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 0xea245508c811763f8ada86478ccad6cb467bcff7029a88e25baa26454f65b160. 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/c01dbdad-484e-421d-a4eb-0f407ab814c1.json and https://artists.proofprofile.net/proofs/artist/c01dbdad-484e-421d-a4eb-0f407ab814c1.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 0x35b73f2296f2aa82f552c476e37c8dbb2c2f78d58a8302b4d0d40f513bd387a6. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:24:22Z), 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/AEA3A2546281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199ea29a1aa1d55d2c04a0a872ea7e63bb4597c9d914d639f3db539317bd712b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/AEA3A2548750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ef1bfca4585a160c9620645dc34304f83dd35f0e317106405a97aca6298076. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/AEA3A2597077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf490a22bb69846d596253d797b34e90d53d711a0758aa5e3e0e36a754bf06aca. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/AEA3A2562804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ca8e578bc3f323770f77405c25113d4e8388420a4b3562ea126e0918bbb9ac. 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/AEA3A2502508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400020634e16bfa001b2c18f18377c0eeca25444bf71499cb26aeeaa23b31af1. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T08:01:52Z), 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/AEA3A2131398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425d766a3299d19682232a65c66d28c9cb61ee1abe120b26c929df2d647b4a5d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/AEA3A2139600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870759f420cf180a0ccf7f5a6b4595ea3c0c9ad60781cafaffb70070b086120d. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T03:02:16Z), 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/AEA3A2175270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7372e523c9ab9ae8ae488342e88c8acb92c9591444348d3491a7d947bdaf4fee. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/AEA3A2182753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaafa26a507ab2373c30db1ec197b66940ad33f8dfb4e8d8ae6ba2f80d5edeff7. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/AEA3A2136227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46584e7747d082a3d4b2a0883389bddef1579f86569d5f40d390aca67a06746d. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:23:25Z), 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/AEA3A2100779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2879b3a8c2177113c8eae93114078131ce2f4d5088ba1b633103fee0545a36. 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/AEA3A2135992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14194e04271b274ce90f9000284a5a8b2947afadc8de318176a23fdacffdb053. 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/GXBAV2150283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab9fd5185f73d67c2eab4dc7b28c69c143f526de995e934b631ca466a5b235f. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:23:17Z), 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/GXBAV2059207.