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 0x3d12fffd1830435bf4165a1cd80304a5c9841fef7b4bf87e968223fb9299cbc3. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/782f6027-96b3-49ae-9dd9-6571d321d4fa.json and https://artists.proofprofile.net/proofs/artist/782f6027-96b3-49ae-9dd9-6571d321d4fa.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 0x5bda0c9fd2a8dbe1fb638f5bf0800d1b0bdd7e4d18f593932fe4ea6aa0c94a9a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QT4K32548199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90cc4ad10885181560fb0a18fbca4376e3825e3e688d201bee4502a14495492d. 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/QT4K32548201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab073463de305ac0b56895cfd5b2507737619af7a0c64625d25f368a544aa21. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QT4K32548202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68cb8cb183440848c6a5919db1883d7b3f440166fdfc6360ec883fb564b85d43. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QT4K32548203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952ee716e0e14ae84619c2b4746f209f3abb48df2037a34150e5efa0f6e4416f. 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/QT4K32548205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a871838a85ac8458707a3266298d37c252f5edbd0365e45976ea03e976ebcb0. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QT4K32548207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095667194729265a298db728acac73f231ff7a03e855c5eeb2e7499484141a38. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QT4K32548208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc039ae88db7378992f2a8c32ebe01f793add62bc2e6a6b6ca8fda6c8195d6c69. 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/QT4K32548209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb490856a4299c83b50479abb3b15c8db0ebd66bb44e0e8d453c447ff2c957758. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QT4K32548210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b66c2362c4ab2031824a4e584b6f22919d8d147449c53088fc15fcd786ae4f3. 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/QT4K32548211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d4e37a5ab073e00ec315cc12d93e72d377dbaae39687a6e1c13efbfc0624f5. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QT4K32548212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba857152418ffdc18ef6e7f00aa9d1ff83fb28c4581fadca99ab77ad64ecdb95. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/QT4K32548214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffeeb3ee9f0f0882d7414a17479c6890f19db30ac8d66615eeb3f14c83cfbd33. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QT4K32548215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f96c1014124fef3a9797743234b3252674e4bce11108e5434746f8bbf2d86b. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/QT4K32548216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6139288a0955642835805c431f774a9dd501c34ea32ac0a34d4a92ea5afd42c. 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/QT4K32548217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52001651de2f7ec875f8b62125f290ff581eef1be7848af1f526cfd48c98dd7d. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QT4K32548218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2845dea3b6689f9042b1a07e64e8693ec736ea5a5fe9696b1bec36224a7a805c. 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/QT4K32548219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261aa64a239a4f511e955ee095f07394851eded9b8468b2d4e7a13c73574dada. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:06:54Z), 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/QT4K32548220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffeec2f663a79608d09f298220c74dea7952c4c3104b0b0a27b9265a219ee8f0. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QT4K32548221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18dde350a3132257462b31dd1777abcf6213a764ca10f9fbc25560933fe73a9e. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QT4K32548222.