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 0x1c49abdb86939c32ef869231c1198b6f1dbf3cbbc64d6935a4f2821b61e0a83b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/779bd7d5-049c-41f4-ad3c-e46a78fa32ba.json and https://artists.proofprofile.net/proofs/artist/779bd7d5-049c-41f4-ad3c-e46a78fa32ba.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 0x2b7911ce12171331b0c07f3943d02d23b8ecfbdc1de6c7c8f8778fba1a7f937c. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:52:23Z), 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/QZHN92069427.
Sequencia da Botação x Perere** Assanhada
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e460ee12abb71058b6c835d28fc64f147287874cc3e0a8f805d676fad5dd354. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZK6L2072710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3bd1f671d22e1d87db622b567fcddc15545ca6ba05054e931ef53e433509435. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:06:47Z), 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/QZHN42077462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a7d4416778960bdaf514b40435ddc2677b0b9c1c7675ea3a26cd3972699522. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZW9K2401329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734f116a2996cf93a644732bb19ae0c948cebeacce789f5451f268d795ce456d. Chain 2 (Bitcoin): anchored in block 957523 (2026-07-11T04:55:40Z), 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/QZES62137451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994e45db63a37364cee9b959a431c106b0483207a9f98513ecf05edc78824112. 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/QZW9K2471547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06e3c0ec82f8522ffc14328459376f0d9cdf1ab5a8b7b52324bc6483f503399. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/QZDA62049218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7ab61b870e0574f1512ff13aafa68e4ae2d1440d08fd4d79dff4b2ea1b588a. 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/QZDA62050287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2e0a54da492a3ab88c2cc70984b6e327a60e8be97c64342320bb7fe1201e6e. 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/QZK6H2154430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9031b8f334e5963925614cb2085def4c24f26a21e59dcca00623bc9c332ccd5d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZW9N2205881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a14282335801b17ace040d45787e7655606b3c3e01cedf41618b66334a7986e. 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/US7VG2380882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c19e9a360a1ed39adbaaa74b8a5573f357f8232da270211f3d438bd43aeec8. 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/QZGLM2312098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed44eec596f9d1ab76e534ae444f23befb50eab761bd62aa19f20dc6cd21e1f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZNJZ2336487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09b332ddd8cb92e95828aec7bf6b3a9181f24d1091d5ca3f2e5f8e2f4f2d304. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZGLS2449267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b788b62eaa35ed8a1d506d66cd419a539151e228a3a8f5baf1af007e371fa45. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZTRX2444698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c2bd89dbcd8164dfb5a3c47783c0005f038428591e3d1b100d1ee85bb3787d. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZWV32462424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe8c8d04b30d5e8a6aa06f49cf1940be2eb95b216afa878d9c05503dcb08f27. 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/QZWV32445748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1984ba97e48570d58e6d10b04d76ce27e4e6b11c55da033bf5d3d3d258bd61. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QZZ8A2456516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbeab5828010ca610c5ddeec526f214d303db42909ba92aee6028bc63ac6704d. 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/QZZ8A2451831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75a334eb63ae304b6ae9860b4fafdf549549de8f1eed5c85f64944816d3a45f. 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/BRSVB2400245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e09400fc11d3ce7530e1f097605f59459ddd2f0fd33f1b656eddb17700f1e8. 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/QZZ8B2499843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeddb26c03ac47cd39c8b4982e0031bce2e0a68299681c028c1de6389f2218c8f. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:17:54Z), 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/GBRKQ2525090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd56f55db0b788c1ead3e768c85431d11f4619d810a451e530f2729666524b2. 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/QZZ8A2563530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b73c386a7aa8c191997f9853b74c8011d45de8f11b5915fe163a0eefed7e610. 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/QZWDE2421420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91e1cd9421f0d9b30f51b307050dd0ae2bfe7bb4ca5aeaa02bc06ec9c93cb84. 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/QZNJX2314814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd63024bb86d6a5340c22fd1697d6e428fe661e3c601decdf27006be0aeae75. 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/QZW9M2281722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16716d9e07ce3a679726023aa156cc455735b3741b3ac9e9815c5af2eda87f02. 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/USCGJ2073952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356ff41cc4636fb72a4232d2e78d4ce53bfeb48c9947ec0734c6e4e297299c39. 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/BCNWM2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef41581bf72b95be409da1aa463d09154e753a0c3c3249eb97590b1a952c7193. 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/BCNWM2100176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9729ade52918d69e50ca455fa7ad107813241e0b35abb3a8b9bf1bb74dae61d9. 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/BCNWM2100089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39df06a651eb27005635554f1c41630c89e74aa47b6dbf61cbaa94f289521f4c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNJY2328365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a21a6f2771e247471654234415aeac0c794d20720f89e4f6b97f3929a8e8a2. 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/QZWV32419167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1bdad5fd677c38d27207afe43dabb9cf1bc8f52919f1453981aba3f19adf3f. 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/QZMZ92344909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb0aa3159e0225f4cd5bf0d608d4dd6c72f3f8384991e4a7051c0247dbface0. 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/QZMZ92344910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a9b98d5909513b4743cdd3d5a4f917efc7376b33fc6980603bf85deb03ba10. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/BC8182300214.
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