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 0x2dcb3829012ed68c1d69d1a2c04ae5dba955215cd6415c156772cf1f45242c88. Chain 2 (Bitcoin): anchored in block 953588 (2026-06-14T04:52:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/00a3ae51-8cf8-4dda-b5f9-263a6027c418.json and https://artists.proofprofile.net/proofs/artist/00a3ae51-8cf8-4dda-b5f9-263a6027c418.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 0xd008ef76f626ed5c3506ac7deae9b5eb4708efc6f79c136eb1f348478666ba45. 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/GX8LD2303518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e6a04a1c80b461fe944a036706be534faa466402131bdd96a27a24962c4434. 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/NLQ8D2200713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51d4e19198e8bb496c0b202dc7b067c7e7b906013196a49fb51db930e2ce748. 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/NLQ8D2200715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3daa8a1aa5e4dbd9075e60af359f6b5ca3fc8e519db664fd6103985bcc568759. Chain 2 (Bitcoin): anchored in block 960355 (2026-07-31T05:49:18Z), 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/GBRKQ2114119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7374094360da30993d0777086b6a1d8a9811a837e4e8e7f926a2f36a075ceda. 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/NLQ8D2200142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8835a833349cd25d7ceb452e309039235579d5a1603c2d8ffe65d384e999763e. 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/NLQ8D2200892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6bf39c893651de5b1bce093a431182737a2bb8ba8bdf62b233e3814e15aaa83. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/NLQ8D2200894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33082e183067cd7770a3dcf501dc110b619a8e169477b8d3bb6b329bc300a083. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/NLQ8D2200901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca0b9d0ad24be288b7f9484187b45f05d376698c7245d9880e3e27734a16479. 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/NLQ8D2200906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa732a77d7bb775d00d14738459186f3c3407bf50f21cc2f2fcb6e8ba18e7fc56. 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/QZS632530465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37e9d70c1f317da0084019a3dee4c46a2565b868c925c6bb8875eeca0fa3a1d. 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/QZMHL2254688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3aeeebd44a85fe03d458b484ee4c75cfdca00be1e3cf66e235e6c949a1834b. 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/GBLV62110755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5c622150e4ce64c4957a32432bfb04c76504c7f2a8caf2bf5a7b4e4827abfe. 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/GX8LD2440601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3edb1ecc83eea80493910bf53d93683f0ee3374ce3d24d6983d04620afc5fc87. 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/QZMHK2478580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f9804d7eaac7522088adadeccfb7cb0f362d389ad55965d92b7a197fd0f5fa. 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/NLQ8D2400068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6b589cbcb5cccb6b7b7a0c861ad2f82db9f9d37dfbc89fb9705e2bdf2f3b51. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZS632328014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5af20e0ac703fc1acb6a6ec5bee74c8327292cdc30457429a7b8468ed4463b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/NLD682300449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34edb25d198aabe774c36a4e4210fdd2afe9d5373806fe2e01b84af0297fbc99. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DEPI82445825.
Nothing But... Electronica Revisited, Vol. 01
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eed300586b3284a8a2e4828e2b4e4246e9d5a73fbea083bc6c3d7a248781f57. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBKQU2075301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5ac67e0bee14bc9a7549b7ef2b31288a7ee047701d16c11b4caee4b1f0b96f. 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/GBKQU2242619.
You Take My Hand (Tritonia 379) - Reinier Zonneveld Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42176f783921b9711437f31f95f4d54dcc73641c9289ea5dcb124eea9a50a83b. 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/GBKQU2242620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54cb4cdfc99b69a1d636486acb8c28cf2c275359435e100320d423ba377e2a0. 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/GBKQU2242622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c68bc8afd365251a0ab70d14c984c86f38ddb15cf90e50b416d3dc96879690. 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/GBKQU2242630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa487d521516664b3264441834b16e579a2f12154f555e644e66ca7d458ddc86c. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/NLQ8D2201169.