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 0x080a7ac8177a681f879c62e74ae009842f9e57b0c0a0c78d283b1f085380633f. 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/83b0357d-5cbb-457f-94bf-6826f923d607.json and https://artists.proofprofile.net/proofs/artist/83b0357d-5cbb-457f-94bf-6826f923d607.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 0x3e29c3889967f1917d08202f8662c657a543ef476ae5e92a6ecb0f7d0ae24339. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/TCJPP2106988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568995d41c12d20bdc985b7585a5cb1fab1bac456020d2d54f5cf7579fff6c38. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/TCJPP2106992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1762dc87189d8bc118bcfe4473383aedfcfcd20cd7dae122a25427695926479. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCJPP2106994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81650f1978e4fcb241aabdf510c91c9374f0df5fff2c25f1b3c145832a260374. 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/TCJPP2106995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b79d81fd1e2efc3995803ecfd948d54fec53ec73e61ea08afafa723fc70e338. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/TCJPP2106997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17291f977ab8a9d69fccbb247ff97e8cfc8a37d9022e19119c854adfd0624a59. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/TCJPP2107005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34057471f8509093c8eba51462ed5ad8e583c0b3b0c0a6a091ab86c0c9cf4734. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCJPA2456110.
neo tinnitus - tinnitus Remix - Short Ver.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59509c41274ea56a9245bcdaa1c0161f9e4d81772e03e3b42ca10f682995c55. 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/TCJPA2456113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a11d328a1470514376ce33147b94a40fea12b9de8c9e699af62ce3ed4befe0. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCJPA2456122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c1f6f75d1d2ec16b79f8922d3a282859bb0e10efaa47ab02bec5c0534ea486. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/TCJPA2456123.
Alice in Misanthrope - Short Ver. - 2020 Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0783d937ede31946fb6c800910fd1a670068f5e5558c41a01549e5226ed7e1ae. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCJPA2456124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e84b6adb2179dde533ab22e0f7a3dc5c3c02a5def87a295249203d207ddd6dc. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T13:27:11Z), 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/TCJPA2456126.
Calamity Fortune - Short Ver. - 2019 Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389238f0d9267023be4842ce5b2fdfef09caeb11bad655b5da541c14701cf3a6. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCJPA2456130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760da4b4d8812dcd292b888211fe832af5c6233669c02f06331eb20342b3d749. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/TCJPA2456136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b69ab2e0ba1804b16fe6133b13d310f1967412538beba96ecfa04ad33277fbd. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCJPA2456138.
Doppelganger - Short Ver. - 2016 Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879911135df3be304a7ef658512a7b4c65d970f938a5834bee4e257881f88a25. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/TCJPA2456141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1756aec5a1d691d5d5f51cd0df7e1fbd439353ac48c29311ee8959c0632164. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/TCJPA2456143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332dfd5f13b4afc867f58e28da12850813c89a5b15d79f2f149f09d3772f9c17. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/TCJPA2456145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1629e28a3a22c37294dc76a1f9df946fa9ce8483faf6716366e9046b090862fc. 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/QZS672587124.