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 0x44383eb036b6180fd352527df48d6e57437df6578231c8182035ac4a03e62e07. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c2bfbf91-587d-4ede-b09a-85f903cab7ed.json and https://artists.proofprofile.net/proofs/artist/c2bfbf91-587d-4ede-b09a-85f903cab7ed.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 0x5b51d143f46568c439ff2d4dfde9ff16f34ed4c0a9d1fe8e3f9b4c9608c390f7. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FRD9A1901010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257988fff8d67eaa486ad65e1c863622103bbe695a896b88cec2291817bf39ea. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRD9A1902060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce80605a5162afe0b35e8d3493e2e18e34805ca4522ab2bdb9e3901cdfc1392. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/FRD9A1902080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7da13b4e261f62e4b62aae95bbd902520c5df02e5c2b64fd1d3c101336f99e. 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/FRD9A1902090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e81025a1ad70c407cfe08948987654e8aa0e2c4326d4e976cd127c75f25e31c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FRD9A1902100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab93237af23e60eee23d41c7c27ef3080396104633552d7fda59b40763fc8337. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/FRD9A1902120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01879e68b67c3279ef4e3c574fafaea0ea4b00d3da4937e6324b54c94c48028d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FRD9A1902140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01879e68b67c3279ef4e3c574fafaea0ea4b00d3da4937e6324b54c94c48028d. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:57:00Z), 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/FRD9A1902140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062c2115260461fe921cc68f0f629f5006b2f9ecea6bace9580252b06b0ff282. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FRD9A1901060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062c2115260461fe921cc68f0f629f5006b2f9ecea6bace9580252b06b0ff282. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FRD9A1901060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eda31659aba413791b23d445dda5801a9437d81a991afc2c7c7b8a26adf9b78. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FRD9A2201010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa569b2764fd323c11ac26e7f0492ebcadf220b96376356ac474278548129649f. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/FRD9A2201030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485c5a937a5b8a43e8bf84605e5cff8de03b4c43d7382e7e980b341f059397ce. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FRD9A2201040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c9e312f8a783a450a136ef010192ca4576d9bd0eac1a16f630dbea1a12e9b3. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:04:31Z), 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/FRD9A2201060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385e04fcedce1421a57f808a7c979996dd990f1faa89a63e6ccb20fe644189fc. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FRD9A2201070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf259c11b3c3fbab1da65d9d919d5b7ef7e887f07c9960d01b623b8c3851b1a. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:28:28Z), 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/FRD9A2201080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef4ba06c4d6cebdd7a322f39d10d0bd732fad8399745a62f91ad6e19edc3a3a. 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/FRD9A2403020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233267428116961860e1444025391a9aa5d7df829ff7f972c39ae46b88502d6c. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/FRD9A2403040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b1a915037a61603822ef9a20aaa2ab51d8f4a539ae2878d41dd30f513d667c. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/FRD9A2403060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd164e52a8bee31aa28e3afcb679f47e88ac8976c69102a84eb1ca688e9f20cb5. 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/FRD9A2403080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c2d03cc8a06e4b77ed833b3efbd74f1087f719ce17b0152a046ca19569b0dd. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FRD9A2403100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef4ba06c4d6cebdd7a322f39d10d0bd732fad8399745a62f91ad6e19edc3a3a. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/FRD9A2403020.
M. Lichen - Le gonflage - Version acoustique
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ba45c62f9f6c0ff7f966f777d514d0daadab55d3e7e1a3e16b1b5b23de2893. 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/FRD9A2403030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233267428116961860e1444025391a9aa5d7df829ff7f972c39ae46b88502d6c. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/FRD9A2403040.
M. Lichen - Le décollage - Version acoustique
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c90da4632daeb5721dedf725cdaee829ce1149c868b79e64c9f52615084d62. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/FRD9A2403050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd164e52a8bee31aa28e3afcb679f47e88ac8976c69102a84eb1ca688e9f20cb5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRD9A2403080.
M. Lichen - L'atterrissage - Version acoustique
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea62443f2909b4464634b6821199e2616038aef783ecfe36c8525f0214f13e23. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/FRD9A2403090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c2d03cc8a06e4b77ed833b3efbd74f1087f719ce17b0152a046ca19569b0dd. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRD9A2403100.