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 0x26485170aa1b5f71e8681d30e938bfeeb82d8029fe7a73c014fad98ed5e4a378. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cf7bde13-8299-43e0-ac81-3afc2292ad9c.json and https://artists.proofprofile.net/proofs/artist/cf7bde13-8299-43e0-ac81-3afc2292ad9c.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 0x488c0c11c9828b9b460efe54394afc214e5b927cd419ddb2bef7367ce02e28bb. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZNJW2466294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0aeedf9a62ac97602fcac5c9bc4d9a841b9c5e8a60363c934e3d79ffa786a9. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:41:23Z), 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/QZNJY2459122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b68c91cdef3edbf25f9153012e3e6a1b04c927a97c995631965e9887d11e9f8. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/QZNJY2462814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba7d4222d722a3685364e5ec32f278be99f52324ece273bafd1ba80e2187645. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:44:43Z), 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/QZNJZ2496961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc39c504e1020cc7a6a99a25ef9eb0d776ad01c2c8ea9a38fad0b68d7107664e0. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZWFE2435494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a6a9476e46a017f2ac94b61b4ba0baa0b2ef440224c1723493899a2527fa6f. 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/QZWFL2412545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x929aa45dc70765f4fc0df79d380758e5410549a508fd9e27a511282eddf9af4c. 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/QZWFN2460306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe1c5b4b9157acff1e81826725f8b92e027d5e560e8abfd0b0486db7147bf6a. 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/QZWFW2452676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927061b586237c51611f5fca6b0c1df599954580178b3491b85e9a2720e1157f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZWFW2460689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8af49d80d9cf1b48bed42aec0400ae7cc34d06e869eed0d4fd6270dd325bbbe. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:03:02Z), 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/QZWFX2472894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb686cba61829106196162bf21cb616d268a9da034523ecfa7f76c36c431cd24. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/QZZ762443290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707321ed84695068c84afcf920b0300f0f8ab90aca4ece20f084ed4fe7063ff5. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZZ762443300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7b59eb88a0895f3ff97242f8c6349ba471610d73df0aad3161c973a02f2f4a. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:51:12Z), 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/QZZ782419797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013b82478768f8c31a97b7a61b3acaa681d1c169043e0a2c4e551028c09eb5b4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZZ7Q2455885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b37c08cc154c00279480c803dedabf038db2fda17ff87b086213988f43dd02c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QT3EX2411244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025b9ef838ea168849ccbd8c86a4a4a809023016c7773a5f805a24f581e31b0f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZFYY2519686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f02e788f991d0e1c45f82ef884eb857bd4a6e20f25263748b535a52879d2ed. 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/QZES62546446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2374333dbd4e69ed45284dd6d4e164b6e8a9424177b2a941cf6a68d05acaf851. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZES72516286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8f63c4b302b4c306a996daf3e334890f2563b19e0c2921c48256ba1447d403. 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/QZES72519032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b60b852cb63d4902530ace380f4792dcc2be55426ace227dc317851e36fb261. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QZHN72579646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2807050ee2c47744cc8d4531495487a71dfb3a75dfd39d6a469a760d5c3e18. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZHNB2566241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4901944c213edff0b270b49a7a8e1a602ddb13c341d7b93ee25ebf8f9f87775e. 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/QZHNC2541788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2b2ceffb6d175e19068be7b508920df8c12e69d406872070cd9d4bfbb10696. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:51:54Z), 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/QZHNC2541924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c7f39f348e3a9ec0fe043eb8cd37552940dd8cd0e1482f26cc8a344073099d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZNWR2579170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc96ea88ffa1762cfb08fdcfda5b945e883f83281cf45047dc2c4fb27e54fc4. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:34:47Z), 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/QZNWW2577666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8438ee29a13685418c3a9615974c355a9ecbfecf5f29a7025765d2b01cca6fee. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZPLR2524653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ecbef519c5ac9d378874728b5ac08b55aed700f26bc527bde76cfb5f2f9ce98. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZTAT2597175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fba9e2ec17963a90eedac23aa09fc2877a68ec53b435fd7ec3f0ed6271de226. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:52:49Z), 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/QZTB62576229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665efd656b2ef67b31439716ee8bf6b87f63f47aeca5d195afc55944a7c7a286. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZWFL2572179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a00462a9a03a505c7edc9fe27ab07b5922039fa31ac4a5b61dd8309a8ac632b. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:44:58Z), 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/QZZ792500676.