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 0x5a5ffc3e2081044e4723bb417db9c2f774e04189275c3594a9eb65d334ec33b2. 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/c036159e-c8b9-4fdf-929b-befb13a50fe6.json and https://artists.proofprofile.net/proofs/artist/c036159e-c8b9-4fdf-929b-befb13a50fe6.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 0x2b1849fcbb97f727f690d1c226f8f5044149ae95697dff69569d90796af88bdd. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/FRX201616307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e44469f772700663bf10e4b81f60d7f113b0461048c455cc7a91393aa5ee27. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/FRX201616259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c6a33ae1755a9685c8dad072217dac57aabaa8538905427cd833137b6f5267. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/FRX201616261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45cb4fc44012454ee90b828b6eacbeceeef4d7abb5a1c2320d860983ab2e2fc6. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FRX201616263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241439cf0b31c78f9c39114a24fdbe7d9b2aecaa5596b217601aefbefe4d7dd2. 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/FRX201616267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24ce66c137119dab1ba725090fa82f4b99757065896ed9cbffdf975d88bb41e. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FRX201616272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b0b5ae52943e1d6dd264df10bf34f88e54e18a6a42fcb79be8007e04ee93c9. 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/FRX201603512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455f80b72023c8bba4cdd3bb3738dcd2e19f075b603929dcfd0b50c8209d89d1. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FRX201603516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36019be1a73fdaa714a1de2476527113ae6fc494c0866ca1476836d57bd8decf. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/FRX201616255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc149019c75e61dc1b1cf0f0d10f7922750b4d0a771467f33d646e0ede3023526. 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/FR2X41646838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74756d4d18a1baaffb4b7f85fed5530efbcd87c63bc0df3d9618858548f57bd. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/ESA011947127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dcd0ccc2c0697f464503b944b1df58b382850faec5698092a066a1e44d6bd3e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ESA011975976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab8fde14afbcdc95e7861a423080cb84b290bd048451ec5d836b5de96ab2538. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TCAFQ2121400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9c04a4131ccce1800c6f75959667742c62dade1a67ccdb883338f181c7cf8a. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/TCAFR2180168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d73c60ef87848d24da90e3f921ef508f1fd414d21f5b61787c18ddf4ee34b3. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TCAHC2326331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e57e2c73c1ebed0b84c8b6266aff137b729a5d32114916dcbfa01cb86e801e1. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/TCAHD2321981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7806cf356dee26fc9c530ee705a1cd4e6e43603b602d8601eae852176cf73d2. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/TCAJB2425189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46eedeae6db14ba5374100a35a91afbf77e765f3a6cac8f193f2be9a6c0ef8ba. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAJQ2536541.