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 0xe882ad718f7c78aa64f9210c3f11a3b70fda5d765a942a6ca1b900b72b645e37. 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/818c78b2-6af9-4957-9228-3675cd0bab83.json and https://artists.proofprofile.net/proofs/artist/818c78b2-6af9-4957-9228-3675cd0bab83.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 0xfd74f22c1b7aa8a94a2ab52ebdd41e5e393b1294ebcbb1c8da99aa25c0e4d786. 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/DEPX11800037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e3f9263f8ff92f7db5958d2a7cd0cebce5b4f48cd529c26d6668e3670919cc. 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/QZRP42437461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a29eb79222c46c6cf0b38afa52137a510b5bfb5f068d476eb37d6017fda79d. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/QZNWU2414890.
One Last Dance (The Official Easter Rave Anthem 2024)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb399ab627aeb56378a50236c97f0b3e8e62ee394ea2fcc8f3114c97a2fdd3b8f. 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/QZK6J2437600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0826bf8de288a71800381827f5ce9c350780f800a4554d14e47d8dfa5b2416df. 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/QZFZ22454815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d29f5ba4499d58494d9707fd06f85ed2f63504b141975f4f4231afe44a9f6bd. 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/QMDA62376344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd8d2964eb8630c59fbd75ddc41a01a39480a052281407633c2c7bcc0738a65. 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/QZK6Q2456024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa1b5f600111876e44f150ab3f4be25c5fb1965248e37baeab3b3735f283508. 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/QZK6Q2455619.
Sin Discoteca... No Fiesta! (The DJ THT Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2e8904bac73feb094b30bded1e5ccdf4ef36b90e59bc5e2564a939437ab2da. 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/QMFME2001016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae96903d336d745d18beb1a9d30afeb6ac8e8cfc1ab31e997ff44c9eb3c218b. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DEPX11900013.
Poupée De Cire, Poupée De Son - Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8c40606fb163f48b6e5f84119d87f1b9b195457f20aa3f5fa278aeceef42d6. 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/DEPX11500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb231c6551a2034db416a3663ee898ff216d8ee726f229150e0a66bbc923602f9. 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/DEPX11500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e2528da2f8a07b34a52e05fad1fd48cf184a08d3ac97c4aec990434b64ee2f. 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/DEPX11500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec6bcc5296465230ae488072a4cee691eecc248438ddc4e46a1de1aea835dbd. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DEPX11400143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5fc92ca70a568385914138b4aa305df8ea492194e3a22f79ac62597fd2c6067. 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/DEPX11400114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd231fd4298155b3cb347a24d5a8ace0893be06b5c3fa8af25477d44a13e98e66. 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/DEPX11400115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e0e75fab1fcbee6d2e7f85fa099f0fb1cb9856eaded8f1d26280ef759c74ec. 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/DEPX11400116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf51be0c34ab234338d063aceaaf8f8cc55cd1c0c0c42a90134c173f273b273f. 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/DEPX11400072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7466eb5dcb623c7c8ace40bedc3025c5395b7df3cfebdd8de9e266b1e945a5e3. 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/DEPX11200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad6f76447d1964a2dba648b6360050137c028750a2ae4052d55a26a306b4ec7c. 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/DEHK91791773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c1d895392cf92b93c9881f18d89a1d8b172889f36e8b31f8e67b314408e49a. 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/DEHK91791756.