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 0x8a423ca81527de21f2d690a1d488e7cddc22313d06ae9bdd98fb10f10605a020. 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/622223fb-a3e7-4e63-85ca-3e520cf6c786.json and https://artists.proofprofile.net/proofs/artist/622223fb-a3e7-4e63-85ca-3e520cf6c786.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 0xc43e7571030290ac45528ee9feda3aebc21c28b7e9e76387c80114945b23a221. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/US43C1602315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8d5ab8a12c123419822ff8acde1a0534758e47b729e91ea0ee6ece38d21868. 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/US43C1602318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f55f937fc775dec0279b007be170b43d7d4ea9aff34963be32fbfe3f4965e0. 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/US43C1602324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7cbda2a7ae28d8334ec9d48f32bec8d413a6018a4b23401303db48f03241d34. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:24:23Z), 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/US43C1604138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383b332904401678f5b78dd6c2c9105b4ad5bf217793cceaed42a263f522b20a. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/US43C1604144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52aab00fc3a6b9c25c21a0aa01b3714acc726c05cd5e22c7e84574e80b1759e1. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:19:58Z), 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/US43C1604781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e148649e0e32b3b9b81982734ad41a4b6c004ba5d529d4c920731c8c1110c8. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/US43C1604775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b892a2af354d3c30b563ddbf0a0fbacf4f6792dfb40739a91750f1e62eb7ec. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/US43C1604783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49b4d06f96508d308431be0e23bc2a406c3b736d7e94d91dc52600d34e571a3. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/USA2P1834830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0a436612fbabeab17fbe2503217e26d4b57dc84150ef11cfcdc93c2af2f50f. 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/USA2P1834831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87f531bc25d82d7a93b09cc3d188604595373a536ebd8d642643c922b92935f. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USA2P1834832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c204e7ea678b2ade3df5266da35ee1444964aaf45bf0c857c5785b5aa268358. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US43C1609120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129a79250ec4ee99c553303d36b421ca9a779539268528841091a4481500472e. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/US43C1610686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264bb9f513e625b53e7306ac3958908706729cfca0597488c6eb278c9f45a23e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/US43C1610692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1514360bd21e021a895ed04f4189e36577f3302324c77af92fe579cf11a9f4bc. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/US43C1610695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729385152c5eeab84d9b17054f07775789cf7a9617d2f058fafc3f7f04e02342. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/US43C1614161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c6feacd2f78119cbdb187d952015f2760d83dc7c31613a998228070f1e82be. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/US43C1614164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1d7d50454ead0487ad34bcdc7e1cf37058a057127b59fff5ac191808201e41. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/US43C1614159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4335d34dc6363b5fa96f61eec90f586b316363646e7c10062bb709b07c8c7d77. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/US43C1624820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6589c674340f9e04dde3285402c70b9be70707758d7b186a9d41329d12ac2532. 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/US43C1624817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16cf98c871c40be6f33a21c6898b8677fab379eb499d088f8c77a8af441fa007. 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/US43C1624808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb083541e926be329470abccfcbbc095e52af112fded3fa3a23b28676cf4fda0. 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/US43C1624823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3122608d5ad40da29338330fe54119c4867a3c1274152bb6669719d3a8b2aa. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:45:11Z), 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/US43C1629702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e18ec4a2f335a5c80d5acd795a8c8b8561437eb554fc216d9d0d9600182958. 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/USA2P2472839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953c8235be4d39674910f3f7c89962fed929187c5d57b63c52267de11e424b09. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USA2P2472840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68d75f5dd2203a7e9e459e07c1c0171aca0dcd5c9b2bd0caa2da2fc68cac257. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:05:52Z), 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/USA2P2472841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e97f8bc1732c6a3a7d9407dc4d839c272304970646444bf612cbb00522934ea. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:35:10Z), 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/USA2P2472842.