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 0x2c6b306331fcbf75825d2ba57ec1cb48601a6e57a00d6038a3a65f349efd5928. 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/209ee342-989b-4278-880d-d2f2efae7c49.json and https://artists.proofprofile.net/proofs/artist/209ee342-989b-4278-880d-d2f2efae7c49.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 0x4b8513cea54cd03f088bcabeced5fa5a5d49b234d2f4579bdf062b33ce333916. 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/BX3WU2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd2655fe7e364ed16fb2465a280a5c27d97a1def539cfde32626c50c35cc807. 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/BR9X11300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bdc8a93b32e94525cc13aeeac029060daf9747e3b6443baefc53b7e541fc0eb. 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/BXIW81900171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac296e005b9d648310b986fb4fab78757b66394181470cebbc8ccc5fbda119eb. 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/BXIW81900172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d624d651d8e6a37c389ce591299d29bae49fff6595ae8c8f68c99fe2372d6c. 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/BXIW81900173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83fb365a05dc8cd47b4995668e8125ac0eae4b03c57d36086495030cdd6c44ed. 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/BXIW81900090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be68f5dd92b103606a6c82803ae660087b3ac2d4afe5444e23854e6bf05554d. 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/BXIW81900175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b785ab3f0eda33d68790ce314c6fe0712dca74bb76d9d977cbf1098a3a9374. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:17:13Z), 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/BXIW81900092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c5e253f77ae7700f80bcf3c741f8c79ea73e1ad72f574494d8f300ba1a5d8e. 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/BXIW81900079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7e095dfcdd82c10c32d308af4b34c6dd96af97578410fe18b65aa0ef46a65e. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/BXIW81900132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae264e8328af1db05823ecfc9d4fc1f3d3af7096822e8a30c0e1134f6b6d0db. 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/BXIW81900080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a2091aaec36a6d733c64b9ba76f10efd919847a0b90be326fa99d0603a9783. 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/BXIW81900082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b71d01591baf997ed2b884b4624c043e91cc2478cd327a19b288f423938f1a7. 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/BXIW81900084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8911e20243ff672f45f5185a260a6d320f16d4f280d2bdc9f1fb9dd310053c8. 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/BXIW81900085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca46f46542598d10621ac854f2c02cb2a9b048707292677da282ba133d331a33. 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/BXIW81900113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc1331912d8a6d42be91124fb41a4887cf38c363da4f2344cbdebd4481dcf5a. 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/BXIW81900176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53ed65c514e76d8b4dc7588f3ba5a63c45b551a863f0a8f5548526eb78be794. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/BXIW81900086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df25904763ca775af04b7dc95abb98094e957e460a7b93a665b8ad652501b81. 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/BXIW81900169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5240e77442afe3f50ef65addc3c52334b6bcb46aea75e0e97550e791d1f774e. 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/BXIW81900100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f2d6206ad50eab70fe37f99e3d4f052f5c1337a435a9f220ffcca979fb7043. 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/BXIW81900102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb519aab1f5f5d04cfbefdfd3d92b767650772be1ca1c2051e0f88ecc19a0acd. 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/BXIW81900103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9f541eae2ee7407b654c97db8a762d9878ae1a29d617678e84443fffb2412d. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:58:57Z), 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/BXIW81900104.
Pout Pourri (A Ideia É Forte / Paz no Coração / Sem Droga, Sem Canhão) Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee2ca1d376aa6e6def319b6d880555152c82024ff944581186dac8e6a26a865. 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/BXIW81900105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99392872e6c184bc95ee927445bcc74b780c50887e9b699de54de72618c2831. 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/BXIW81900130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f41fd6dcdf85515eea53790443061a01f83c7db272e3ab173939c5fba9439bb. 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/BXIW81900136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7b4b2b7cc3c298386e1e82597332e2c42a6e7a51eae6f22ddcb2418281f38a. 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/BXIW81900137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f54d611d1c55aa035ba7e1bc5f4c7dc5513bcf52a76d1bb78327d75ca7ab663. 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/BXIW81900138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa548c3bdc7fc11016e72b6d856ab861cc571d0be9c82dfa871a74178b7cbb9e0. 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/BXIW81900140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0832f09351bd225b44973a3eca372c824ff0cb67bf2ba54a831a3e7d13f003d9. 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/BXIW81900143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c52a03a8a8a56fcca29e02d927cb8bb2bb15147dc471e90b8aaa6c84acf98fe. 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/BXIW81900144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb9b58b92b140ef2b46278148f5901e16f5df9ee9936f3586e713cdbc71c61a. 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/BXIW81900158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf709bfb2354a5334840bcb8fb011f69b280e51e3394b4bef34c01835a65ed7a. 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/BXIW81900147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089037a0b3b576593ef2018739fee27288ecdfc9553a2779b197a0bc463c24f3. 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/BXIW81900149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c120bde2f222d00fcde0849f95b65cc2324b0d75d63c5b8821cb92a104b3d3. 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/BXIW81900154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca8c5e6889aedf33da855ea628ee9497c850526cff5e3c97c3ece80a3ad094e. 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/BXQG92300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedbc3a7c1302dbe693d070ba4ffe00299eb8ccc021aa7184cac87c40160af8fe. 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/BRE9N0600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48fd668070a4bf7fb337fb92bc32946c49327325210bc027f4befd6bfdb90476. 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/BRE9N0600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf51dff89dbee731cc5d101292d33d0e1491dbc17978a4b12dfcbcbd69733cd. 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/BROIV2300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79d07c52d54cea5910cf33548770775fcb37b2f268b3cc003a1835d31d5aabe. 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/QZWDD2376064.