. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR2X41571769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fbc8440c65f543bdf2530adea1920962423fad4ff19291b5821ceed7d89af3. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FR2X41571774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2fc86acc4cd4e651166529cd65004a6b8274574dd44fdcde67752efd76d76b1. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/FR2X41571775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7dd7bfa977c67752d7f76eb3d894323e30902f3614b9df32c32ee4ebd9333b2. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/FR2X41571776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97302d94e0337cddab2580987bc30a7216e65f0cd71ccd89a459e59df27692d9. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FR59R1697627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b9d32214ba0f50910cccdd7c0fa989be508974d13f1af73d6843c8649c9dec. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:45:26Z), 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/FR59R1683621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c97012ac95e7a600ce6648bbb5fee68ce73d0c7d16e29c5a01c806fde13a9f. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:49:46Z), 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/FR59R1683622.
Naghamat EL Milad, Vol. 1 (Christmas songs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c630ca1590c65652fcca678d48b54226dc511e552dd1631e968eded16d83ce8. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:29:20Z), 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/FRX201663540.
Lamma Ra'any, Vol. 3 (Arabic Christian Hymns)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd537e5ff74b940a10b734d3989a6f0db81554f044d5a1fecfd0fe77e02dc3318. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/FR2X41556937.
Lamma Ra'any, Vol. 2 (Arabic Christian Hymns)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7258988a92cd8ebf653aa6977fb5f32d8441ade6161f5f98cc2b74378defd415. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FR59R1672408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741d77aad5088878249b9cdc12a89432e9d8fed05e6a87cf7553d86d5623ed37. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/FR59R1672456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4227653793c9bb72400229a8a28fddd4ba9ab8da392177b5270dd629690a3084. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FR59R1640249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6ef7029a95884e24d9090e07158c2e8e2586bd08962b7a63c3b471534d4004. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR59R1640254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf764e8049c1b1f877e7a06b3b4748b05d6cf445816d8ef0165210cc7eea3eae8. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/FR59R1640256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b2676a9e1ac4b2755add527aa8991ebf086e57dc236633dfb57cef6dc3a2c8. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR10S1981105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe113d283f0c19a8f01350c6c641bc03f0b4e285a50f79f858fd7a0bafb10baeb. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR10S1981113.