1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x2892e030ceb24a8530c93608c29fd2f979bf3e41f561237283fad4311faf96d9. 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/d08c1fc3-5876-415c-a202-c98df1ea3c56.json and https://artists.proofprofile.net/proofs/artist/d08c1fc3-5876-415c-a202-c98df1ea3c56.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 → block OTSBitcoinBlock must exist at that height 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 0xe7313f349c415b8b6d72ba58574f800dd45bf6001e6bedd938376a4b1b2536bb. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ES5590602549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b7f58ce17a9b6f5afa2832691536d5dae74bebd62d870cf8114d0e669d4375. 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/ES5590602552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7851dd19259f8532ea632ed3eb7e7ed64bbc501afe2299fc5facf1359c87f903. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:12:00Z), 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/ES5590500675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc36ec7d91e6cca9e128fbd08ce6f0c08733024afe52d1fb5f890f0fee29e7b4. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ES5590500678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9ec3f40f2bff71dbd09d51450fdb79f6df3444a96a38c96d01db7431a6cbf4. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ES5590500679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9272f0ac718e7a2f7d07ea3830eba3fcb30fada34622f9f6cb99e404b457b451. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ES5590500681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e02feed57175c20968973655d30db9eff09099930897e1d9d963cb6be5e9b2. 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/ES5590500682.
Laino Guztien Gainetik Sasi Guztien Azpitik
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9153889dcc9d837d8c73e473c28af1ef7ffb3e525205f262178a408aed776b72. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ES21A0800120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5e99469aa3e5d63a403e78e96267cbc1b44cdb49916ce30521483b5df16758. 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/ES21A0800123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b628e75bf00d6cefd90630c24d520d2dab576752ec8690afd842586f2b8465. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/ES21A0800134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe767c78ac934cb5920f9d079b5702552c3ae7d0fdcba40fea552bf1edafae5c6. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/ES21A0800126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0db06975c3b21aedfc693bd0b52cc7a92f7eb7464be7a2c231a77f12103a58. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:09:49Z), 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/ES21A1000127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dee92bf4e90d9c13a1b9272318e93473f9e6390d6184f0794a12babe2d73af7. 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/ES21A1000128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0eb1a0d1081bfb52ff88b1fe11f84cb5de4bd7122e086a34eadaf8c10ff9681. 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/ES21A1000132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8d7930f887c1fcfd5f21d89e0675233685489fd2f5cbb3b7b6ad3de7f28c3a. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:44:50Z), 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/ES21A1000133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c35b8b3b63c27e24c25ed3db992768125c6ebe5eb2c2ecb513ee867362e124. 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/ES21A1000134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b608b878b510de6e106d864574f586068c38fed4b627a4a362cf71c7ecc626. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/ES21A1000136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb267ac2262a6be89984256336466820f3d8baa715d18267e952ae21366a7c054. 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/ES21A1000137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1d49f1281757814b8cc73bf759649ac3a00e2bf49c5cd20a76070c7ad49a9c. 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/ES21A1000138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3ba3d6f909d8a612421c676ee3596100ee027eba3bd063d1e1c785b490d539. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ES71G1415524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83da947087bcb7f28d093d2d36ed0c3154d9d6e4005522a8d3cf14f7a605529. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES71G1633389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd8cd75e222c75f79257b02ef45f740438956351e32cc2e9a297588c6ef9cfb. 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/ES71G1633390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d851623be97588a8959e88ae81556a0e39efb53e89dbfe202a7c1c35537655. 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/ES71G1633391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8fccf543acb8be6c8676daf4cb0c5b7bc3a54d5eb0b8760b81c05a5e329c745. 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/ES71G1633392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ea24ee88f1f6cd89acd05173a0d104e94124c3cc4cfd98524f61bdb47bba0e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES71G1633393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc2e50206fbbac1f5d648c45491d3f535331531e9458d2a3a35a9fde91a7366. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES71G1633394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da347e97af387248de4bc0c64ddcc34d39497cf7544e6a73d4a36bac411671f. 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/ES71G1633395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31df08555c2b1eb4e840c2bd70858cfa7093eafb3e0f592fc7612844b99e112. 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/ES71G2056422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b1eff2b8d98937884d5017ffcd35eef1a14e848f77a9f25b43469da00e37d4. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ES71G2056426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e7bf501cdad2f12369878b334b86379d9712ed35beedfde3d876663f8ebcef. 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/ES71G2238497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52e7c3903004875703a15e2bdcbcf5619b583a84b0c9cfb4f401b560569dcbd. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:05:08Z), 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/ES71G2239007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727db2c6aa1f06227d1e61fd7e16c78983a31f444f181c08236c854ae4bc31c5. 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/QT2VB2479597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a45dc80c5dda06bd2fa1f6a4cfad78ae80fb4482cfbc0fb956184ff6e997522. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:37:50Z), 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/QT2VB2479596.
Bang Bang Txik Txiki Bang Bang (Sinfonikoa)
Bang Bang Txik Txiki Bang Bang - Sinfonikoa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0d8adfe34363174ec333647eec22f8bf25c8d391aa13faeaff2ebcacea4a0f. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/ESA012593836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6578117e97af012d2f704f6d6174886bb4d9f10d8968444278943b931d839f48. 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/ES8241659308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc34dce601ece1ced4d819270b239e7b759841ed79a70c906fd81f87f30b50e0. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/ES5590602543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7226f7823719344d97969ad4ab60d1e0bf147385a01833718a0a4e00035a2fa8. 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/ES5590602547.