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 0x8da32950f5e968718bc7763388d19676ee37e850e2196f255898509327453df2. 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/8e38cee4-9821-49d4-9594-b4505a5fbca1.json and https://artists.proofprofile.net/proofs/artist/8e38cee4-9821-49d4-9594-b4505a5fbca1.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 0x3c4a94e8c80095c30e5a3ce225acb2e13c0c9b129935d0a64a816ba2664dc27f. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TWD970400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6909197d45ba3e6085d1e9b3a8f3b886a2cdeac40c37d7c60ce23785b3d4638f. 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/QM4TW1706840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7d2ff26c7815e316683830453bd66a911b801f5ad5ecd6de370de6ff143cca. Chain 2 (Bitcoin): anchored in block 957720 (2026-07-12T15:26:09Z), 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/TWD970500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55653165433a5001d9c71fdf9c54b7390aab9012f17b95641e5a5859e4585c3f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TWD970700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a287e0329f980af674425da898ff55748d6b4e8e9d941e0e7edcab32b930d5b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TWD970700021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690e06df4f10db70eb1ae8045a3a3f15f228df3db828579b26dc322614383a59. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/MYHY11502068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19d928c85cab2f045eae8aad0c846823d868fb7f1c6790d95dcda84d0286683. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T01:02:10Z), 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/MYHY11502069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10842cbad4c90b8dfe9f5ab5f550c40de7a0b7b59991813c57d8c85bcad7185b. 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/MYHY11502072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8f9d423c768f0f553ab18ffd33aff34d9c749b1b3aae61fe41db5d7451bb86. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/MYHY11502073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a08e484f7552c4e350ba723dd859ed3155bbe320588d92df88339a7ee2d3b8d. 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/MYHY11502080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10fd52a11fc3baff0f1c350b5cdd61d5e73992f328374a692f7d769ae163daa5. 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/MYHY11502374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ef3ffe792843227874fbc836222328e9e68f510dde7ec9822d63d02c1e84e8. 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/MYHY11502349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc613fd15b51a838807f0c1b440d27cf088487ebf9bcd169c8ef92828ad193fce. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/MYHY11501925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf37748d6f377be3878c2434993cfcdd73ee4f9905e747950c14d739bef9350e. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/MYHY11502350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca282a11eaa8b807f744794eed6dece7b4d98879508c302187ba4b0a52c76c18. 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/MYHY11502356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ea49fa72f655cfc0494cd924c6b69f0cdc0d4e7636b096564b4a612fac0cd7. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/MYHY11502362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8c6ad0c79bd87a3970333cc26ed915006f09725b3b4139ff42b5d8a496a691. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/MYHY11502363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8a446010b0e5a02134f0f28cd1d58c1753ca06f47ccbd7bdc8e90f33d16e9c. 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/MYHY11501963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a858467e767651751a9907434a6c21882ee15fd6875d4aade83d6c20f6ad048. 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/MYHY11501965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302b8dda7194782f5a0c4ab174cfcb4c7b6291163c87ddeb8238f65e461bcdbf. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/MYHY11501966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee94f876f59e0db27bd24a9023feacd5f739431604b91ca87bf5afe48d46577. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/MYHY11501969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d76b4f0263def87acaadc463b8009e657fe16ba5167c05bf1f046dc28f23b8. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/MYHY11501972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a8420bfaca64c7e427e416f76a04973d0c74ead5b038734e29fa202b341173. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/MYHY11501974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3793762bf465b61237242779ed5161ef7bdc0f5a5f39a973a185e35bbf7936. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/MYHY11501976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7ad67e060ee3f3ef004b819d2a6cdea92cf9f5d5d6c1db4e1a44c5134526e1. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/MYHY11501843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc93715d839f8c4acbce281edd8b50cf34b4867d04458044118acc40fbf0ad9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TWA119200607.