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 0x32f80dbe76b8c78621df2057668b54cc0045bfa745bb9e89c7ce111700d124d3. Chain 2 (Bitcoin): anchored in block 953616 (2026-06-14T08:58:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1b37affa-8749-4037-b8cb-3a41de55b32f.json and https://artists.proofprofile.net/proofs/artist/1b37affa-8749-4037-b8cb-3a41de55b32f.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 0xef4ee2a8b20bd0d57b97e639573ff60d1d8d69e09e1086aa44463423558e2970. 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/BR01Z1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553507c04b5ce36938974e1dd8d9e1bb4bccc2eaf8f04a8669943e6d71a65589. 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/BR01Z1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68141485a9f18dbdbbdbb093ca8c692ae66f192ddf6c128430792b90984433d8. 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/BR01Z1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5b9c1bc0ada23bae1ba03937e6c3c06e9ebd1798226274c629c5da014b6d52. 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/BR01Z1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4016e305cb37ddf6c85d4c6d1508d77e5228de38dd1d1c976943793102ab286f. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/BR01Z1800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10772d83dde30c6cae9042f9db2e918dff73158d15bb8f2900e4480803a7320f. 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/BR01Z1800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95df028f4f0d56bcdc8d4562e94066489bc45f885ba9d2fee9df62aca1f9bc3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BR01Z1800014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa0b35725fce9b5bb0103e9a47b132e115ef1b1e523517a34473ad5c8b0d4f8. 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/BR01Z1800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c9a1f6cc9dbf73c28e099b98a41317be7643aeff6755caeb312ac1af070b12. 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/BR01Z1800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24816b0a8eb5ce7347205cee36e81ee0c9bf7a292515711ba3151ca79e56650. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BR01Z1800019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf107129303de525d92df43dc3dab99926f7f50cb12f6ee75a37fe2c9a4f37c5d. 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/BR01Z1800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a5b827fb93074c174d8c8f9eb68d6f75cb7948546341656585556e67bc4f19. 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/BR01Z1800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349942b6782d74394edcb8a61387e96cb672f1d00f48693f7833bc95a4428be3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BRPUI2300183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6055fd6a4a384e4108c028936e51793ef719c8d74bf35e169216ae2d2a78ef89. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRPUI2300188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c8f8d0760e2c55e6b1b347d964df6c78d9ee1b557274b0c126e3ae42433300. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BRPUI2300190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe2c6554d7e9b04f932ee27d96f662b400e0a4b75bf1ed3946da81ee7f75837. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BRPUI2300182.
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 0x688dbe682cb9587b9df33c9ea33c91c6455301f738b2b7a621c570d4cf4dbeda. Chain 2 (Bitcoin): anchored in block 960339 (2026-07-31T03:13:37Z), 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/BRPUI2300180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbac70a0ff15bfcb093496d19168cdeaedc900a8ff776aeb7318d9ec4029a9c. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/BRPUI2300181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40179e8c1d5a39a00eb9f38e799c1b02711385b90c9e073238c6a607b5636849. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/BRPUI2300184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe1c68d7ee5a6d207326e95e8e06dda7807bc37ad5006ef20efc782777983c0. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/BRPUI2300185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73a06220654f5d7bcbb9a9d334553a30febbf60b7de27ba78ec264880988e35. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/BRPUI2300189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc80539a7c24428d47ce54ff0fdfa6808fc002662c44579e592ddf895017576. 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/BRRPL2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a020a961f7df379055ff032336135fa39e9aad002935262e1c431c8f7c14e9. 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/BRRPL1800046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21af4bdfec2709d4c88c4de7e3c94c63a50b94e3a0635bf0ca7d675a0c1580e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BXC3G1600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46133622d4dcaaa83f31879d5918ea716122ecd488a9da6df99d3c281a34789d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BXC3G1600011.
Marinheiro do Mar - Porto de Araújo No. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcedbae9b0eb821d5bfe0db709d6dc9bebfe70050008fd4d447e5409a5218180. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/BXC3G1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78523437022d96fa6ff5e708c1ba4e354b502148ad97e76a8dd5032c0405849e. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/BXC3G1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced586b2c681ec62b8d690c668604c3f8667cb3f4aee69949ff4129ff0fa5131. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/BXC3G1600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90758a3391c8b1df48070e3f64f4d57e358624d6be10bf4de7adacef0dcb6e1. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/BXC3G1600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323d78e1c3a12910caa4da768aee4f5319b31530deeb844c507cd040836f8642. 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/BXW6X2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67936e6d40eecbb8ed51a0f6c6f9d1d0c7a7276c67fd8c3b36069889f6f6cb90. 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/BXW6X2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeccafe3e152789f353ae0c9f49c759a060d55cfed61d961ccef98a36c43ebf27. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/BXW6X2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba2fba923e74d85aca5a525bc18473ed1ddaf5a5e6f2a5eb8d7751dfcabca72. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BXW6X2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ccc2f200a3e77db9e498afea615d80da2f96d2842cb00a7b2edbb7099215d9. 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/BXW6X2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a0b5892b052cd9c63bf775c7f63184d8278bd89bcf4d6aaccaa0909f5a5ed8. 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/BXW6X2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc539736ec352496e3e503ff6a3383c6e729baf1736acf70a526a027a763714ac. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRMGF1600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ea6809e93d7bdcd8b6e93ab95f6f53e2f8250571786ffddb6b8c1d528a1ec0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRMGF1600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9baad9675d82de7c1f048ce45b48532eb28abece044f0dce0650911957a89a59. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/BRMGF1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f7a85f06fb492d750d6a9063e78652a714d1f3c578fd2c753c37a2f63c3308. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/BRMGF1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ee227049c29110bc21fd778c0617115c25d475d73038e31f7ea4874951e201. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/BRMGF1600009.
O Jardineiro É Jesus e as Árveres Somos Nozes