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 0xe33033829d8b825f5ac42ff79c09e87e470858c4eca74afa661ddc8a57e30869. 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/7a4a890f-26c7-4fc8-8bb6-20c6306d758a.json and https://artists.proofprofile.net/proofs/artist/7a4a890f-26c7-4fc8-8bb6-20c6306d758a.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 0x116c4e1f292af904de3a84a5b0a038b212d00b6f1cb101ff42cb84780937fa8b. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/DEYU12308011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb53e3291035e155975a2cc21510965a71c436a656fc633902ab7953136d706. 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/DEYU12308012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9885e4351dd548bdec3045130e426807f68f4f26e155eab85ccfaef98f6afba8. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/DEYU12308015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b4b07766ddd0675f5d65ba2034952544252585a49008274de7930e487d8922. 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/DEYU12308049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70c4d12d609efaf96e471b7e9d65222d8c4c64cada9938cfeb37e83d2cf20b0. 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/DEYU12308051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b241cd56fa7328d1a762c5f99cce80eef2b53bdd6c06f7fdd5a9da14b5f6b6. 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/DEYU12308053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4571ef6f5073fb66608c7d092de64935929da1f7c2ee0e5e3311d6555c80ff. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/DEYU12308055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723539726ba1f03476c0ccb121431f9e64d5f66f8c53acfcd3171d1d0dc46260. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/DEYU12308089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f95c63dcaa6555723409894c9cb432ed99b5bc994965fdca1bcd30ad8913b20. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEYU12308094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387f2d06564d59c0255c9d8901e79991bd4b8521a3019709288412ff3c92ab3a. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/DEYU12308095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f9f304ce1a522baab1fc6200d38c49d92d0c0b9b9469018005cb9429f6c913. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/DEYU12308096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c8ca40afcb0a82180586f096fd502b6469c871f35d45a7c0aca077df932b11. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEYU12308130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6325f46ba22c021f8651da704404158fb976bd25ad11c1b574df4fa10f82dd34. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/DEYU12308134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc4c0f4a89dca46d4ca30c5c83578e7a3665dcb918ffdec67571e616e2e5838. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/DEYU12308136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a79147caec0d213b78292d193a255fede85156207e9e9ef8e79f8e9edcab54. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:25:30Z), 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/DEYU12308172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48b0ae5c9d964018db6d08d3ca17b9352f64693f39f5aec1810429f36851c19. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/DEYU12308174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f346f76645676049f24bb50856168424cbe6534445dfd966f2388b24c620b4. 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/DEYU12308175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2925394c024e5430664da9f5a5b42316d7c643b2ae50e01950204a69ad4e0b60. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/DEYU12308210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06498beb9d026cd5d3a9d87519a78c5576a9794877486f4bf9decd82c72e5451. 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/DEYU12308211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316d01bc1068643f57a3245cc9677602a8d6a44de28a23722a7188fb872e8299. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEYU12308212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34ccdc06f8ed48720584de9f38596a3369fed54344fe445b5ced8060886bc51. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/DEYU12308213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc612e1f2da8a6b4c6fc418ce32f976567c19579272389c34b57eec71ca84393e. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:43:31Z), 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/DEYU12308214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f571f368f4f0f6dbf2d65c09262239ebbb5a256b66da0a070d02e2344a41644. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEYU12308215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b7d8aaa7ab0bd708fa00874704b69b7a8925a65c1f16c22c7911075f5cef27. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/DEYU12308216.