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 0xc6a737b4b3e1ff97f57e56ae1ae6d00725632214b18e830acfaaadbd83269389. 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/93f1c246-d2db-420f-9018-fee18af30fa6.json and https://artists.proofprofile.net/proofs/artist/93f1c246-d2db-420f-9018-fee18af30fa6.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 0x8e53dc992c2fc15cbc05c0680324011f043c9766e271ba4d9825d82cf94243b5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES64E2202542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb16d30f99b9a2e242f006fcdcb8e8a0cab173ae2a59991bea0c11b9f061ee8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES64E2312802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b63f14a9d24660521bcc174bf544ccec0f293a8aa1086c5bad04600cdc7dad8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES64E2303233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4308c576fe3f8f938e16ded7d1e3ef0c4f4d1be2e1c425cc4af1cdbfc2e4d8e2. 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/QMBZ92052817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e52bb3400853390a1e058b6a0b965cc8ebc3a540aa99e5fc2142dbf1aa9cfb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES64E2451698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87285d1038f83b37309da2830ade4c59e248d4efe0dc8ebd9f1b5d958d21f61. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ES64E2301286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e3f1f52eb00d96c621c7bf25d8870a1b995682cc32e3816b24af564f0d1729. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES64E2201708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184deb0975f8a83d80e5b8ac474361c455bf0efcff22563df59213274fae33a0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES65E2200553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f1b1c574f1bf9db6ebb901360d8a2564ba93e2f12a5b0df7b50c88138fd26b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM4TW2266658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff28cada252b9ad877a9e98eca53a08ffdcc26245117e1df2fc96766b961ef0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES64E2309936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0536dcbd4225f86f1bfd3393d0d21329fd3806237ea0b6d0d1868313e8f44c2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES64E2486086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb7af4b2d6ba86c479ad07bced759137a30321c726a756d2f619140fbb3e804. 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/ES64E2465880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d860de23092f33cb6efa677727c061043b316267b00f7d38ede295f1b1646d8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES64E2335951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285fd466b33da2ea1acf79697db71c753be0346510a28605a802869e341d27e7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES64E2325847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6ead0c31b282da617c1064574c9df0ade72a99611d7cb050e56dc036f2f099. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES64E2331657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa5698a2f0f8f8798d21eb80147f0419858ae4e08f9bcdb7e40027b7c9f37e6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES64E2327148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6643e149896f15f498897004c3889b931347bfc5f4c6fa58adfbb1f7211cc7f1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES64E2204086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc78789a88571d9a4bf705fce0c388d59727241ec6e9ca40a3889737fbe4409. 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/ES64E2307350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc32687561a3c78fedc267cfdf491154cebbe93f1a0000e98f4849f1cdd4d20. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES64E2206030.