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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9234b08dea421e543b28ecfcd0d54f4bb78c31fbda5822a327743122a4edcc. 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/9f58c81e-b6a5-47d0-a856-16e5c41f1ecc.json and https://artists.proofprofile.net/proofs/artist/9f58c81e-b6a5-47d0-a856-16e5c41f1ecc.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14d164ef5887cb0171f2935f2204d9619849d404d2aef46e00599a36c87c565. 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/TCAJC2432449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8369d6175684cb299cefa453e9055e38c6aed336d909374304319a585b0f02. 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/TCAIW2406923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc405b0040c3676b740bb8673877992b00e9d0b1ccacdc968e1fea077e4182e3f. 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/TCAIP2465323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8606b2430b0417a20c44906c958d7e4c6ff5666be92c6030ae29270c11ab48ab. 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/TCAIL2478533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179b1c2bb93146b803a347c4a0892491fd73bf802a444488440136bdffc8d286. 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/TCAHI2329718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f5b1f326a8487e7639a7e0e71c95fe694b72df74112c42d55c837a5b8ff5da. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCAHF2356267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ded84b2c81736ebfa16695991765cbc9329f0912e0be2de1a2045ee1224e44a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZWDW2221764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee305dbf8b1b15696bc5ff4a5156f3b581c6a19f1581ec1f1b5a3f7a8d4d2a1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZS7J2299417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e6f544f5d58a630a1c6e6432dc7de040a18c95ecef7171f1a84395f039628c. 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/QZS7J2201296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea09786af53f8fe3873fcd4d88c77e1429d595732abba82084489eb0c5410a31. 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/QZS8H2102817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28933732dda1a6c15c3ce53874ac7999396a7330b2cd4a12abba6bbfd3a4179. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZQAY2251943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c57697705101df39155ed5d0d0ed6344f23582c9dabb037929b3517902cca10. 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/QZQAY2294200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72b87e7facbdbcef72175e12db764c433bee003c0c038a79a5687cc545ef08b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZQAY2288424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167410fcf8c757eadf2b69e6471034c56ccce75b0117d47dcad8ea017c8835ac. 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/QZQAY2211725.
A Mero Hajur 4 (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7368fb7c0e23bf25dba1951a098ca04c5391ba2748de7f8b5be63670b5198f54. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NP5GY0912752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f6b4e4b499a77a31b4eebe35bfc287738441500d2b9254d0325048da1cc037. 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/NP5GY0912743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1fcf1209921597a1b99f07ea36b7e3672f5990167c5796f878a5cddac5d72fb. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NP5GY0912753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31c944f6504ec52126e654012a2bc742b9699799e3e5329ef0d577856850f57. 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/NP5GY0912709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eceadaad9430a67f9f03151d6efc91210c4c0868c2ee92b3aa1d34a98694349. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NP5GY0912722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f76397a96f9670f3c797275f03cc595835b98fab01f0ea457a753015cceed5. 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/NP5GY0912730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7656ca003ee462f3531e6c9cac71015acef186d9444cecaf34e6cf563f1fc4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZQAY2237419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1f72592898a544e3f732f951c19f444e1b981a44efb35d382184e4e3a67d88. 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/QZQAY2295506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0feb7cea2478a1ce89ba66639ec5163c06d167e25a71c551e74b64add7da1646. 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/QZQAY2288577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8b34a3d5b660b14656c6aa6db956f9187a2214c924a618e25ee60d563df7d0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZQAY2292919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae054fe347f135ce44a9384b18aa972c6e35d93503f72fc31dc9cdc9c7d55713. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZQAY2251072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c8b9889f8521c297d87382df74316c3167d5978e4a3577e15282dd00dd0518. 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/QZQAY2244848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db3101c0954fc3a989f6391ceb67f036f713170b41edf47e9197e56d0b4a7e4. 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/QZQAY2217307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecfa6723391fc0839fba15cbdc9d6d4c7776e2b01eaa181d17406fa3c4634d87. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QZQAY2212433.
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 0x8b0f5fff6430ca83c101dd9d036b0093c3e10f67afb4032ecfc3adee66ea710c. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/QZQAY2265828.