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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e67cd72ff035bf2b33c3e9f62a21a34b296c6cad3cd6434c6c349e9cf36742. 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/3d511e27-42a7-401c-b671-0e393cf51086.json and https://artists.proofprofile.net/proofs/artist/3d511e27-42a7-401c-b671-0e393cf51086.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32ca987a3f686238f426a506b17adb927380a8578a01eb92af20edf5d6ae617. 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/QZRP52349055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42dc122c34bc4aa70c67730f6d957fe525791a1732a189b55648024e1fe68150. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QZWFN2433866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b612976739f3d6634a581a606ab2ef4d778020746dba21879de623c71d94ca4. 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/QZWFF2479128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d57411bcf59331457313902b066d77a4fb660b76c16725c487e869210d115f4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZNWZ2462617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07cbad28fa94538baa0c276397a2f142d824eb254066b1a6b34fe00ff69ad4eb. 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/QZHNC2483722.
screaming emoji 4 times i cant put emojis as the title
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f746f320bbe49e2d1e5123f2816bef0c52f8c5065fecf934a62a9dfe463d19. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/QZFYX2486460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed85476432ebce22b5df7680601f585191f8571ee46a509230bef828cc02452c. 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/QZFYX2486408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34060788a2c43578e9eae699c36cbf2ce21b45531892e42dd38259aae524f5b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZFYY2409878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4834796452e2417efeeca8815394765780ffab342b34db48c1d2e7705c7d9e55. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QZTB62447118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb97df047c6a86f0b66e8885345bf513f3b689c86af0666974d41f86c660662d. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZTB62447119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616ca4cf654a66b7c05147ac39d576aec86ede15143bb0ddf46660dff5257039. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QZTB62447120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6171198a164ffc3722ffbf6625680a397e6d7fe4a5ecf8650ffcbae68ff1d1. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QZTB62447121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565aee96acab62147d6471a89ee50849f87d60b49f2f6c0b975111558c1bda6a. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/QZTB62447122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6316f6492956c2e0dc7f6c01d3bb00c79c28e92b3089498d7407aff7bdf1fd. 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/QZTB62447123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2276d52cd77586c019a372546fde0eea1f7afc33208ec9b61dc29e059c659a0a. 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/QZTB62447124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68324db0cae6af0b556a881f8fd6b04e58b184b6e3d26c70d7631bd2ad604907. 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/QZTAW2479860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60de84e0b42ca8b0330e1d463c4ff0197ae3c07246c31209324048c78c45462a. Chain 2 (Bitcoin): anchored in block 960339 (2026-07-31T03:13:37Z), 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/QZMEN2426114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa14df00fcfd34c9905480bb8155a9fe5eac621569ed2ac65fd3ce650832536. 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/QZWFP2467183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c90cbb78d2c93e8c6518b3cef55a7776974bd3e87bc18f328d6bd6f23d6254e. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/QZK6M2442080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272121c93207c3fc023593d9b1227b4ebe40941b95a91c417b3ef875a5ece104. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZFZ62423481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e030d9533e8fd2cc2afdbbf6dad4b395f6b4f8cf76025a1470a14c8e30eb90. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/QZK6N2352543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624c8474233866da88624b5ceaf1fcf301152668318bf2498680c598c197a684. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/QZK6M2411315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c0921f8d5ccec8685240897d1bef307d17e38dff169dd393df2070d2d4321d. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZTB72476948.