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 0xed1e7ea667b86189726d90fb975404ff474d0239c409edf3080517a12095a451. 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/b356bf79-6def-407a-88d8-86e6e068e843.json and https://artists.proofprofile.net/proofs/artist/b356bf79-6def-407a-88d8-86e6e068e843.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x5386c22464f0eaabd20b3a81b9e88a0bfc76363efc069b8815cdb604b5185102. 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/SE4UU1500106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a3b62fc1a5836a06606756106e6f5ab7541fbffd380c7b4e0d19d46e608745. 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/SE4UU1500109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x214dcdcfb534242badee6b7f9bc0f9a5c138f48a4fa452bf01d270361bb5099c. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/SE4UU1500110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba47ee32cfd94a3765da630c50563a5ec496667d87b03e6ca98ef5a033af859. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SEVGT1600139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eaf4e8e3a2015b5a0199709de2b427d00abb0e2333a532b6ac31e2eafcf63fd. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SEVGT1800061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d60b54a3f93e0076d9303af7dcf04f13c0d0607803afc22b24bf33dad0b815. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:47:20Z), 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/SEVGT1800055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcada65c75e115000c1f0913f74a8f89c2842fcffe0a304979dbe12bb0adf083e. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/SEVGT1800062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08762fbddc87df3d204a0aa74d9c577b15cbe5a22f10f645848fb6edb74f280b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SEVGT1800064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142139845a64bf12449f474a70bee7cc18bfea5e4f782d026e0fcb6d58d2e339. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:07:45Z), 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/SEVGT1800065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593dcdef89e00c872a3e402d3c2f56321e4421c8e48e103dfe9e022c87e4a749. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/SE6MP2000401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60caf4f8bca785ef132541a15c7ada5117148eed1a767e48934730ab507c840. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/SE6MP2000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a64a305ce7da273b6e33bbabd90833f35199a7b1dee0619d845e55ee8eadad. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:31:13Z), 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/SE6MP2000201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe763d7a16fc55fc7a05d631a4ced690b27b652fa8b46c112bd5916b64ec11547. 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/SE5JH2400602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34afcb85cded656d8a2529c2646408c59ea2249da6a3e232bf1c299bb6512f14. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/SE5JH2400701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4d4650bb9ce8af7763992445c9b786b016d5c1f1fcbc8165555dd9588f930a. 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/SE5JH2400702.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a490225e8afc910aa03106f636b374bfeec41600057ef8c69ec245a130e75f2. 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/SE5JH2401601.