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 0x174ae1568e570b0661851e910bffab879bcc5bc70cb42dcc5e263dcba504f425. 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/53208382-7b8b-47d3-b137-26f85605287b.json and https://artists.proofprofile.net/proofs/artist/53208382-7b8b-47d3-b137-26f85605287b.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 0xdc7fdd37458cbe6ab6596a2a0770719fe517048fbc7352408a3b9641fdece9b1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRX762036263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a31c5b64cd856d43477c3721369bc6dc0da7b5999590bd1525afc72d445fa46. 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/FRX762036264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc9c1341a6528e58113bd9712cc65fb2c936991fcf73e1613be875cb379bbe1. 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/FRX762036265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15261a5f9d5f4d7ae30b08de346aa364e0423a86751670b09ae4fc2b65739547. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRS182071899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d738e254fde008b298e4e09ec5053d762244dea66ae6aa525738031d18b0589. 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/FRS182071900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc756a1c872a0b7e52b2c260bf3d23a9722f119654fc9dfb9b0a4c7c747e2f6cd. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/FRX282126355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913dbdce215bbbbfa070c3c4d14acc484194597f1a813a39f6afe7adc5010354. 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/FRX282185027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3443f7a650bac176c99a08bd41b06e54bfb0b30a5ed8f5a54dd4762350dc11dc. 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/FR2X42264398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc688a3cf0f09a9661ff6fbb96fd071e2f52833f25fb6645feeb8c1342cd37c84. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/FR96X2203098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015894d6b1b3484fbb79cd3589ee88cf852126edf6cbdb209448c3da9f2047f6. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FRX762256431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126efc2ec49423948c6a4b4d133ac41a7431a1887cffcac198af2f232d269474. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/DGA062287548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b66e255af24279e6191782d558a5905c5bde143b56ea602d2a115787fd3cbed. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/FR59R2329150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a9017ec7e81ac45f15fb82b0f300f5867935b874548b08d4b3d390d8fbed573. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/FR96X2309585.
hedgehog (never pour my heart out again)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b2a6b7462f5109aafbf1f785e0434ae95cc3c3c4f3f268aaa4104f16d5bc8a. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/FRX452370829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871ce1a2e1645a4708ae0714962d6555a0255e303f61bebeeffa5f44454fd2fc. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/DGA052334191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6965586afe8100c459d1d29520748b6b45f3c6985422dae8b9419bd522de09. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DGA082379716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9c6aa296cef9d3e0879e73fdcebe7a6bb4d2746684174a921b524832144186. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/DGA092374925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491265fffd3261cb0553d4e422cd8d94da413294f12fd078651b3d4ec8437cb3. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DGA092345465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80fc12385717603f1759cb56415f0ecc52a7550c6ab6820085ac536078cdf2b. 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/DGA0H2387672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1caf5e725ae0cc971245ac98cffeb86eee95c9f4453767ae89986258a13972f. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/DGA0P2356494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360a6e6b8c9f9b29e14d0042b6c53651a3f8d460ba3e62c83940284ec7f03fc8. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/FR59R2447038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3590c1861211db619b51641d939d56c9dbd423843d36ea4c06e80b097ec3d9fa. 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/FRX762425934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a93e704955ecb800043a6b29f0961f686183d33de1e2df2bfbd864118ce894. 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/DGA052440003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692963d324a9eedddaddbd5a30db9f1e58dbdcc22cf2a594ca47b94139dd7c54. 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/DGA072455615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac395d1ded9565168c74860d16bbbea3b1d4b3deee6d657c005f59537f11178. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DGA0R2429877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98846a81abcb9a19f589577389744f41f96c1c335fe26edf4c42b80a647d567. 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/DGA0M2460507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360a6e6b8c9f9b29e14d0042b6c53651a3f8d460ba3e62c83940284ec7f03fc8. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/FR59R2447038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3590c1861211db619b51641d939d56c9dbd423843d36ea4c06e80b097ec3d9fa. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FRX762425934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a93e704955ecb800043a6b29f0961f686183d33de1e2df2bfbd864118ce894. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DGA052440003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0b511976c8914735ba70d9f384bc8e99913b1e86e14cfc827ef2d091637f77. 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/FR96X2583141.