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 0x32d0cd02f7e030712b6924e04fb112e63d20e7b69cb2014e02f32d49d7020214. 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/edc86575-890e-4f30-96f4-e3279695e054.json and https://artists.proofprofile.net/proofs/artist/edc86575-890e-4f30-96f4-e3279695e054.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 0x5a6eb3723e8bfb7522275d0d1c4d433d18ce277108f81220b7a30911643a649d. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/QZTB62243549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1955a8ee7f5367fe96752abf5bde85f80366739054b6aabe36c73f3867577252. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZWFM2347952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc859ea32acc3ecebfe58a0bf54c2896797cf0d8d3091d1be3d9b5d4c82e10c0f. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:14:44Z), 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/QZDA72485836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b17697d265c97b6760d8e07b0b01b31a5b142a70ef944cf41d3eb9e603cd3f. 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/QZK6N2418831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6177dca001ed92fe2c9ed22c1e4aade9dd11b10a432498ee093b9bab6fe1c5f2. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:31:20Z), 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/QZK6N2418832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee1385e683ffc92d8941527f65d601bde21b3cb7ef9ff2b8fb15754fb05380d. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZWFW2455232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c785273ae76641231eded326d5aec29d7462e287334666284f44b3136e9398e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:47:32Z), 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/PTIDS2500120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72867171b52d1bbb2e882991322122e36e7b79f3bef66576c34d340491db9594. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/PTIDS2500121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058c5c4ffa8d68b49dc6028346b9fd5fa6b09bfc4193f1888d96cd4a5a5583be. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/PTIDS2500122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f200bb03a837e95ccbab487afbf541c436351b88121208e0de90b912ebd0ee. 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/PTIDS2500123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0731020ed4eefe3db699404597699ab591873685b4fd14d53b6476e7fec3d0. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:19:09Z), 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/PTIDS2500124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922a321e2613e5b60bad3d87b9f2595fc68abc2c23d877f057a25246cd6ba25b. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/PTIDS2500125.