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 0x01653b86c84ae771283913d98525f708b033e9ec30841a70fd12c69f18428497. 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/d847697a-04f7-4477-a376-a2d07dea89de.json and https://artists.proofprofile.net/proofs/artist/d847697a-04f7-4477-a376-a2d07dea89de.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 0xc0398f2504ccf42c82815188d0198b2a3bc503e4eb3d07e3020c4843cc404b5f. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T07:49:18Z), 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/NLS6R1872865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05a747403c6a01ee947d76beafabb0f898ad502a0a2523d24807b6136cbd837. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/NLS6R1872866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9924c6d1d101a686669e467999dcef32c30c08e45c7e2b115a29b67aee7025b0. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/NLS6R1872868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef65460b2340abe7d8068c381d20eb59faf06f8c6fae5b7978baa183fd5019ee. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:10:44Z), 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/NLS6R1872870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8490d6616cc9aa52858e3e0475632a916c807a59fd70d585c39e7af4b236c4. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/NLS6R1872871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84385594164f0f380560a9bf035348740d557404d1266629db4936d9f62fed4. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T16:05:23Z), 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/NLS6R1872873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cef64cdf103a3e18054fccc0558e7e0e1012101716cbd4cf222631b46560f4e. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/ATN262204704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c9ac9aa7a94a965fd084409c9dafd00617e94243cd68b834b6b72e0d7d57efd. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ATN262204706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db2b8250a9bc61359bee0043a8f95a80b879478bc16fa1f684c2950b3d580dc. 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/ATN262204707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01751d772f54d2cd1179a2917e7ea6eae48ef6cf50112f9ca1c26b5fd252fb95. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ATN262204708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087a28954aafae01d89d0637c56eaa38d4fd1b726b7e44cdd59f98490da888f0. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ATN262204709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb175da43995ebec10e36cd5f241f2dd25933314e47eb083d3ee941d382a5cb01. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/ATN262204710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cfa64fd55dfb0f9c7e2b7ec1223462a3f825af60d0605f70af49cce8c29fe49. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:25:01Z), 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/ATN262204711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e12bf4be3c3aa2a43e0f0dd85c6465561fc57d19122dd9cc5c8aee18041b54. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ATN262204713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24613208bfd6d9f15e48a74453ec78ca1c02019d3ecc52dc1f8d83c5362868da. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/ATN262324601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7f3f2e4af50b43d7809bf7644ce599c4e0decfb8540e7fe9cd2ef00b325711. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ATN262424601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08aeeee223cb4528d5bf8d923652f98d51c4f068b094d4204df558355231a6f2. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/ATN262424607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869f4e649981313f4f0ac25312eca1437bb868f37c5694b63511a37042536c8a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ATN262424608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe516f65a6a533493c528abb2499b93255f520a7cc506e1eae9794e8ff8346485. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/ATN262424609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc977d21784354e47797ea31ef0360e15b1113e7c6055ae5bf660c48730e681. 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/DGA0H2496013.