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 0xc3f672aa8d83eaaa5606bebe1766b312a4300924b0e1d6dec0d6a4730d996a5c. 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/b6f030f5-f63d-432e-aef0-340da357c06c.json and https://artists.proofprofile.net/proofs/artist/b6f030f5-f63d-432e-aef0-340da357c06c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Live and Learn (From "Sonic Adventure 2")
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 0xeea560745dbf392cd7a1fc498adadf5bf8868fa2c189c9dfc8fd6bcaedfb60a9. 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/QZPJ32152881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613a0ab7d4c0e235321bb5f471cca9b442c0f9cf7912d487017d9cdedbc9d7cf. 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/QZNWV2019479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c43a4f32b27d347388c267a43779581acf4310dd3a50dc4da412f07c311289. 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/QZDA61919771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad34b096145685d27f6d53bdee024bc878fbbadb82af9731bcf70ca5938dabc3. 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/QZ4JJ1978158.
Lifelight (from "Super Smash Bros. Ultimate")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eda7f34649cf0cee5c2ae95b2d5d3fa4e824089dede70181f4f3af2f1744306. 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/QZ6K41802448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38dea1d5761a5e5673af4caf8011e90968ddac5661694695c08560de44e4d8de. 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/QZ6K41802262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff63afe9ebed925489776686f9fed9ae5ca259cb2b56bf9582883e4b6bd02388. 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/QZB4J1863821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2362d2cd9b34e12be53c526115561ff99b765175ee8fbe5d93652ef372d9c611. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZB4J1826158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6e7618a5365ce34d7cc193e4b45b736a60cfdee90048fe116fd4ddcce2390d. 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/QZARB1839056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044822d6204358b158388027f45f5f5993e5d2f6046a6bb191d3e079a1ec2e88. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ9Y21781575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe233769c82fbdf4f645c143a5d1b391fc6a60b149c0d243893bbea23d94964. 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/QZ8LD1797168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a95c0e43de98c83fafa01dca18a147c9936657ea44399f9850f460bee9e8a0d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMPKX1742301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446d0659f83419c77e57997606e9bd04f6083bcf43dc45d13405a70f2e5f1039. 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/QM4DW1788723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867b1dd71241d0f91810ec77daf100e6a28c7a05c9632cd0c1ec8b405d4f4b79. 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/QZ4JJ1764680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8fe5deb0e313537dc6da303f4877e956ea31b3adc2beb917186332bfb0ac3b6. 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/QZ4JJ1755485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70f8f38a73f06caadb1629d811e6e5755f41ae80f0bf40bc8507612421c9c1f. 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/QZ4JJ1669171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64323776f53c1ad91ab79428a0bea2da68fb3d840b8c8de6b60ad3ffd46aef88. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/UST8K1690015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412952e1226f97c5a837d73ae6babc70d22f9038430d153c89ab5b68a1662e45. 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/UST8K1609938.
Ninelie (From "Kabaneri of the Iron Fortress")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f28a0d7329960e02e1117f94c13079be47e80763a2891347903aa47f9be830. 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/USE831582999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d57ec1fa6cf352bad6188dd135479609d787713694742517b8f703778140809. 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/QM2PV1660329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbff5641f1caa039804d1a9185a5fdff738ed39d7a115e2b9e4e5aa1328719f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM2PV1658866.
Something Entirely New (from "Steven Universe")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037dfc9b584adece5a88d298eae8d8380933a6b4689421d017002b6479e797fa. 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/USE831548227.
Lost In Thoughts All Alone (from "Fire Emblem Fates")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59edf456178fe8aed258ae6fd07745297293587de5c09c9f86e6602c117fdf77. 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/USE831546952.
What Can I Do For You (From "Steven Universe")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b202024f34a321a4c34bd1fd7e02cc8f137b22ce49cd337cb621a194d34230. 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/USE831538107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631e119f5400037f1d958a30737fcac9ea79b3369431e9a9682413376204e95f. 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/USE831524311.
Haven't You Noticed (I'm a Star) [from “Steven Universe”]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad543291a1e8826aab8d5af8773799abd02670d5e90e9721612cafbc36cf4dd. 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/USE831518742.
Rose's Farewell (Love Like You) - Steven Universe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b045918e6c249f04dc4cf4f2823ff82bd74bdb7a5018581ee620a86c5c8013. 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/USE830980351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4bde74436863140d6e6e9db16d19239e7c9d96dbfdb44a0bda8320bc9a7386. 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/USE830990217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec71e29234040baea4fdd0ec8145c910989cc2793eea4ffdf81e5180d6b9423. 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/USE830964222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c41ec3d792d8d3b1d2f9df8508646cac326bced860cc2197f49498deb9b62b9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USE830947107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f54e61acb84d644d47e74a7712ab895a3f87d26f062778cb3d3c535a82cea4. 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/USE830909537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88ed7eab67cb14898c35a05f88a22469acd3a0282cc541a067db1b8e0ed8cf5. 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/USE830909538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40a98a5667cefba49133be40799b97d0706d7108fda3034dc83d5ec83b86d14. 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/USE830909539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93add33fd6f6d5dd32d9d08a5e47d7d46c3208dd8776333753703683ae07116. 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/USE830908699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba85cd7bb3841ea5bed6541aa0017cc6ce4857c30229646b440f152547a8ccd3. 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/USE830907885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc54bf3ca3da0c996cce43d235beb5f7f68fe2b2f6d40667de240b0e07b9f55. 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/USE830907886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3e4a2654b633396cb350b7384ce3458f2821b963255274cfdf0064b595fad8. 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/USE830907887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2033c0f490afe01aa4fee9ce368dedd9ed194d97a4185a5d1cd1724f2c19f509. 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/USE830907871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996cf5b728f8c2941aeada8a455bfa6e833cc64ec37f617c4bdabea2a40e4808. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USE830907856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0f58f8ea436f06e01fe7f3b55dae91853e473a6169402d59fe7c231af4ddb3. 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/USE830907859.