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 0x25141bc2ee5c425897ff447e1e103095d174b0c7f4e0edda246d5f6de4c935bc. 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/be6c594a-b97a-481e-a2be-ae31c79fbaec.json and https://artists.proofprofile.net/proofs/artist/be6c594a-b97a-481e-a2be-ae31c79fbaec.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 0xba6cd1f6981ed817ec067a0ecb53d13def985508213a339db052e5a33a03f633. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T19:55:13Z), 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/TCAFN2108495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3e2f697eab1376c193cb282ed9ccec80b36d0c8a085b7ec634e0d01909a63c. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/TCAFP2183870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde381199ca764a950ac7a43c1e91ccaaed80c1aa953fe3375b977289936c90a9. 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/TCAFR2157125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722e84c2ab8a8a5ff1d13909e37a6d42ba11badf56f9d73d225012e44abb9ee0. 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/TCAFR2144565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd241b5bd8fa0a2f96fd10507c3a602e1b6ddb5e1c435bafe2f59e86f4ca70cbc. 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/TCAFX2118160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6a1710ad196f98ccde601fc8dae76077abf05581c1461808492ea53ea4d202. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/TCAGF2265393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86d13630a978308184738a61b52cd86b840eda2f79b12510d80b81140e6a50c. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:08:06Z), 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/TCAGI2237977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712024f65b4fccae4b648dca722125f791a792a8fc9e17b5a44c3ff8f27c57df. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:34:29Z), 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/TCAHU2437567.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89ff155b6e0c86b938b0651ca22c9179b689bec1836da079d8f9866efdec2a9. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/TCAII2453557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf496039101602fdada216b42a38e1f2c767e7d59e18885a9cb0ff90009b9b6d1. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/TCAJE2579333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1d8af459088a0816bf8426935c87c614244540d355e0488ff4fbb511dde88c. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:08:25Z), 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/TCAJE2579402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe917d0f936073f88b66382ef23e6f0c36fc2c9e3434379f886a31b34f52f02f4. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/TCAJE2579493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7903595a8030eafc42bbd4bc88391aedb96450d641714bf40ccf037b1627e2c2. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:12:49Z), 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/TCAJE2579564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21a35975312fd93849a1a3e9bec86eb628e9d0e5741444f31875b294214f3e5. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/TCAJE2579590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38633a7fdd57e53299e2a69ee4ca0581b5612dc3f8be0b2ff41955416be65ee4. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/TCAJE2579622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33da01148cb035cf706b0dfde986a5b482b01aba5591d989108e551c5b28e8ac. 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/TCAJE2579646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe506a1d1713a4d8d2778326504771109e05a1da6524e691afb83fd12edca1dc3. 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/TCAJE2579666.