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 0x41d25e7fdd77dac880b9679dc66ebd5314b9e72fce600fdaeaf98af8982d6ada. 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/b46a18c0-bc6e-49fb-ae07-bf6db9e92fb4.json and https://artists.proofprofile.net/proofs/artist/b46a18c0-bc6e-49fb-ae07-bf6db9e92fb4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
See The Sun (Big Time) [feat. Susie Ledge]
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 0x536cce7fb91b5dda455b47ae18cac4f52905dfcafaf680816bf902dd0a8ef196. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:31:45Z), 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/NLF711307244.
Siren (Armin van Buuren / Kill The Buzz Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1eca133b6692edc7724bb2abd6a52d4ea481f68de472c97446e99d3d7fe61fb. 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/NLF711312339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448d77a970b79c91d7072fe6c32c8154d255ffd8d5432287d394356dc5c7012c. 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/NLF711312340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049b084521a0da1acacee297f637076a3933de1c0999dceff34affcdb438a80b. 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/NLF711312337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dae9efaf5043f12242af600ca92d70cea01df2a765f9bed869c8aaefe0759bc. 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/NLF711312338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7fcdf3e36922fa8b869bc1e1e0899c49a740d59feac6ee12cfeda488cd16e7. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/NLF711402405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe996854007ebfd50023df9af843165d8463903dbc31648c70d5322fa08c4c63. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:25:20Z), 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/GBSXS1600096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833a00410b96a19ac3ba9c013c32d2cdc804dc1b00122357d566a84191be8664. 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/GBAAA1200951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4324d046aedd1b9c366aba650412e441499a2df42beec12b7acdeb6718482364. 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/GBHMU1300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408ae5b36bbaf796157fba2fd8b0e27c80bc46f307be8ff7485cd0f7aeab0a5c. 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/GBUM71806343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d022902a65745d8da7acbbc7bce66574f4b949d279f6dc0fd8ccd38696cd4b. 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/GBARL1300272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb033bb1a034988782fda903682f2375c9a91e743fa09247be90f5b9e905fcb2. 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/USRC11800025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81871cc09cc9c4c824f0b279b668f51ef72e14878ec6a54a58866f4108926d2. 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/GBUM71503898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687b1e9f098222ad42b9dbace3166c19453e0d7f81adada0f588cee9d2de2b20. 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/GBUM71505207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623cc74e3c8e1b3f7cbde8084ef2c6f2d736347a85fb31061d003d699b3afbe9. 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/USUM71414250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4324d046aedd1b9c366aba650412e441499a2df42beec12b7acdeb6718482364. 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/GBHMU1300104.
Sleeping With A Friend - Kat Krazy Radio Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b8256a49ecb7289cb3bc3022d7e238ee87fbe10b7613b20896f34ae7b4356d. 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/USUM71403487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df8e412a9b4a258d76987c64ad97423b242b6309c9e411934979721c591ac3c. 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/GBARL1801668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e410e1fdcb5be1cfdd501cf72beb6bf1c428784334c84c51f4d52ee5ed32cfc. 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/GBUM71502843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c70aee6fbbea5a82c612b738dc06e14391ef4c17a8243fd0e77a8a306738bfd. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/GBUM71505481.
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 0x85f4865bd5f4830ce200f8169e57f758f72ea6c1251ae59b87b6c3f38e8ce183. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/GBARL1301595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1944d8d42a28dad6aafbe217ad7ddf87146a4f9d5a3e089210223841258ed37. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBHMU1200175.