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 0xc699950648fc803951e28349cc6203c52d5ba86a0468803a77de232fe3d2f89f. 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/656ed7e6-a06b-4105-88aa-ce689466fc90.json and https://artists.proofprofile.net/proofs/artist/656ed7e6-a06b-4105-88aa-ce689466fc90.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 0xb5720afc364337a693fbcad8b14497302fd78e6a3d21b95fffd7bca0f2247d01. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/GBSMU2743692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0740f149c9dc1b38250b1b300ea6b11e4c175dd741cd282c7312b37deaeb219c. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:11:02Z), 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/GB2LD2410245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49beee141d0fcf8a630baf9e7bb65dd8626869b5b0f4fae281b6aa6317944eca. 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/NLDD61700097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47eac3a9b1ef4e9f1add5d60af4ec49117b2a4fdc8678793e84c355fbf87263a. 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/GB2LD1800736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe51c25b89828ee181f98fecb234ed07efec408ec63a221950e8adb50e73a93. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:02:36Z), 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/BECH61800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48713fe2b1d006e293c889b028b0e4637aa579ab22aa04054ee7c9fa60864a0b. 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/NLQ8D1900337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8afc2399d2983644ed504049df7cffdb1545f85e1eb3859045ca6030bab9ff4c. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/BE3JV2000001.
The Wellerman (Sea Shanty) - Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc39bb4c33ae6710777a5de068d17c0a7c952d61359e234313e7d06855c7862c4. 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/NL4VT2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c0e43b81b79ae28104fc4fda44f89a68b8ecfe0aabca0dcb47d4856eb8b2ea. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/BE3JV2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50e3bc251e57ba472604bdffc12ad380cf50f7b2cab2b8ca760c25e6053b638. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:11:00Z), 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/NL4VT2100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29affb1c5ea08b5f6ad62738637facdd35d7babb8c0f3269fc67c79d983f5609. 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/BE3JV2100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab860644d47ca16ac4f31ba1692b65bc98b1e52dd3b6514671ce4260c7c9f58. 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/BE3JV2100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd288e117036bd77b5d0499ad430b757754d9b604e95cc5fc0c6e8c07802db73f. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/NL4VT2100070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x777ff21871c2106ebac35b13af65c0395ca55f717d5462010ab6c590179d75ac. 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/NL4VT2100083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf629162a26794689d2d7c58b6875c75cf0c8fd640908d5c8c5de24687b8846. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/NL4VT2100093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2c52f2db7026408bb586642f0ca410fa6544980eabba43253f93b5a26b638d. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/NL4VT2100102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778c1fc3ee71ecc3e5040e7bca32062deaf58aef4f10761ed975b5b0b12c2a1c. 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/NL4VT2100118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2b74c9e18411d873bc411224d2673bae1133d51a4e8204e6959f607b2355c1. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/NL4VT2100128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f64458285f9ec86e17567ff0aa279fc1baa3589ed816e280751ffcae251e4f2. 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/GB2LD2210034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c8fb5c320572d20f13c8b25c809784889687685e7372c863e01bec25e76f59. 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/NL4VT2100152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6621ef937a885982f85a3cfe534f0984e3029232636c942356dddbc7727c0bbd. 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/NLZ542200991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43dc52dff490061aab2f4014d437a94bfc24302bf02e8465aba1110f473bf61. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/NL4VT2100225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc932df41aaa01f38566d8f1cee9019759425b9d53e87944191a2890b56d7b4c3. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZTBD2319402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2aa04eda21e63891bada25b1997fade3cc058fea89a599aa373fa1d9e756fa. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QZTBD2319404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95cca6108fe7d4f73cdd3a8bd3cda9dba420d6d9eafff19b584224efb2f4328. 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/QZTBD2319405.
Warrior (feat. Diandra Faye) - Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec22c29e706894a27d17217139154c19a1c77bf9c593218178a4a0c449cbea32. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T12:00:44Z), 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/NL5UG2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd9e8e05d5b4930bea939dfe85556e2a976c3f8a92931523aa7d6673a85f0e9. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/NL5UG2500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ceb7e4b1c50d538bbd503284c226fef092e55952eddd452903cce68c48905e. 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/NL4VT2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeaf86bfdefccf7cc619a46d61af65cdddc095e5c6fea40798906f6cdede8c78. 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/NOG841907100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38936f08ba0b45a79738968f1c05a01d8bf4ab73b40ec625403bf4c1bec4f56f. 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/NLZ542300499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21837a5e013a6fe80451bf0745330a85c7a927e15f2b2745d308c266974649fb. 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/NLZ542300500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd265d174a0b77bb923c7e41bc02af5537d95647de3ba3a5efbdce7771c1818e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NL4VT2100246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129360ad4c97973195a63a61bebc89f09c922108fd396e91403b24ceadaeeb02. 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/NL4VT2100247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a273be41e975f8ec9db57daefbc121e78fb640849deea4ea7eed95ee1bf9df. 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/GB2LD1700090.