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 0x1da49b882dc848dc417d21a2657dc012aa4a20f3097747d5726f37f96ee39449. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a42e43d5-1e85-4cea-b32e-e6a9b17ab37b.json and https://artists.proofprofile.net/proofs/artist/a42e43d5-1e85-4cea-b32e-e6a9b17ab37b.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 0x6160c5b7a4021ec4a535b5c0f9c59477dcf878f30ef7bd1d4425f4128dadf302. 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/KRA301700299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bb51a68dee03dcb2e2ecb1758a518ed1ddc6510f5952f4a147791201a6aa7d. 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/KRA301700300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3341dbf1a439cf770d1d1a9a5e8bb5e0f058e7d1326374d4892924d593b2fd99. 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/KRA302300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8545b22b4fe6f14afea1a9f47562d24e0157f2dc59a2344b34cfc14982533458. 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/KRA302300103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad0b45a0ae524e80154929a7c735ecde8178bee117761156b28a8477acdc89f. 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/KRA302200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b124d102fbac3b56763ead6c16c166f42f42e33baf61f2d45eb9a0316e514eb. 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/KRA302200014.
The Ghost Detective (Original Television Soundtrack), Pt. 6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf748a888d6ee6c41fd13739b2569eed864105174590324f34e61343c1d76a4f5. 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/KRA491800933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a550c4b76a709987a7ed1c9bd0af46b4e39bc8fbead7edf31e695b2722c694. 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/KRA491800934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf8eedabd5fe8ead5a8eccabd25990aa22208359f160c95005490d8bad28985b. 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/KRA301700336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1075d1ea44216f29ce22f3523528e10fac99c7a3103b7bbe6855882b5b673c. 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/KRA301700337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263df34c449529f811a6c5efc3b6827dc4318557e01430fbf5683f174d6374a5. 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/KRA302400133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2bf8d46fb2b97538943f8dd2cfd5b0d613d7a72fd8bcb73787b5c821505709a. 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/KRA302400134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff4af23227c02b4a98f84770ec07d564dde642864e0ce04886e8ce6f2460934. 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/KRA302200198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa3d3c53d488f68cbbbb0ea034508fe74f1e32f2b82ac2252bfd030e9a49500. 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/KRA302200273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea68829d96ae784d537cd422393cb6fff08e009297e9517d68666a3c88582405. 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/KRA491601069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0969d801da3eac154282f6f678f1e46443a39e87f27a866eba4dbf3eddaac43a. 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/KRA302400083.
Street Man Fighter Original Vol.4 (Crew Songs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36623ef5d814a4fd8c84cfcd97be4f220fe464c9fcc61d483e6b68da20575314. 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/KRA492200876.