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 0x38773873c6b548e880559160d5a3afa46363d05b2ea6ec27cd1c862d6fcb94ac. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c11ee88c-c67d-4617-b0de-67b6e5dbbc32.json and https://artists.proofprofile.net/proofs/artist/c11ee88c-c67d-4617-b0de-67b6e5dbbc32.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Surkilla Boyz (Freestyle) [feat. Murder, Wester & Ddk]
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 0x4589bcde5af40521d1ead3073886873bd849d78c859f29c71fd01e6c8a5315d7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZW9K2320195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57910246c539886d8cef43f5b2b9e8bd96fff8061444ee3afffcc4bac97aeb85. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZTB62549386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c1e57d3bc7be76c7c3ce7a82ac29c42829597545a74eeb4b0d24f41af0a32c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZTB62596973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0d4099cf48c2c80726e3412c7c732d7c921e077def5d505a61385c842a6317. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZTB62594651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5050129e1c0339658b95390b8ec697355b0a39a86ae88ea2a560ee998dabcb63. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZTB62549388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d12b434a8687cfe7bad0894f4a63025baf1593c531995b6bb365574aa57f32. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZWFT2586494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00cc18e6ceab276b7420111e1d38c297c503654f73932cab0bf95055bea0ec6e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZWFT2595742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d7f57e2c903ca0311d0827601e21ca82edaaf3676862d480ea5580baaf5a6e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZWFU2539097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4283e9a6467b96d5ae995e77ef9cf9a7ed251da2f3a4863070f8c27a8afdf40. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QZWFW2558996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b09bc00c3a4c057036c0587e5b65d7696e7c218bc37c57d3bae73db20230efa. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZWFW2585272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272e27660f54868a414e984083ad2fde4a38f315e738fd3bb40af9be2edeb6ed. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:44:48Z), 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/QZWFX2593275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c3152e5df03531b98bfa4c105a8db9f5c8d530ab4493a2914741e15669b556. Chain 2 (Bitcoin): anchored in block 957791 (2026-07-13T02:46:19Z), 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/QZZ772512670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x122f3256f3559223d49c1c32f5ab05df7195aa275946c5e0fdd9937dfd5611e7. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZZ792527271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4431b73d1947a9e0221f2e72f5f037e0c777189bad36441519771ceae874a3be. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZZ7M2500000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36eaa9e62690d1fa6c885bebbc7b84a892c7ab84bb0032b716f78051afa25b1. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZZ7M2500002.