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 0xfaad21b3a0a7ce3b950ecf40a497489942bfc8af8e9860c41315b50820882b8c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fb5904c0-ee9d-4397-b3b4-82563c11ea77.json and https://artists.proofprofile.net/proofs/artist/fb5904c0-ee9d-4397-b3b4-82563c11ea77.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 0xa21832e8d95a27516780b81e06683925907483131b8f7a52162eb1513d425881. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZDA42155299.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3330748357c0afa0584bcff2fff5c23007cbecb17bb75d7777bafe9ffc1ef291. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZK6H2154108.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424aa0afe5bcfaf9b34895278171ccd24479ebb005a5f099d5672e402dbd4c0f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNWV2336606.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1599216b2c01faa5ab6e797895e9babd73055129cb0ae0a5c531a0cda42cd426. 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/QZNWX2346496.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9427128362e4d4568ae521f97bdf3e53feec04c89cddebda9c3cbbd8832e62bd. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/GX4R52353853.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4c5a64489968d0c48fb12703f94064ea91530120898a655f77cf6c17e0c3d1. 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/QZWFE2380268.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d9f457983657c4e0d793967532356e9d835eb92f5cacb84d35b9d11c7cc75b. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/GX5MY2341354.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08287edf60044fb027a79150b19fa2ff35589e464b0c3a41379e1d89b428c4e0. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/GX5MY2321887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9a97989db7c341681bd1003a02d305f4a80625f9dd9b90e852767b7d4d2e08. 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/GX5MY2331391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc14f33b5fd1b66f84d81ab9c3215bd458c08598afb55491dd4a834a237e520a. 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/GX5MY2396975.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c656f47eccc20f75edab69739aa4fbaf5580a99dc76f0173d211c5e9740f5d0. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GX8LD2471131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ad7a66f25cd4a8084d1bde3aac349405706f240939265b8931e76a0b510038. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GX8LD2473264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8ab2dfd8dd258b52dcf4aa45c7fed53ecaedfb7eccff74ad29dac336588ea5. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:31:31Z), 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/GX8LD2465560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb62afc85b06b18a8a470b6bc906e4bcb2590350decc3cb6c958e11997260d5. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/GX8LD2431069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72fe1347efe169d43a056c1e54ecac64b2b132f9dbd939c568dc046276e11690. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/GX8LD2480419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e170d2e41d5d754e432fe198f1c9b9a7b9cb4e013c93ee84f43271b4138868. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/GX8LD2471855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd400f91544b05d7c618a05f32e6188f237c23abdca4b4b483d6b089f4cfc5c01. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GX8LD2444618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b66be6987648880471a1bc729beecf3631b8f09a179c2b7ad6a80d50ff5242c. 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/GX8LE2418034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ddb865bb230e67eb6a04d48b01803e51d63f3881e43e7e798a1e29ef1b7055. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/GX8LE2488977.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x887898fddeee00df600562ba7385690881e9c641f6e5e51b1136ad5df4f71f0e. 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/GX38U2423662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7335ea924b718f41491313e21e5d78a493bf2360ca198e67b68d17e7afdbae9b. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:32:47Z), 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/QZNWQ2421963.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431eb8d431e9e1f56b92ce50fd2d98f0de1bcefa07f6a33de953afc931335db7. 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/GX4R52442196.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651299cbdfaf32691da09464db2be5e731ee147594fe5b76e675aea3fe8c93bd. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GXF972448292.
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