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 0x6687556e6c5e30a56fee8b46e177db94418c0edceb09cf7389fa3d0afa846787. Chain 2 (Bitcoin): anchored in block 953638 (2026-06-14T13:10:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/39837dde-ae91-451e-b547-146aaa83ad5b.json and https://artists.proofprofile.net/proofs/artist/39837dde-ae91-451e-b547-146aaa83ad5b.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 0x146ca52f77ca63ecea39d1186e5cca531c4c96862dd2e5206caa1e2ab829a5d3. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/DEZ622000211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb973634d8758bc83294851fca4871c85ab7b2e0d5eb116fd7dcc7d08471cfdd9. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:55:56Z), 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/DEZ622000212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5eefc14b9250dd02b74bc5db07088357df93a718ab9cb56e88e386f661b0472. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/DEZ622000213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8f1b19e11cee4d06e9fddb8def45cbaff0d9ca0b5dbd962e9823df850d4250. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:57:15Z), 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/DEZ622000214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33931b0e49629771e4427db089a502132fbe73007a6a0c87b73d10982f5b21f1. 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/DEZ622000215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64843bd8f316b5eeee66b9a62f65174c3fdb2737a5218e8ff0bff11a80765cc. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DEZ622000216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9062ff259c6b9165f30a00963732ff2b116fce769524bf18902bb04eebd3648c. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/DEZ622000217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4666793daa172d36c5c8008eddfe5fe1d8de42e8f10dea83f07d9098e6c6991. 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/DEZ622000218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7fd8baec4ee6734cec4ef3a34a222b62c579ed00b3e3e23face33d99aad0e64. 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/DEZ622000219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d069f9b892f8c05e778d0bf1e40a32a42bb1c200ed0ba86b0dd847ac78f0db0. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:42:16Z), 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/DEZ622000220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe782ed9aa3933ca99074078d338bfa3d277536cd867b4b73261005386297d0b9. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DEZ622000221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc76df9adb3cb7419e1d107e524c803807af8c03b2972e8fd8d9915d9652a1d0. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/DEZ622000222.