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 0x54e37fdfc5cc84553c9c3959fe4df27ce5be0c764778bb3bec42de28edd28b0b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/28845052-16be-4c48-968e-27a304dba0f9.json and https://artists.proofprofile.net/proofs/artist/28845052-16be-4c48-968e-27a304dba0f9.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 0x10a5e2e07ea769b1cab1d1b6f7568c727b4d0c937eb264c25b9e2ebd6da4740b. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/JPB460820801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a3c71969de9c798f81414c129bf523ad95b7794dffbec37a7460dd9944563f. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:41:15Z), 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/JPB460820803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038f2f3eadf173eab15233bf413d803c0ea70c0063ea19a36e6adf6a78ef36ec. 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/JPB460820808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407797d636265c04aa7eaa6d2988607b4a05f80d4cfe55b0f6b699a014c49610. 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/JPB460820810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb163e4e26d38873e66118057f94b6a30528d6fcd4b9962a7dc0724dd69453b3c. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/JPB460820812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcbcf133e1924ab336987e205af04b7b0509daa79bb537d0efaba465a0503914. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/JPB461030201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3380451cea2d7bef56af845d54c3ddb5c30b8d2a92e23aa39e315cbd3ca4f21. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:37:00Z), 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/JPB461030205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa9e22aecacaf90e6a7115d3e6830f038726405f6b8f48e5b95ecb2f3e9ab68. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/JPB461030206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eca827ffc6b4c0600f2fb66d82d43f1eca3b2409ffae565af136bb30d728fbf. 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/JPB461030208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4cb2b58481a49a009953e500b690df2323acba53670398f829517c7c73bf23b. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/JPB461030209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1d4c6858bd9da1ff3cc00671a75d5d5aaed765b4d0dc4b3514116a8d2d9ae1. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:08:01Z), 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/JPB461030210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c3025591a79af76eea92d2d3eab08f6a0fb7373a6d818f5925ef6196c0f5dd. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/JPB461030212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec2c85025bda3ccd68834a1d64f1ccd1ac968f779229c873fc1599d47b57a21. 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/JPB461030215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0711ff3ac20acd8f2f211dcf4ebba219f3388d97d5e27ec9f77ad2d2c3df19. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/JPB461330605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc7f70838b6215a255ef28db576e7a46aded866ff4992d8f492d7a2af4a4ffa0. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/JPB461330606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706c17bf2cf8181f0c270dba8fe7f4c8cab62f171181c7bb073203e4fcf27e9f. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/JPB461330608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d49536d254ddc764c3a5c7532c05050053b101cb50d6b2b2480fae39cfa0ed3. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPB461330612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21d1cf2323f17dc9c93937a5de5d302d6e693d0042896ff8617ab5fde1a1563. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPB461330613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c91ff504f2a5ff3b8b523b542d692294884f8d03db5ac62356050d748447581. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPB461330614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4c1a4c88c716d9a6bde6f21f38123b97a475d3aab4fd16fa019f3931619992. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/JPB461330616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ee2fa0a6db3aebd19ed75937920fb8b3a20b3b885eebab7ecb7ed7da1ce16c. 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/JPB462252403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464fe21f4086b0c88951a824caebc0f5125cacd691e6e1462659c7455d9ff18c. 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/JPB462252405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8452d0c227ae9040491e9fe84ed4a1dcc94542f8856d91bef2bcccef88bd80cf. 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/JPB462252411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0de987924e570c7434ca4108c705454ff44f118f7b0a3defc3aa4809947420. 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/JPB462252413.