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 0xf26d475f99b92aaabcdafbba360ea2a64908a3cd666294b40cd6f1d64f639545. 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/42ac4633-cc6a-412c-a9f2-93e7bb2a389a.json and https://artists.proofprofile.net/proofs/artist/42ac4633-cc6a-412c-a9f2-93e7bb2a389a.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 0x9e21a12940cbccbf971a8fe0917cd159c733817360ae1b5529d803466b3ba58a. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GBJMF0600073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d68f528f93a505ab23df9f111a01b1b0fd5627417440f0e3c091bd83641992. 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/GBJMF0600074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea38a3feb8a9289e59ce4b6ac9526b5b491e9f433087a83e9ce036b30f5df99. 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/GBJMF0600075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64e40e422b75d864a6f4db9c70caeb92234cbca451b72b1802bcb8b34fc8673. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/GBJMF0600076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0671133d41fb4266f6515c6b77a7a198be1777b23c7df35304b9aee8c4d77b92. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/GBJMF0600077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc17f1a00388065722d94c03530e6630694a94a2d96bb26bc51a939fc3107a82. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:08:45Z), 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/GBJMF0600078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c78644741c1fd003f600b8bdd01759d9529164315852262ccb9d2d4ba01b02e. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/GBJMF0600052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb593cdd161df542ccc59a0ccbd2df2e15b4fe29ca180b0c7b5b4a4917bf196. 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/GBJMF0600055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ab77aa4d6e3ed588dd392272c9d83948d09b40142a712bb30a5b804ca342f4. 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/GBJMF0600056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c74ddc445f9cb45786512da0daa343d8be3df146edb39fbca442f69366157f5. 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/GBJMF0600059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71317bf47c6bfa426d77ba337c04029bae5999dd96d65ce2970d0256fc52d31. 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/GBJMF0600061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6c1970e87b3559baed66f370a8854ae126cee06950a8c3dcad9d79f726c6e5. 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/GBJMF0600013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b7a4b7ba20d7cf18fba89f8ffa720ebc5bb28eaf2c831b383f18f04558fb75. 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/GBJMF0600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31709b079f4b9083c41e88b9b392a5c44bf1580c82370737214d47bd4758ec0. Chain 2 (Bitcoin): anchored in block 957579 (2026-07-11T14:35:38Z), 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/GBJMF0600017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45c7731521d3bf66b1d2835eb824362086472c0bf8fd6e7bf81d591cce55f62. 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/GBJMF0600023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d4a80a086fed1f40815bb2d2875936bcdc23080aba4985291c2f927ef06f85. 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/GBJMF0600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c30256fae9410176dcc3723a1e58fe1ef15ef9171741bddff7b0d21f319823. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBJMF0600050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788be6907a11afed7e8b78351c14cf0e16149bb712f04b8cc1190c904ad9676f. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GB01A0700652.