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 0x1df9ae7fa06f4ced5a23d41e125ce36528741ee22e2e21eb923a8acd32053dc7. 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/0e98e5db-2f95-4622-8a99-c270de09455e.json and https://artists.proofprofile.net/proofs/artist/0e98e5db-2f95-4622-8a99-c270de09455e.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 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 0xab2c02d7027f9bfaba11e3dbd2306471e6d684f02b25f3bc43fcfedafa576a3b. 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/QMDA72395756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a8a251d748b4cb31a88868fe3a4dfe6184dff58ae78806e8fb4dde397fb210. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/TRUM72400068.
Başka Bir Dünya Mümkün: Türkçe Alternatif
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a8a251d748b4cb31a88868fe3a4dfe6184dff58ae78806e8fb4dde397fb210. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/TRUM72400068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a8a251d748b4cb31a88868fe3a4dfe6184dff58ae78806e8fb4dde397fb210. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/TRUM72400068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a8a251d748b4cb31a88868fe3a4dfe6184dff58ae78806e8fb4dde397fb210. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/TRUM72400068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157754c7076f42f9effaf71b41fd10e49c6878d31b0732e6e6c1a5cfff57448f. 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/TR0062000146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c05c062e6822f34682def640bec701a57e002e93eb5cf3d02d0d5c2bc240367. 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/USDY41838644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969c53eaedda80c972c9934ecbd6d3a11a14a213946e98629e6a7ecf9140fe50. 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/QMDA62281848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0106aeae1430b4a97322c85defb9ff998a2599cbb09af828294582a4d920ab9e. 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/QMPKX1765702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88446c3057a7eef67e770c5274a4bc49f059387f69c1c108c09662e332d35f7. 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/USL4Q1822141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e32bd88b38d76426c570f5f2a121939ca49da928a1fd9d922c9f8aa3effaa44. 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/USL4Q1822142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8341b79e76a3ca4489dfc1c466d569da44a2bd7615adcde152fdabf0aba98b. 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/USL4Q1822143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d9328a42b79c09cab4b61d4a7442eb99015a62a6ded3058375324dbb8a48e7. 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/USL4Q1822144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421a7e65564f06f63f1b8587a571bb612c0949390dbed085cd6dd2afae2fc88c. 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/USL4Q1822145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6985db33a83721025c6abaa82df43e419cb8d1549fd707e4f66024299e13af9. 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/USL4Q1822146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49367679dcafd7a0913b5b2e0e790a8974f9ba7399bd15b411028a8b71089fac. 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/USL4Q1822147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5acfc257739ee3c2252c22d1aa168f52025df7beed195bd39be727ea2e43d6b4. 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/USL4Q1822148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72074428246dcadece95a6d79d2b64b54078f21a2a18a322cb65dd969c7acf3. 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/SEYOK1762105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec4be2ca5f04078ff147196fb28f2ee5f50038a6e26f01dcdfaf2f2e9addec4. 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/TR0532013607.