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 0x9b8e6a60935e4c8602dccbf2b5732a1a2849b0893f4cf9f4c02a30677b24f7ea. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6b37fdae-8b3f-431e-8c4f-fe1b98f5558a.json and https://artists.proofprofile.net/proofs/artist/6b37fdae-8b3f-431e-8c4f-fe1b98f5558a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
You Think It's Like This But Really It's Like This (20 Year Anniversary Reissue)
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 0xfce94ce552c0bab6dcc8cd7b67315aab372d880a76d44f977521f52e1c8647f0. 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/QZAZS2006903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf896375f18d74ae0b0365ecb413d141d7fbf1e14daa2e058543c9815dfc35963. 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/USK110411204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5094f5f879b3398f5fc1d399bf1387bfc734b31d9550aedd6b00c4cab55cc03b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZAZS2006905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20f4d60ce2ec920427631a04b1c911228016717a415e57804eab5c8933dc58a. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/USK110411206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4d4984a0de5d550859d8d520fc9d9d8f150568914ff27f7cc773c989b8c17e. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/QZAZS2006906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eae221d98ec28ee8cfff964425b377245a784cd603d3b8d75cd7de1c7e49c4d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USK110411208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71628bccc4f3703d1c53ecb42f4c0260d860da732916a91c76691b689efbdbc7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZAZS2006908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bfed1a9b3d80f2e26e47db7b79a7674cb0ad4b777b0e6274abed8b0cf230d11. 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/USK110411209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7505bbff167dd5c0e6f8853f14d2e292e5e52a96e084bfa542b6cfac84bbe97. 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/USK110411211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16dbadc4ddaf035276fbdea41cdcbcc3ee026ace5375a9789a6fe73d2c080cb7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USK110411213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9a549f335bbee75c7276b4ef0070338716bcb0dcd50811f50e054a671ab1e7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USK110411215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057026f26e47c484f16bc6e56eb8d8c418a22efd6f16f217eef983fe44b7d8bd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZAZS2006915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91341fc46fa443bf1f64b955d88dc66d2ae53a1495d71ccd0f5630d19a6ca53f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZAZS2006900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4844b95c9f37a3996a1e7314516c7538730cf0149cfa193eda00f3bcffdb0a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USMRG1758402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb888642a26c7016cdb944df343355163e7ecfb3aa29b9b9243905ac1b1ba1d3e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USMRG1758404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b43835b9f64164114bb2c19cbc31b507d297aff64bef6f080a8bd6616bfcd2. 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/USMRG1758405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc11f014d73ab649cfd9343324cdd44dea9b3b7bacf75d87458ba9ff16bea866. 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/USMRG1758406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58eaf101c37493dc19f47579472ceaf64ba9195602d926dcdbe4366e4d37a6b1. 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/USMRG1758407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a443374e883f1d05867c551293bc5c24e38b1798570ff3ab403292ed6a1a8c6. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/USMRG1758403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f200b4afe14f5fb7b52a362696fc1ab834e6b147ce07b302209b7a3ab2e967. 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/USA2P1461379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c98c22f8eba607563fcffc1f416be9dd529024ab685100256a39227c1f0b9f. 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/USA2P1461380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267e7f4c9942be2d3d25b88bc2170d3ab8cd0de95383532e827949e4060c85a0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USA2P1461381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4844b95c9f37a3996a1e7314516c7538730cf0149cfa193eda00f3bcffdb0a. 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/USMRG1758402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb888642a26c7016cdb944df343355163e7ecfb3aa29b9b9243905ac1b1ba1d3e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USMRG1758404.