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 0xe906bc899b3e2ac903b82c5ba27d86ab05b043d63e8dfc2b67cfcd232ec15ec6. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/26192d03-8c14-46c9-bdd3-d579dfba8ec7.json and https://artists.proofprofile.net/proofs/artist/26192d03-8c14-46c9-bdd3-d579dfba8ec7.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 0xd75f3af88adad40c574ce4205b323c369ad2c9fe3e612d135d3e3b220d851142. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USPQM1922901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8de0753d3a6f083c5b0cbe350d4df97e4fdeadae8674da9edd0e8b776144285. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USPQM1922902.
Somos los "Banderas Negras" Nacidos para Perder
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b9cd3bf0a970a05247d81acd6f755d94949d7d574a4e7ee972fbd959c463c1. 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/USPQM1922903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1cd9e95ecd57ba5d401da3f40360bd642ac1f6666d4d58620327cb8b17f8028. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/USPQM1922904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d4714fe489de4c625f76163227574d19ca8cdeae16fe3da6977811a32f9014. 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/USPQM1922905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da62ca9a5105e8a05c7457688ace3dcc38abaa9538b2c13b5db14c20ab53170. 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/USPQM1922906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52456e8c53af2e54882da9b58d9a42505ed209571cc6866ab40473033c0bbc4f. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/USPQM1922907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1434594907dcd8935c3bcbe2cef198756c84eb8ef595cd22a9df760b3cbda555. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/USPQM1922908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6edf3d14c24465846ef24016883ff72f0c3315e3be1c11f8ee9231f568046c3c. 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/QMFMF1525266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8594911d8daa1ddc7f4f569543073f96b46ba98f8568d3546c7ec3878b956b99. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/QMFMF1525267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0fc46cce8d746f809e3a42dc22939ea641b88396087d6955be0253bd940c5e. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QMFMF1525269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84ca5564bb505701ee86f751285bbf10af9efb00a9b62871ebe4257d54e4c8d. 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/QMFMF1525270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22808093c9f272348258fee8b59e352a2d7203ce5b33e52949550eb00d49d4bd. 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/QMFMF1525271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ea1137b7101bb6f63f155464be90ab082ecf00652ce4e6320c7179115adf2f. 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/QMFMF1525272.
Resurrection of the Blood Zombies from Beyond!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127b8b7929ab899302cf2089c60542718d4b4b6de20bd0e8e0d2e8bb4dd1910f. 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/QMFMF1525248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12ffc510c9719381950567992fdcf6d801f52360333f1e923ce1f78a490fe07. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QMFMF1525249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637d5909ab2602d00f5386db15af3b919ccd824759305d5535a4873f1b0b22b4. 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/QMFMF1525251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb82c7f4ccdb8805ead4de606a9de29bec99f57d7e8209ce04d6a0af3d168b2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMFMF1525252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04364a02daa3a7c01c9234a8348efd3b822f5c256e869494d0861093a3b785e5. Chain 2 (Bitcoin): anchored in block 960430 (2026-07-31T16:09:41Z), 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/QMFMF1525253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b33c27906faad4abb7eb416e60ef3a8dd2acd8df0ee1e8f61c9eaea8e4c4a3e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USPQM2326901.
Himno a la banda (Reaktorn Läck I Barsebäck)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27551c406e3cb09fa2e85476464a0b0e209987af6fe8fa110fd894d7f7abda5. 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/USPQM2326902.