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 0xfd38fb3c6486687b29fa09bf0db107fee8f048e5977428b15670701c5ad26450. 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/46bb0c4f-04f6-46c8-912c-b7e77137cae8.json and https://artists.proofprofile.net/proofs/artist/46bb0c4f-04f6-46c8-912c-b7e77137cae8.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 0x812d3a4bcbf97e15644f33e3ac43cd37ea2d565de59eb6b50e2bc176e52429f0. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/ESA011927539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5f7416e4aee8e61054bc21602b7248275dfa2292961111e6def965b3ff0f79. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/ESA011927540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187272981d5b1a8e99f81acbae8ce67166638efd45e9eea17ba51cd707f9a461. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/ESA011927545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3aa2e8409515c2e6fd1b7b371b0817407ba96f921f910b6f95d6d9ccffb2495. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ESA011927541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacaa7da1c90c3819888c96778f2fc7043eb90c85fc0445a3717bae6a643eb717. 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/ESA011990501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c6a2f7820ed586d63bd5a2c3f41671f7f71ffc96c4834fbb9ed1d2fca17564. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/ESA011964755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacaa7da1c90c3819888c96778f2fc7043eb90c85fc0445a3717bae6a643eb717. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ESA011990501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca1edd51a29a20a9dae2aa349f2848a254aeb9036a5c68bcb939f325cdb80d8. 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/QM6MZ2065486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95000ca0c8d609f23aaed5d281a94345dc3cbc5d3a1f136ac4925e10b574ea27. 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/QMBZ92092464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0423fc4d38c126f163969c4b66561e832ab01cafea47d768fc90273edec53146. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QM6N22135348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517d5e34b67e7ba472c56d886c642fac4f3289ee1a57e3bc4f85b1cd233d7089. 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/QM7282109824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0277313ac9b0604bd219e3de1bff94d912aecb71a63611593366b667acd7a259. 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/QMFME2137066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72cd865d28c3ad0507f1379e52f2a46a55e7984dcda2aaeac10382c9d02c5be. 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/UYB282269000.
Leïti Sene x Trueno - 5:05 pm (Official Video)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf484bbedb520aa1d6e4d3c6c4e7690a62bb2cc5190bd14d785e3df3772ab4308. 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/UYB282269001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f4105178b626f2297aa142060d39c178f967f1f53c080837621ee9810498d7. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/UYB282269048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34590857782854def564750dedc19a483ada59d24acf43b6bc944be088a502a. 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/QM6P42321057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5289ac1e472489f18ae3dbb8750508918059311e486caaec4282ef33adbc6e3. 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/QM4TX2082046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34590857782854def564750dedc19a483ada59d24acf43b6bc944be088a502a. 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/QM6P42321057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4a99d46899896916ddf030743338a2b76cb2a07c2a3a77358778f64cd0f2f3. 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/ES5062205603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625e0d33c1c498f5359237dda84122bc0ff18f874154ea3bd8c47ec52d1dde81. 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/USSD12300755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338c8c145a84a050e327d4946c528e1b4c388331aa784d9036ac2f98a7006419. 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/ES71G2151367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a25516bf3622f786c8a34d4a38c29c8cbe37c8d36a25a4fc619979d642002a3. 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/ES71G2030718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f835d37bf59614cb3ffb4d3077767421de977fcd0725f63a574121fe7015bb. 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/QM6P42203476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756156e3c1afb8099b1a5dafc06c6c80bf8090acf9d51d97b12e30b3ece02bc2. 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/QM6N22042093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76b0fcce22711f0fce47c3b7f059fe15a6d4a8eb724fbd96f67e09fac6bcd24. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:23:28Z), 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/ES71G1923670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7253bc4d4a2a784842c63dfb0744aaecf7ba793eed56fab193bac45e0dc252. 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/QM4TX2167080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde9d8a6fb4a95330cfe817b26233f310d00f9f99f2038333a5cfd0f5df7c42ab. 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/QZGLM2485533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27983d68826651da4c7c7d6d3c29cccc585c0aa89604c11075ada17bd5b89db. 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/ZZOPM2225885.