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 0x77ae9055849132b76cc5e048b14825f09d6dc8c1f24d6013f934aee706d74665. 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/8f028536-e463-4045-ad75-588b59633187.json and https://artists.proofprofile.net/proofs/artist/8f028536-e463-4045-ad75-588b59633187.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 0xebc0c8f313d6e2dabaf996c8a331a93c9e99f2fc04c757e592ba48fa38beb9fd. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZHZ32078104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d14b24c7586bf6e4c344d4d014f37d3b9553472514c0a97e9320af379f8cff0. 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/QZGLM2145006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea2c434c930c4471cfdfd3a54dce98d09f344ec6f6c71e144d73fbce25d1165. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHZ42184160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aaaf58d8a73b32afa9a1829681330ee7f81d49ffebe043045095f55e109535a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNJY2149545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8809cd78d04c499797ef98aa67386df101b4e86df4ad9fb2bd7fe33d5372a6. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZNJY2149547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb61a9c06d46a26ebe799943b1c792d89b09eb9c8e5869eef47fa3e6e599c22. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:38:48Z), 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/QZNJY2149548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832227edf5ec0dc75b60a1c47ebe9bc4ae8e7ba3fbac66d02ba9097fffe6a839. 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/QZNJY2149549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac30e25441663a4a88a1532cf50cd60b076bf754432cd701db251ad9a36d7cf. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:04:21Z), 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/QZTVM2124829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63fdddfee3951a5b601d47cd159365f573c819371422720db00abccb5dfec2e5. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:47:29Z), 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/QZW9N2208983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a5d7d882f2c1760bacf4b921078a1a593259a560452b58b8a51fc9db11ba5b. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZW9N2247919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633c4fab815abef5c732d541c934491b70c33548acd7ac936801c858cebebc59. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZTPX2381423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0256c8925b2d76e6b66e30f4ddc851574bc4f3e9023cc5bdd46f22a7c96946b8. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZTVM2370240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07cfe61dedb318c8a250d2b3b34ca57c3ecf3dfd79b289802a6558518f5d386d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GXBAV2507553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44957e7921e7b70b863c711c60f7f7b94fb2ba963f3708174aff1883a7c01581. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GXBAV2530936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765689f392a04913ec4d2f264f0ee0541f637e091e7acbdfd3b9b42a775a2b12. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/GXD7V2599959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0afe8c6c0e3e217ade6b9a82ddb892aef90da6cf6b9f5b543677188baba8cb42. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GXD7V2510932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b59f6de27604bc1e797b9157d2ba136282a297a4c902b959b999f26e78cbca4. 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/GXD7V2561386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8de6f23f4e396d49280f3254fb904faf6269d8b60a510976c5cc15f22a9c000. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/GXD7V2543877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa2d76f8555959599155c553be00c710bfa3b0b0262e5547f1d301446afb5734. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GXD7V2577375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a4cfe14561f4066b1d93598b30e042425da682158dfc5b52a9d6573f0d5dc5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QT5M52596102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e71147d91f28b6a245b9b3afa49a7300241fd2e2b143eac4be1eb9df9f5216. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QT5M52505864.