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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7db93d48617a0f2a7effceb49c88ae1d5f7226be0792f6c8a1d579a74c64c0b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1cf3a92b-354f-43e8-8960-6a49188da004.json and https://artists.proofprofile.net/proofs/artist/1cf3a92b-354f-43e8-8960-6a49188da004.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41b7cde0c4830f50416e0a4d9e212bb1735b1548dd3f203e201ded39dfd2676. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/UKGZJ1420009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf557f58bda6dbbffa4398a7cee62ed762d1dd5d1e05147bf2d40cc6086c10ac2. 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/DESY21400247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5497629a2bfb1ec5349239602e40c7bfb6a4f309a6b7284aa206f73308d14e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DESY21400248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13f0365b738c9de5a97b7a861e7489ac6c0d7f2beb023c63e39e8a857ef6487. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DESY21400249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3eca7dd2419c8b67614dbc732b1a752495d64ffbd2d7a5af107878164771f1c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DESY21400251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ebe5b685457bde3f1fc9b9ba5e6f1bfaeab2b888584e448083948d3286168d6. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DESY21400252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112b947a8316f4216a4ac1c5dfb2af46b3ef8569131d322d4228c1c9c05d84c2. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/DESY21400253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4913c16712518ecbda5b21255559884522769dbc918843e081b16454490046b. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/DESY21400255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49c137040c9f6c95c392565f4b42299f4825e37e51b76af86e744aa36f5a289. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/DESY21400257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754bd453171d5e3dcfb249d06460cd0b95df07f41f8f7ac7a9b2583d03bbabc7. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/DESY21400258.
The Maxi-Single / Mobbin' for a Hobby (feat. Planet Asia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b0df34638555e5d2360d20721b282cd7cd4375007a9bf70b5a323876309d80. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM6P42305065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x887aeac6135590a99e46ce5f89577ee3f865fa9b31cdc3fb8abf72b5e3a8e28b. 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/QM6P42305005.
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 0xf9ef6abc3585a43bc9177f6e5258bdbe51af6c2f8f126fcaad5fb9e9b8543c11. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/QM6P42305010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5689437da92cc66286d0a08c8168665765977bc5cdb5030368ebc426e31fcb. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QM6P42305014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf501d79dfe7ec84e944d69daa4656e275da3a4bd251aa2dfcca3b944d40038b0. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/QM6P42305025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be83ec160899b7b81cdfa655d9e1603a314051c416d33a5a6d4785a16d15948. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QM6P42305043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c43f60fddf18f5763bee7306c131cdbb45d94f9e7485749a549cef0ddd543d. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QM6P42305063.
My Heart Is On The Edge - Falconry Data Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3eedb2d3a09ee8af3315f05f12babc015ab6619d8f48399e525f128d2247d0. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QM6P42305070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ba0f96708e09affa7dbe7389f7d59fcdbfcb7515d7adc378b9f2c2a6c5dd64. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/NOXYO1704140.