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 0x263e92360b6b3ee43eadf51645c89a5d76b7a463e1de3a61679d4ab65f47e669. 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/51d553e6-fc41-4122-b990-d6bf05ca84ad.json and https://artists.proofprofile.net/proofs/artist/51d553e6-fc41-4122-b990-d6bf05ca84ad.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 0x47cf528c1755c8e4fd7db3b75352136c3ad1e04fa2b59606c5f5c87e1a5a05b7. 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/QZTB42432011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9726ece15aa83f30b0010e620674c02da1ea42bb21430e69c7de0f94a9acf8ff. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QZTAY2483476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2dba31f774192fd1a9313d74ee7bac101f8b19a085ab996ef58fc8c8519b53. 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/QZK6Q2434469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8f8bf114e636a286c538d43b79eed63b4f9748571c3c7aa74a7b3897de9a10. 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/QZWFP2306667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743938254325f1db6749caf7ddd256c6d64a74012ac99a0da5051f97b1295df3. 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/QZTAX2387377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1535049c6ae3da0331395db92a2d37e011d85a6e39b18fd9dce5958454359a89. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZNWX2328442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8451ff99e2599d48e50d3710139c6066981155b7f5b28ad6893279531b21b0f. 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/QZK6M2309732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a9ab0efed27c6603a96efedbb0855146c5358fa2d3aba7364c3df1171b8227. 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/QZHN82353394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5903eb6fbc9a1cca692af9da7b27147b89d95daeac9ec81e57f0d164e9e6cfa. 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/QZDA52337062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ec82292cc5f75bede62634ff0128899da70b7660db7a799991db8f63b11627. 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/FR10S2399296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2ffb0c86e4b6172c474b27c497b0dc261ad204f61e5f14d3f7f54ec7a9a2a4. 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/QZSYP2212133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74682907b23a068b33356514d8edc44918d3b2a474ba50e54f310744cf693c3. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZNWS2248519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdac418239916e53f46a40a806728f32d1ae52c309ee22dcc62d8d3b625b97ca. 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/QZMER2221442.
Tomar Chaya X Megher Bhela X Chera Ghuri X Likhina Ar Toke Niye Kobita (lofi)
Tomar Chaya X Megher Bhela X Chera Ghuri X Likhina Ar Toke Niye Kobita - lofi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d330b8e2be2d00046a1a12734c45030ea64139e7d0437605b4db707b040f072. 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/QZMER2291471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9a0927a0cb61b98abc16c30e07b4c9c29985507a086061f81ed8199e29148b. 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/QZS7J2264421.
Tomar Chaya X Likhi Na Ar Toke Niye Kobita (Lofi)
Tomar Chaya X Likhi Na Ar Toke Niye Kobita - Lofi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7d9510a8c5883476babc5bdaaa4ad6f9af7d78a0e1d66d04b8bf4f6b28bcd6. 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/QZES82292393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c09953603768652a96f3978a7a4e526b3383090ddccc0d328c31200831fc153. 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/QZES82241996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623a4edfc8d4865f7978b799e3c22b237462376a094053f3c3b497a3dac592a7. 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/QZES62216007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0d0bb65bb0f8c4c193470101d0002f84643f5e042b7594484b1c2deb2ad627. 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/SE6HN2207154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2896777b25126e0257cf894b264433461faf354888fbe4d0ca84b7cbe49734. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/QZDA52289604.
Tomar Chaya (Ahmed Shakib & Tasbir Wolvez Lofi Remix)
Tomar Chaya - Ahmed Shakib & Tasbir Wolvez Lofi Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20af9644a01fc9d88f5dbc1c606f2a0d5a7e919275eb546af3dac93c0ec50c8d. 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/QZFZ42289591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003ae7a7cf8cfbd233c2d3cbd3bcc2fea09208c56c50528ea9c1dba804695960. 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/QZFYX2228876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d50bd2bb4d9c6f6e049163c3140e9438eec909bf09313b38ee22b270fd9f34. 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/QZPLS2111030.
Likhi Na Ar Toke Niye Kobita (Lofi Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63904cb96998bbf6ce436412568fb40ff55ccc12ae57611961eee86f563ff99c. 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/QZNWW2136318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52bd4b5f6cec141215de6a7b6975d4fdf0504dfd7e0d65a022d0b3456df23a7d. 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/QZNWT2174627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd355f573cf5061b7c22525ec500882624d7f38fbcd8a17e839fdc0d891019f97. 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/FRX762167414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076991dd22a78bf3be4f9f805c26b04859c9080f28c1c6566f93baea52374ac6. 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/QZNWS2135940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e80b1adff929d56ab3de485ab9d3457d797d61058062359a910e2ce24dade85. 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/QZMER2187024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078a9798dad66abce5a5f48fcb050961178dfba40c89f2cf1d2d8bc5b6acb036. 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/QZMEP2141849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a588de7825ed4e48b1690674f6b655b74792f3b87b065ebdac50dd6ba1ac7e. 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/QZK6F2157702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1ab44ba9f8af33c52f272e98e3b33679a03dd21eb375c3f1448e4f4f4877d1. 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/QZKUS2147100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92c3eeb23d6cbe8830548d25a49428a0ba2038be4808ef799ff3a2610278062. 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/QZK6P2112876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1041e6e076bd28e1c7ed47b8f62338a1e3145b16fcfdb796eda0727946fcecaf. 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/QZK6G2175719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3434c4aff32577495f49e0d1512fdd589e298cde368979f1b460a56fb748f5. 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/QZK6J2148906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a996ee340211341d1341d4b3773fb9033fd9cf3f0561c8c1df4f2607d536dc. 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/QZK6K2167225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437b46eb6d6d0a6285187fe8c77de0ff335740269823dcefb467f791ee866429. 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/QZK6K2121541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6663f7cbbb32425f6090d22cf9f2b8471f9c4d348d0a45abbd57a5e2e9ce5617. 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/QZHN82180767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c31173690d3964b898d20290410e8cc1e88e6c4d1ed5aa76f5ebbdb2a19ec7. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/USLZJ2046235.