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 0x4ded01022808a0fc1521fa9c98ea699daaad54547404100f66bf75b9e43c4c9d. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1062e92e-3469-48e6-b8f3-1d051f46d263.json and https://artists.proofprofile.net/proofs/artist/1062e92e-3469-48e6-b8f3-1d051f46d263.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 0x7b1b2ce8bc585ff5d29a44e21d9e6996c04ca5d7458d01c6abe32d472ecc92de. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/FR96X1924727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee8021bc980baffa6c1ace82c2eb9e9e5208de818bd2fab91ff98ae675c266e. 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/FR96X1924728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b954a3fec34a83d82f5d641a3109f7c7cd987654442ae369d42a204abc6709. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/FR96X1924729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01853bbb2782a7f72579771a2ee25cb96f2af398d71fa0c40591b4caa877928. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/FR96X1924730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce42324b1aa032aa86d56cd0b434c80401fa46c493b729458c6d2eb7ba3ddbe2. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FR96X1924731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3324a309b0ba47b13049f5113fa8940894b1cd350f2e980ab87e1e7ca44b684f. 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/FR96X1924732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d059b901eab04fd8fab13373bb82020f64fbe457b7a0a088fb95f809093554. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/FR96X1917178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f388a6c34831e701fc3b0a9b2fe62fc8e6d7aa3a7542893b916a9d95e8adcd. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/FRX201980284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d328be4095fadd61ccace91aa3f615e11b1875e74c2069ccc19fde25a278621. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/FRX201980285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008159f9ef548f87fcdf1e892fb7f614cdc906d198d8d91f73e36e69e9a24e6c. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FRX281941598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8b163b80b9ed674d28008335d858a53848f1bd2d594346f2b18ddc72c67d94. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FRX281941599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8260c420c145a61fbbabcbfdfc2ef3d6228d18c97a0439e29d92c9efcfb8ad33. 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/FRX281956515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0abeee4f19d167a6bb38307ddfa605937bd7668be74b443e52aa68f3509b81. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/FRX281956516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1452c43e015aba3c76f632413bf31057435269ddaff736cbd5f675e0b8210429. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/FRX281956547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52301e50002d0981cee7574e563cdc536c0c1c0ab22f35e395761a077dfa43eb. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FRX281956548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d783cbe263f0a3fb7af52168451dc0d2cf8448f7682ada9e29ef29e57161fa8. 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/FRX452069781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8915a3a26af9ec38fb338efdd94775ebb82ad82da0e1e5e69c82fe7187955fb0. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/FRX452069782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44b2e7e4526f2cb90e2d04816d2969cfd40971be15bb69b212d51decd1248e8. 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/FR59R2050280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76cc84069bc3e3907b404efc96fa40d0a5605ff72966457ad63e276c67281c33. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/FR59R2050281.