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 0x965ddf3fda3708036e1be14542fffd9470d08ced0379fe706e5aa349b735e449. 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/dbe8e388-c662-4968-8415-42ca99bd19f3.json and https://artists.proofprofile.net/proofs/artist/dbe8e388-c662-4968-8415-42ca99bd19f3.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 0x8d223fc43ac6ec9a893f2e072a54cf0c21d4869057ab915fdc6cabd20be28cff. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:00:32Z), 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/QZTAY2285404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80467f5ab20ea8fde75757c433268457d446e25845d4cf41d77c5f36e143f74a. 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/QZTB22211998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefbbad26be35f9c429af20e5f633baef171803f156b5ef4402adf7d7197db7a7. 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/QZTB22215975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576e3a4ae0adaed67078b7d722f70e46b844c79c2d687eb3398ca2830a55922d. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/QZTB22215977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b60d89e67a77c9dc7a5f081becd188f48bcc41a82dda31311bd4cd99577661. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T03:38:08Z), 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/QZTB22215978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1085500b62e4e6ebeb94bed24dae09cf248e51ee0ce1c94c201322bd6db21f1c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZTB22215979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5df1f16a5bd5eafa85e3e34d459d78d702bb520ee7fd5a03231518475304b7. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZTB22215980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x887f8378f493a1f787e40f245a455b6e980304857f61a60e9a8bdfde9ccf0f7e. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZTB22215981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894274926e4a0819dcf28f777fe7ca45cf16904c359abd833b2e8cab9c8d20c7. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:59:21Z), 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/QZTB32253893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1931beac967c213f81e35a84c503f6805a374242dc4dae252f9f94c0f882d0a6. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/QZTB32253894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3349d98439a8a8a5b54916a3b7c968e7bf8894dc9fad2e975d255161f963731. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZTB32253895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9492cdc3eb982f65892e089088354008c49406279dcfb20d8d0876ad5bf95f14. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZTB32253896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe81e0bc8ede323746689d21101f1389e1af5c2540ea69576fbc38d311060bd3. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZTB32253898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60309dc5fbfc263d77c142555f9f31985968a7af49b686efcf12903748b11ee0. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:29:23Z), 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/QZTB32253899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafaaae9e6aea5c0addcc87875970703a9f8e9fa1e6d6daf6ef60cbfb8fa87609. 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/QZTB32253900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc09c422f0f79a67834e83ec109863f0b9c88c2365266cf2b5d2875b397e0ebd. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/QZTB32253902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a65be2429bf8c5476d1b1e871efd8f7b6618015058e5dc22e89b875e92c520. 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/QZTB32253903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f987dcf9165374089eb0ae847cf7ed5f7c8d915fd5b04a7fa678c3206864b0. 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/QZTB32253904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7d0cd62106fbe982c3874432be12ab9541c3cd0f64e31321b5d94ac1ba04d7. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:20:54Z), 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/QZTB32253905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7b3efccfd1945c06ff4e99b61fd8bdf9b9af343f3f85c09a959cda0eb049a7. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:23:18Z), 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/QZTB32253907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791e085676313ed63da6e7dd7be125a9a095b87cce5fea6bffb038d149051f19. 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/QZTB32253908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab667e61f9e7a6619b75ae9e8e5685899c30c622b34db7e80e906553d554425. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZTB32253909.