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 0xc053c4507db34e74c6853e311b35867bde99bb24ecce21b48c4ef467bb8924e5. 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/847d4a83-5720-4a2a-85b9-377c4f99760a.json and https://artists.proofprofile.net/proofs/artist/847d4a83-5720-4a2a-85b9-377c4f99760a.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 0x9771c7de02a19a97897166d01706b7301b51fa768e1ca498e81def240f8eeae6. 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/DEEC33501002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac04ca056673a9726930bc862b065d6eb99252bf17d94d8b16a7cd4fc9f55c4b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/US83Z1902052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ef54f1e70e1ee7aff2bd79b6d0473bf688db53afa5a5c57194b15d2bef057a. 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/US83Z1902055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb206439f71a9eb20729bb7b245a735fc6dc510b5e7ffeae1db3db9fde581b9ec. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/US83Z1902053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd411fbb43c1bcffea92f5129fe2c3d7e58414e94f3582ed0f660ceff88427659. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/DEEC33500772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c120d78f0da5fa82667e7daa7cc6e7fda939cc71a64f731deb12e73c76d60d9. 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/DEWN71700251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11df372ceff9671bd3afa918cede5616efca131613f09c3c91a37267973e9113. 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/ES35G1200491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffdf8dc7d8ba0e5a86d50e7399199c682eeae1d0affefd8e38a10240313939b6. 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/DEDH72300261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2abaa3e8165e6d5332880c3387c4fb487f8bede5289f35a4e81ce53c14134bc3. 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/DEEC33501420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496cd378a4900f7cc90dcc17f620e6492957ebcc25426c2c5454f9ad832587b8. 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/DEEC33501370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307d9cff6bcadf799801f0ec324d4818fcf16c9d766d570fad85c11ea7b99ea8. 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/DEU672400080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2bab28c5968a17ecab6615355f4a18c0255dcbdfef1ae4dfa851e02a03b8fc. 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/DEU672400082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec357584b23b35ee1b2ed665ecb7002e71deed7c4378ae4aae49670249eb2325. 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/PLE072418601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80e97faba247d3e59e040987e6fe4fc251d4e940575b6ef8fbe32fcc0b8e826. 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/PLE072418602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d70baac60b16eddb4822167162775eba46a038266db0d53737902ae125872d. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/DEEC33501151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2bd33f6c7dfc1fe00426b38234c5c63f4be43b70a2190b760ee77ca9474af6. 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/DEEC33500612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf95a1a0b19544e72476c596a9bbb356be4fa6028e59c331e0fbe943aa9cceb8. 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/DEEC33500613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fad8ee85df34856db09fdf40f48da4fc57bafef79738a05eb426289b24e7027. 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/DEEC33500615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13346add3098c2829aa9c60ba00402577c93d5513760656a0aee05fd1a7cc4fe. 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/DEU672102030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b8a037e688572f02b83ff2c37d4c5cee4640c14e870b1dde5155de6334a8b5. 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/DEU672100714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dddcd432a2be517efbfbba9644af05d61e429f76422132a1dad39a6a1d2dbc2. 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/DEEC33500097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d8e1eed437d48f7435e045dab2a495b2fc85365b31624963af6f250216e288. Chain 2 (Bitcoin): anchored in block 959138 (2026-07-22T14:10:55Z), 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/DEU672002933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8250a168ba3958d893adc33fcc7c65e9b51c56cd8a082f155b3d5514f85b7c45. 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/DEU672002934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c15d1c6e5df30634cb799b5c39d514232f7047ba19a761fc152cbcafa51724. 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/GBWUL2068505.
Antiheroe - Rebolledo´s Cuco Heroe For Ever Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283915c6ef978ec1e675a755e4cf47fc68976fa6f14d0c296c09939ed5df5e2f. 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/DEWN71700183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a3bfad69daa6e339ed756d43b3e4003b50c113c35443a65dc605e4bec9d872. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/DEY471820955.