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 0x1676924d6f4a7b082fbaac6ab51af912997540ef60d0f7359f0916152a4b8010. 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/0c241136-d60e-4504-8cd0-6b53665a43ad.json and https://artists.proofprofile.net/proofs/artist/0c241136-d60e-4504-8cd0-6b53665a43ad.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
#Tuvoulais (feat. Franglish & Abou Debeing)
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 0x810b16b1d2adbe53c84f54c32a4dd6f1365fcbe93d6f9cb93bed44a39840832e. 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/FR9W11709986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e54575d6a3be8a8d0cdaf244e22d062b3dd3ae804e9d87052a9149471d6f159. Chain 2 (Bitcoin): anchored in block 956775 (2026-07-05T10:41:06Z), 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/FR9W11718101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3064b88ed2c708876b91654047d17cc1dbd48e3ae0473c5a1b135ace77b4137. 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/FR0U91800113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2059c63902d803119ac9a08352f3e527287284ab8222af7202d474ddd7eee81. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/FR5GT0800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0241d60fc6bfa80afcf3b891f2f489c7223cf5c525cf2fd652cd46247209a5ab. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR96X1962298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43150ebf5ff01659193cd1e72bdbaa3b0a257e9f31f90a6ca3a2dcb85ed8b9eb. 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/FR96X1962294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff74ab186919f6f1202a60182f733befc76f7f7782d48ad4815f60a97bd51948. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FR96X1962295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e92ea9e387de014073b6338962b6037aa250519050db66aee7290e6531b384. 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/FR96X1962296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c7e3cfb84aeba28cbe6971e5b0933631b678de25014cf4958ea1632da92b93. 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/FR96X1962297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08674f5880e872f276227f4cc4acd14c2e08261ff7c39401a78845535795394e. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FRZ042000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4082b6adab17d3d55f86925cff53667bc2ae4026cd5476ccfcdfa1b7af8224. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FRZ042000761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c71309e409d4e2fa4a7d9000ee3a6ed39a51536c230fe25e768ba0eb4fb9760. 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/FRZ042001104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4727fe5c7b0ce6a19cc1be3a847722a77b9e8ef6a77f8d7ae7b04db2f82168. 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/FRZ042001163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeccb7f25fff8b9c8b487e67ffa8fc4be7547143c4834411fcb9da1db1d682213. 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/FRZ042100938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7b92e6d2db9af5a1c1ef877b0e85871414ec4595feab7952ee0073303fbd8a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR9W12225308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68502ee8834d57d258b9c80715289676ee8a244adb04f87d8e2c539d05211dd9. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/FR9W12241128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12320558e990c305410f6bc30fe983328eaa9c62154eb6e71a9efeb4cbdee91. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR9W12302490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffeebd8f340440bcd7d8064b58aa597a88428c3b69eb09bab5ccfdcdf205afc0. 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/FR9W12312527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4cd18428d3d40d4199d424a49c5302f185cdaf6f43996e990add2bf4071beeb. 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/FRPZ92350480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e61711ee7b14f858c6f67a9adc48728a60145ea6a5e23db35b47463193c3bb8. 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/FRPZ92409080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e6963d4ce34de8ff028f9be41da9b71b891e0779228d6b73e160fa804c39f8. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/FRPZ92409070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3faa0a315b5892609443dd317adfc4a952fab5b1a2e363124dbbc8b7cf576aa6. 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/FRPZ92409110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b9a4642236517248773bee8e5ede41ba2ad35272cf62990385a7cc8fc74a04. 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/FRPZ92409040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f9bdb868b317dfc60abae7f113920e31311773aa90e7c498aa6ef95b79bcd6. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/FRPZ92409030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8285d58460435aa98c66e3e2c0e44b5ce72597fa480f155089f4cf61c434528. 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/FRX452564031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492ff4b1b04b2e136238072902b75d5647c95ba95679f5724f122269e52b4e33. 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/FR8FB2208200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492ff4b1b04b2e136238072902b75d5647c95ba95679f5724f122269e52b4e33. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR8FB2208200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14070695ed0a5f4e18e8cc5975637f3bf004dc60f06af96a1da898badc345233. 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/FRZ042001211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa358245e9d2ab8502773c71b27299edde9b38106b487486aa5580be1d18474. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/TCAID2421907.