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 0xd9631be769dd1d0bc6457ce5c2365a16c7ecd65f8d6ced7ebc45b9e5b7d0bdf5. 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/0bbba69d-be2b-4711-9d1b-ebd9338b0822.json and https://artists.proofprofile.net/proofs/artist/0bbba69d-be2b-4711-9d1b-ebd9338b0822.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 0xdb95a49b320ff40a9424d03281a440541dc8c31d5d460c6635d76996a4a5d4c6. 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/QZNWX2488475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72cb0f34cddc037fb1ba36863c135ec7a43f9850e713118340574e963adee9b0. 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/QZNWX2488476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697b3d0faca5e4b505081fe3aac5f0db3631f4f7dac86f23fad4ed4ea51e659f. 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/QZNWX2488477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f056b19387633a0c974c45cccfe1abfa3847cf77aff817e42181c712fa7e492. 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/QZNWX2488478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8a60c9523c43e157f198fcb5bb2429ad3ca0bdd3088ff01b36f1f3c6ecd862. 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/QZNWX2488479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999471f8f08815749fc5ebfee906dfa51a70910f0eb02803ce6f8fb885c6bc2d. 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/QZNWX2488480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864ca22e6d55224afa7b0ef6900bcab7b8b08bc47f3866592f2a0485ef8a2240. 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/QZNWX2488481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411a636b019eaaec60f34dd45fdf5201888e175d37dddc45cb6aaded72f26fb1. 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/QZK6N2281054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb934991ac25346d343551e5f1bba4ce5d7733f41d87f43e2bb318586959c76c4. 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/QZNWX2488482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f8ca9d254efb82371f4c91e048fc135a1fd32cbc8c6661f4725a29bf7d9d0a. 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/QZNWX2488483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabac0a7cafc4876a41167b99eda591bcd3979ce8a52de78eea58db6ae3caac46. 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/QZNWX2488484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3324e2a42a5b8814baa83c69da37c013d69a0290fbbfbe5cc264144ee315d2. 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/QZNWX2488485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e15a5f6710c2986c5699676837ebb3de7db226fe53566b0079fd69b882fc8e0. 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/QZNWX2488486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0d340044a5d746a54e8754d6455fdb55636e49a760462e1731dcb04b9fabfd. 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/QZNWX2488487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0e0ee5de53504dc0ce1367c945d3227dd138be05b3c048456a6d1b38778bce. 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/QZTBA2240728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3588ecfd391c29db6df410aeb42b4d0961a408dadeec43c2420676a9d67b3cd7. 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/QZNWX2488488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f309e006f531a3ffacfb64bb9b261a0f4e10cc3171d27ef8116b4c8ee61d7c. 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/QZZ7K2494313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd573d14b720c498a94c65cd05fc301ef8e9e67f6fdfa984206c2017bae707e48. 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/QZWFN2387338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa133343fa7e9ffcce5401dad09f2be5d9bbd9d536ee2b32075e93f4ab1ed3fb3. 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/QZHN92351017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0e0ee5de53504dc0ce1367c945d3227dd138be05b3c048456a6d1b38778bce. 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/QZTBA2240728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f27e980b0e038dfd18fc518f6296441178d6cf65313730bc70c3d958aee18b. 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/QZNWZ2251919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411a636b019eaaec60f34dd45fdf5201888e175d37dddc45cb6aaded72f26fb1. 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/QZK6N2281054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb993b8ed0d0878caac38154e895cdec367721c2c4593999d043ce0effcc2a34. 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/QZHZ42235433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd592d7030ca3e19db8fba0a19b063f4d3f2a83d9e13074741355b3ddf9e440ea. 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/QZTVM2154525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dbb3890114b5c8cfe5a4d316992674bf73a62d3007ab5a1727cd08efe770790. 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/QZTVM2154401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85ade222b93fb1e92e769a8abf24afaf8ca44072eceecee6658d5c7d106810e. 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/USDY42169556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd595d01854ddb0f1ab622259554c756553763825548736bb0196bce94c6fd2d9. 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/USX9P2092341.