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 0x0e4d1999b2006950291214c0eba2f9400108c1643e9ab554b94a4a4c6f72c82a. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eed2dfc5-8560-4be4-8fdf-f1785d2336d7.json and https://artists.proofprofile.net/proofs/artist/eed2dfc5-8560-4be4-8fdf-f1785d2336d7.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 0x9013eb3a021269dcb2a44cfc5345c693d5c8f6d50e09e494cdda01183b6824e3. 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/NLD910700867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f551c384c9fd28ca8b933784ca11a874560de3431b5162785628a9f15e18e6d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NLD910200376.
Midnight House Vibes - Deep House Session, Vol. 25
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210f0d024dff40db67c971605b5f566b35e46e8f0a92847c5a8efc962a1e1551. 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/QZFYY1988630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33df2353a97e108eac2ea199b335b04e82e6d0cdb79c67c0f32abf0fac5dd417. 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/QZFYY1988631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e19ad464e482bb507c9c16e87e3c020c3bf63068254f463acc59ecadcaaaeb. 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/QZFYY1988622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63405ff6661f84ba419aa27eabe69a008c81aafdcbed3bcff809ca8d9be104e7. 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/QZFYY1988624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b6b5f0575df624356e9496009155d6a7c7e48b70c19d86bf99961a95d0d701. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZFYY1988628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffba57b37e096e1a7b571f121c3f749ff68b07772bd4d92cc971c352c1cbf486. 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/NLD910200375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f551c384c9fd28ca8b933784ca11a874560de3431b5162785628a9f15e18e6d. 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/NLD910200376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4f7e437cbb676c1f6d8a2ac6d35a862df14d42071e8814159dc6e9565b91a8. 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/DEW871402135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fca44bdd9d85081cd4844a4fbb35ef704a74e0da7ab777a5a538843418ce2ce. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEW871402136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99683c0a27f5304427297673848db477f6643eef743069998878df60cde62d9f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAFF2079798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60890bdd855b998ede9d6c5d6fcc15626b1ec57487168b6a6b046d80e12b5374. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NLD910200411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25edee5b2efd0fa9af5420e44c25ad911ef7c67060023f7375793be56ecd59b0. 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/NLD910100454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634dbb3f06ba2977030f88ee361a742b162c682557cf14a6fdad00a7bf368a3b. 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/NLD910000375.
Hellraider, The Second Level - To Hell And Back
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436c60fdd00e590761b6f463778df506dad1c84258665d79c80379039ace95e9. 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/INN242109864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6991867da95e7b86d25789cbe83dbd3569333c59e3c3834838d5884ada2b0e. 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/DEW871604131.
Girls Love House - House Collection, Vol. 20
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d2ea2289541044bf269355245605262b6194d2422bfe79cf6458775e68d552. 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/QZJG51975752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7846820062fecddeccb21547704bfdac2f552dd03d355e936759f9280a9c2050. 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/QZJG51975753.