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 0xc76583d68ef8102d04fb27207fdfcaa4bb6271c0b09f1b14c78075c2f0094640. 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/11d0e592-adc3-4548-8961-222fb78243fc.json and https://artists.proofprofile.net/proofs/artist/11d0e592-adc3-4548-8961-222fb78243fc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dare (feat. Ana & Maye Osorio) [Remixes] - EP
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 0x9668564ea0963a6679887373b76c0906ab99f49d0eadd0aeef3331051a2551c3. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/QMHUY1554246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00a28f511265a593061fa2f617792b8b7fb3f45b90660beee1dfabd5614a92f. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QMBZ92275428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3a1b395f1cf1342bcbb748f8411b6ae4d90ed29a91b838c9a9dfa996e48600. 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/MXF012300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169ba2262f67ec3c7a126ec54c4eae51aca229a9278d10d10ece610011bf0e48. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZTV32305138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52709cb2ae7915ba14a8ca7f9d65058ed8f26c75dd8a50c0c190a47b4d49cb6e. 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/ES5022302606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1d85323e0af5fdcccea8f02c3e626006eff5ab7a496c86d122e99106e6f310. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ES5022400274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52709cb2ae7915ba14a8ca7f9d65058ed8f26c75dd8a50c0c190a47b4d49cb6e. 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/ES5022302606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6252e74be11f284867c77c87ca031a1c0e27bfb603aee38cf4d2bcc388b1ed6a. 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/ES5022400169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91ce08567efe7f8ecd39568c92dd4e5281ed696f691683bf9231703f66a95e0. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/ES5022400957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1419e801efacc8319d3b419fd81eaf014cbe32f00e294ae8027b2d49f3a2737. 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/ES5022401192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168f7a69a54bedc83256a641ecff4d42ca425cede2adf52ce5a17c6281ff68f2. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/ES5022401193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0d6cac5c41548029f9819e9bb3c962704508850926bd76a2e8a9af0eec14fd. 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/QZGLM2435414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69830e1afd18c0be8ed4887cedd736b1457c3ceadcc8698a01ef7833c3f9d2f2. 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/ITLCJ2100439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2826afea569aba7581fc8754ffab5f84b151962ced20234aad4eee006a97211b. 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/DEX042400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb98f1b6beb3dd911fef3f6affd403308bcd0d05f4d920adaf6f11f4b202ce1. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/DEX042400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7c5a2f7f3a8388623f31221aca9c35a3ca1d0b59775106f2cc65cf6e540ec5. 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/US83Z2325025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e7dd26ad43b5bc0648ee7b08db3479fddc74b526146c1a4cb4052f6fda72c5. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZWDD2571087.