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 0xdb24a1f3a7290931fab5f6c4a385124aa2b4c2855e6f278db4edcd4d87ef9b84. 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/f22874cd-0c74-4a70-ad7e-6dd71d72bacb.json and https://artists.proofprofile.net/proofs/artist/f22874cd-0c74-4a70-ad7e-6dd71d72bacb.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 0x65bdd108121a24575fb9d2526be2172424be4658618521cdd1c16f6b0792b503. 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/DGA062442790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f04a89ae4951338b104a583be2b6301831774288d1ef1bb4bddfa2ed3538290. 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/DGA062410643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd6153f66e1d6607287de456bfa39ffde6c2273c8763525e9213fb72c57b740. 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/DGA052435616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09a7634e1717a9b4e6b9337427feb01854593528b0b24f3aa102039d4ae6d0f. 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/FRX452493506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8986cf544471229919488ea26957e4f1eb29d4019296b12a93b182073e49481d. 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/FR96X2485514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e34cbd1c64749857bf2799505341ba2e2bf893ed291b43000965e9686cdfa9. 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/FR59R2451031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11c3192a7c517b91ea993369739d906c0ce775380cff40e6cc2fe1adbefdf26. 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/FR10S2464742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef76e8ab9a99f5cd49187df0482f55f2cb3b0edff093c0d8460088e3809e4a0. 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/FR59R2427466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11c3192a7c517b91ea993369739d906c0ce775380cff40e6cc2fe1adbefdf26. 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/FR10S2464742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196b1dbd2b42e515a682e5d2acebc9c82adb4000993dc1253c249bc34d267afc. 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/GB8KE2303801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b00c7f7a81665549b687a16fd70a40b4f18eadc808470bc793f012f66fc9c66. 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/FR10S2328340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb796eb276fd77b78b0d3f994b6bf7465ae3b9943817eb3da38512996d2167bb7. 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/GB8KE2206093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52a6cb475ca6152b959afd9c0ec7e4ac911c792747307c4e8c32c50fba52b0b. 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/FRX202232958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2dd2537f8070ae0dbd8a777843c1167e65c214c422244a67a33351d7392d659. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T23:23:49Z), 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/FRX202232957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe802df20b906366a9e161806adc8f4fd7ead224b3413396c1937ae07761968f2. 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/GB8KE2205274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e86edb57e59bbc74c1a755ccdbbd62dc9585f5a33cf8f2722132d8516e1605f. 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/GB8KE2204100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230e2d2b1be2662670fdc405f89585e06f927c3ba32649928cda0428c18e1fed. 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/FR59R2275099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20dc14e41f150497763c74135a4213137f6a4558ce9feec64ed814fdca0ea93b. 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/FRX762188595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8fa92a2201fa54d20391fb57bd96194a25d780fdc82f711e8c9b92f26b3092f. 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/GB8KE2150973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c05af510e23b46ab4140dc2f4d2d2de78a6ef9f59ccfb8f1621cee3892fe40. 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/DGA0P2421655.