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 0x28709d9fe9670e436b65af0e0c53f44b3151143df45e934d099490d79609249b. 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/9c224885-8b76-4f9e-9629-3ec20e28ccc1.json and https://artists.proofprofile.net/proofs/artist/9c224885-8b76-4f9e-9629-3ec20e28ccc1.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 0x2d610f108981d3b5ba8622a7a71aee53ee1b08dc45537130e21a1f182d68ea63. 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/CH6541737747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb12928296ca57762a86d51c4e0c104bd82b4d9b1d1d58e61a5e70170c8b502b. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/CH6541737748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3116b54a9b996364a95ca64748d602febb04599d76bedd5e929bc2d34a2de78d. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/CH6541737749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccee3f4c65d2c06cd5f9197da3e092204a2d7d46eaa879cceed875ad5f92becf. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:46:01Z), 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/GX3Q92482383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc5d15d69d8f4df1547a2c08ac6aac92a947c2a461f168c000bda5cf3a7297e. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GX3Q92482384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1902bcfd3609eb9ef7bea8c3e0bf753ae561cba60fd0db4223eea40535d5e29b. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GX3Q92482385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1226d3890a1322fa565f791d30de8c3f99669f36f23e3972d1be527f2ed6e37. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:59:34Z), 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/GX3Q92482386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x933428ac1ecfec3f532ec675da26e115bda434f4a9de647384731add2a7815da. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GX3Q92482387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b6bb021539650a3e74fe92193eba2b6a0fafb7e64ec46155087e9d8d5610bb. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GX3Q92482391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157afbe4c8523a52b58277cae81b955b44655305411c0ff177e04b1ab31c143a. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:10:01Z), 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/GX3Q92482392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d40e7c2a4c7a79d0816b21a263c9afb939f35539b7e9c755dc512b28dc1444. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GX3Q92499530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0cbdfae5788dc6e49d2c78ac745e6717af57987069654ff7ba7cb65679875c. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:24:55Z), 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/GX3Q92499531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188461019188b8915c40fa85f8b66ee6b6ed484976eac4e715ef28df938ce66b. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T08:36:21Z), 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/GX3Q92499532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77fb4e8acc3100bcbb6c0c922b0878fa6d507031d3b9cba4aa8162c2b8d3db4c. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/GX3Q92499533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db65d7de0b404d90a4004eb3a55326d2f3349cff82221a48bc330cba4139c19. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GX3Q92499534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58454391b2948932784628535a458b96dd87e4298cd644456b732dbf7a6cd6a4. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/GX3Q92499539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc34debd911ab83443e5d5ee41379f1a0487da69283baf10a4a2cc55fbf1adb. 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/GX3Q92499542.