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 0xfc1d99e5d98be0bf46ab7700fa0c99180dedab5a3ef4a3d51857d3265cff8f7e. 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/38952dc5-d5bc-4bae-b1bd-e04293eb1f71.json and https://artists.proofprofile.net/proofs/artist/38952dc5-d5bc-4bae-b1bd-e04293eb1f71.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 0xdebbc93909d883cc3308144242cd1b269399ee7a685727c633e99d1c4a7b7c09. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T13:10:36Z), 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/QM38F2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e297f0eac8a05b43b67235c79a6a69fdc922cdd3d22dbf466ec9d580d95e7c4. 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/QM38F2000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe595d8642e44b0b8aa31ec1bfffa7c805158e36611a377412160b1b6c85e2787. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QM38F2000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe595d8642e44b0b8aa31ec1bfffa7c805158e36611a377412160b1b6c85e2787. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QM38F2000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582a851c45ebb0e3858a576a6994fb1162286cb1fbc0cf6ff1db42dc72cd15e5. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/QM38F2000033.
girl at the skate park who smiled at me after i fell
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0927076960aa2c2736ea7da0cc3e252eba3db41f24c3e03c9e31d50aa4610849. 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/QM38F2000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4d733aa1f3168229ac1c8b013c7196c8129d56d96966fb51d380835705f4a9. 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/QM38F2100062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d603882aa558a54e6a21ec66822ec00f79c56d05455145b7a2a7f36c9682a6. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QM38F2100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a98c93fc3719a2685547f2b7b1b2fc372445a491d77a330142520eaef56453. 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/QM38F2200026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b779d2642fd2d26f0bfbbdf66bdd26434f57fadb6ca82f9f944851b530e8c99. 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/QM38F2200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3819f8aa3a2ce76ee8918f483b977432d7004c182346755ab89da59389389f27. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM38F2300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3819f8aa3a2ce76ee8918f483b977432d7004c182346755ab89da59389389f27. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QM38F2300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bfacc743a3b9d8f1b2ed343382d269736e635f3662fb09f0119ceced7b0ab89. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QM38F2400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bfacc743a3b9d8f1b2ed343382d269736e635f3662fb09f0119ceced7b0ab89. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QM38F2400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8986a9d7a6bc8a6aa3d3d9025f93691b5caa00202c4aecabe98b38d0bbe5a25. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QM38F2400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0320a1c8c84e1667e4711d83f4a513642db6766381568b693abce010647976. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QM38F2400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1fdfda6e9752af9a07cfaece9be8055b6eca3de20bf7a0f665f0046ac4756c. 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/QM38F2400046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab60e9193bc2a5a76f280c5e08378901cac9a88715f5a1be63bea2390444eef. 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/QM38F2400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bbab5fa6c110689e2f2a9ae90e6e8f5943354774e3b7c273f1d3fa3b3dfe85e. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZWFE2536959.