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 0x725e4f24b3e0d03bd3dd0f1d564f4e518a166683523d44a3b0b1b628c2071824. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/33f7f1d0-ffca-4eb2-99ef-5519118f1cb7.json and https://artists.proofprofile.net/proofs/artist/33f7f1d0-ffca-4eb2-99ef-5519118f1cb7.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 0xc49287b38dd5a2725dd07b5fb9cf76449904f329574404361ce9d4fa4064ffb2. 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/GBEWA2200370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39989ac71ce7fd9c08ea618fc40c734234722050bfbb7d2e924bdfd06d30f1dd. 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/GBEWA2104900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53bd624c6a5ae92421c8e6c84c3771ac30bdf4d31d2a1bc4667715ada64a0c2. 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/NLF712300866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc584cb22c3de134f0a47401acada4e1f1a15414eaa527e63af3e9de93ebbb5. 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/CA5KR2294069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01564bd9a63b18e0e1da3693512ad74745068f226a85a6f8285d7426c12ce14. 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/USQX92201989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39989ac71ce7fd9c08ea618fc40c734234722050bfbb7d2e924bdfd06d30f1dd. 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/GBEWA2104900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2670ad2cff75e0a93f378b2e537ccb12ac144d4a09ff3877643d341064e2adcd. 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/GB2LD0901602.
New Blood (with Boy Matthews) - Codeko Remix
New Blood (with Boy Matthews) [Codeko Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38cdec0be36d5ff415e90e11551e1ac8a9b5949e474c60eff0af5d8f06e74a12. 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/USUM72117571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3adc4889fbf9b6a5c6fb80ac0cfb75d95d21c71876469e95555cdbd9a617d0. 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/QZHCR2300055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3adc4889fbf9b6a5c6fb80ac0cfb75d95d21c71876469e95555cdbd9a617d0. 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/QZHCR2300055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39989ac71ce7fd9c08ea618fc40c734234722050bfbb7d2e924bdfd06d30f1dd. 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/GBEWA2104900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53976299b206a9b44309413eeea8d3d6485dc85402b22640a0580152961f16e5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBKQU1511593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8960bf6dfbb1b4a52b3c8f16da6a93b625e4d5c48456f7bc8999c4f1e84daf4. 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/USAT21906432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc657a958888d3ae5e51e950c7cc66979c694f6cf5d3b0781abfa64d0dda42b98. 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/CYA112000485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf515c07bab89a24336224a65ba5f4f57e46cce3645dc0f06e094c343b72ac0bd. 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/QM24S2006310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb038b35a90393f9f9c7912ea0f2151c09dc7dd4e0fcda49c6eb063422bd3309b. 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/USUS12100721.
Lost In Dreams: 2022 Festival Compilation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0d95ff473d840b678b2964d71cae50170cb6fda3f435dfaa9864ae1e32e5ad. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/GBKQU2218092.
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