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 0x00060a6d38cb5e8712bfeb4a8a60c644c338ee354ae36134daa867ccb1abb054. 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/54aac9a5-ade7-4328-8848-a0adfa807d35.json and https://artists.proofprofile.net/proofs/artist/54aac9a5-ade7-4328-8848-a0adfa807d35.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 0x4e154ba0600c420c2cc68c385227c94a6f531201a5d0f4472de6f593142480fa. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:44:47Z), 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/TCAFG2019756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3bfee5f6de1cb40c48bb4209f48eea82757472ed1807063af483bc843e2bfc. 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/USA2P2141464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a66e3897180837e85937a9e10351f5297f8115e9002556d50263dce0a01234. Chain 2 (Bitcoin): anchored in block 957569 (2026-07-11T12:44:25Z), 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/USA2P2141467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f99570d86b75d985e2a060734f99df8e4f9cfc5b23d293a4aeb631c91112cd5. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:10:39Z), 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/USA2P2141462.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74787d5958aed6b500ac505d26de278e5e5a739b19ea46fd41772fd9324b0aa0. Chain 2 (Bitcoin): anchored in block 957564 (2026-07-11T12:19:47Z), 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/USA2P2141465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d43a39947389293695848a964a796091a37c5e33c50f0e5c6ed6005052a5ec6. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:30:51Z), 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/QZQMB2102258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa853f7600476752d9abb83e3e31ce3c9b396751c2189282d83d5b69901f2df82. 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/QZQMB2104475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14993811d4a2e36bb83a858092f64cc04fe54906443931d07533390959a2b75a. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T01:18:34Z), 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/QZQMB2105453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856ab183f6c933d7dd8a66fd518a0192dd5cbab095b2e2e46218677d9388c4c4. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/QZQMB2105641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8687733dca4e522433e26103c610ef4585f8104ff675c563c9fdd16a5432194e. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/QZQMB2105646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ebff4cc2a2837a33e8f085797b1a9c359a9cc5c14159c16b106c0af76f5348. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:09:11Z), 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/QZQMB2105647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d41dca9bc46859617aeb256e9f0f40eba80d4a050ab211697070924041d010e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZQMB2105650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9618067b272d6e27c1f31393ab3368f7daef4a80142b251a91f9da303dc988. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZQMB2105653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8930f01f15e8052bcaf3cc74f02434509a5a62809524ef04369ac83b5142e869. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QZQMB2106054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60024a0f61ee3a83acec8cf5620a6a7f200c7b84c12c55f862c3ee4702222d65. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:11:25Z), 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/QZDQH2390942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbbf5341b3f398264f7895796e37cb74d841f6c91c03dcdb4082eb61991b4744. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/USANG2483315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6482a904e6532c1eeb7ce1c2a4a7b699f387f46b343a03be1560b8647e28c5db. 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/USANG2483313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1186a30b48d972f9f5acc1fe643959830e97fa8250206e14f5c1fcf01989838a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USANG2483317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70cfdd693002bf39406d30e074449ba797f74966bcc93107db933e9949cdf20b. 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/USANG2483319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012ab9f322ff47724c875acd97b9cfafa950b7d4070b32e1cc5607f6ea1fa607. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:21:23Z), 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/USANG2483320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14106718c8c57d969b31002ba5c5b7ec7eba87f717005df19f76ce534e388ab. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:58:18Z), 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/USANG2483321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0ad4a02dcf0f73986fb3d711ce74f9e67f10ba7804f6699205f17b14d74123. 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/USANG2483322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c7894e2fffc1e2e5de7825382b1a4d6f0988ac5eac05af5d3e199ec14e4b19. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:17:31Z), 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/USANG2483323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2010e193bf5bce86831b934c626a0ef0ca06f2e9bbbb8499213f386339684c. 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/USANG2483324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ae51267035555c9c890f9be8098f153d90c400d26cc570c1f5247b5f6edfc3. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:56:12Z), 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/USANG2481076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1a12f300666b2b3bb7ee0264ca8934ab1d87ee7df03beaa504567be7d6e71f. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:05:25Z), 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/QM3DF2416857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2f4af3631d58d1673987fd0d7590fe74978a275bfdafdcce7c480d8be9cbd8. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:46:28Z), 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/QM3DF2416852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b00812ae77bdb4217acdab10b653939a11eccd14b2405e676711d20c803f88. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QM3DF2416854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b534df03430c29ac45ba66770241a4540a307144ff751da61a572a81dcceac1. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USA2P2208328.