1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x222417f4127634f468a89984ee85e4172e649343715d322a1060e7a587745206. 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/865126f5-6c68-40e3-a7c7-1b2675ee61be.json and https://artists.proofprofile.net/proofs/artist/865126f5-6c68-40e3-a7c7-1b2675ee61be.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 → block OTSBitcoinBlock must exist at that height 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 0x75cb66a14e2573eaca7ff271df1fcbf27d249d1182074b07832e24e182d5b297. 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/DEUM72005440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd5d8270e9f80ebf42a7a08a6d608fae27d18b6a647ca7ae11e9ba766dab628. 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/DEUM72313427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd086f31fda31fe73500204a8446402cb2c3408c6553544b694b900a3dacae092. 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/DEUM72313435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac509fd6853d8b38d19c214ec440dd79d1db974fd5d200e767a33645e49a72e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEUM72119638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e24cea41873ecbb582ce3a3b38399188b3102edb44d188389415eb3eae5a89. 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/DEUM72313430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12fed397d7c913e3d1f37a6608cef97a8df8fc7dbe5e46825a40903017400de4. 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/DENH82200290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7acd7c42febc425bd16cad7b8fc7ccce34cca3531151990addd10d5be7b8408. 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/DEUM72119034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fcc922b8b7c7e808c29fab2ec84a238bedc78b365bb0b078583ab1bae1c8122. 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/DEQR42302025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c48382a034ffc8f77a11b04d90f3378172bbf23e24e90acd38e4ec68c3ec1b. 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/DEQR42302062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fcc922b8b7c7e808c29fab2ec84a238bedc78b365bb0b078583ab1bae1c8122. 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/DEQR42302025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51cb0c5439e35f09fabf461b2c2435d52b37cde7bc55a69ee89fb8867e50a5e3. 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/DEQR42402181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e24cea41873ecbb582ce3a3b38399188b3102edb44d188389415eb3eae5a89. 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/DEUM72313430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576ea7796ce9c63d419bc6a995f5ed2d646433af81e4d0f629ee0a553fa8fc0b. 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/DEUM72313429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150ba9eedfcb385abc62fb59d390caaf9d42709cb3be4ae448a245cff221f880. 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/DEUM72313387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda016af2773632c5b3e72e929bde6de78ade14e7d92ff9b78e52e33430eeed2. 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/DEUM72304951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec85874ad9e4cd99a16f3bd2d74dafe2a5cd606762c44e8403341acaaa10e5f. 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/DEUM72119636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67525057ea0fbce7b3e9e21ef87963e16f5fd5a7c11c5aeac51031322ae68c07. 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/DEUM72119637.