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 0x8b65b9567f6de9600ab2768f66bad487f14c2e95abfc5a1e6e6c87fb960ecbad. 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/74fb8162-138b-487d-9e03-e67162e77109.json and https://artists.proofprofile.net/proofs/artist/74fb8162-138b-487d-9e03-e67162e77109.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 0xa498a6baf4846fb19cb93ae4d0531895b5c75fb1fdb6d5f90026677d61536207. 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/QZNWR2248554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb560c0525e1ec143351fc966a4789f16eb680c8c7a36e632b109e0734d6b1f11. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/QZNWR2248555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f5917551c1991104fb26c4c88402f037682049171a73d5eecb5607d0cf63a5. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/QZNWR2248557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95812ff7462870fca94e5f04d612a65b3918a8aa6336c7831725d1c955977ce7. 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/QZDA72004559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb73f739e0cc68dfc2241818d04b729265186f1705a79f6ff37de68ccf2f065f. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZDA72004561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2963251cf0566a8f569a8c0b4ddb64a6830898a2e138b35c97dca50eb1c8842b. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZDA72004562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8d4a585991bec088fc0d3d55f02491beb2e5a7db82eb437d4b32216052cfc4. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZDA72004563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9100215f6b72a313081eef7d6bfbc6894be179660db9470cfd077098e687a7e8. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/QZDA72004566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796534d4699e2d6581099272d26a77c6401b95d8015f8ba6e2425800081d35b9. 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/QZDA72004568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f6eebee4233fc97cb85653aaabfee4603f8fe469fc4efba97be0db5b6ab9a0. 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/QZDA72004569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4096ac54070c50ef7c27ade7c4019b38dad6139fe2c0ece1038a55d1fcae5eb1. 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/QZDA72004570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c5abb9c96f96e4a9830a69aafabae9550627987aee7e198a48430ebf359a12. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QZDA72004572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7be5afcb754999dc8f4f2166340d2d68cf4f400427e4f46ab7459f8b7f8c0d. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZDA72004573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e2eedcc300059503e554b3faca4200643f8aeaa6d87f357e34c0e445ca2d83. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZDA72004574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1f878099fb9e0814d72815f5b7890713a032c5ac4a1a66e53a0d1c864c260b. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZDA72004575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6744bedfff25c17b7592a23b264ab6ebe4ca6159dbca2294d23ab7e9504d6377. 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/QZDA72004576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a87f429d899abd90186f4350ce3de29bc62e494e95492fe8941d25bbca1e63c. 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/QZDA72004577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680b99f96b74f1560124d25f3d9910ac4bf41290787e513d2028972242a2594f. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZDA72004578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ceab17e8c01a10992d0ccd93bbd567a560cc6649ec356e42fc882f615b026f. 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/QZES82385577.
These Pirate are arguably TOO jaunty ykwim like when do they do pirate stuff they are just kind of bobbing in place to the beat
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7648657fe9ef095d2401fe07845b94261874e1ebf576efc3839160ade706dc52. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZMER2315441.