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 0xd7a490b91d7738419bc746f49d78f08cee6003958590ee52cab1ea53e564734e. 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/1acb3767-e52a-4207-a5c4-380b8c2a5872.json and https://artists.proofprofile.net/proofs/artist/1acb3767-e52a-4207-a5c4-380b8c2a5872.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 0xfaef26ecb2e120587e304eb549617ce3d94d23349a372f93fd0129da248f1820. 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/TCJPI1999471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba67db36318b3fffbd1fddf23f832bc71d0defd0e0636fbb239be56484e7ec2. 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/TCJPI1999489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc175ae73eca7edda8baf4528d68e3e6b95ce58367878a541c667c026b757fec4. 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/TCJPI1999491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e082687a207143fb6845f89c0cf395c9be171b9cf570d7dbfc31117a21e878. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:22:06Z), 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/TCJPK2059112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d067b1c26388f61b4baf18166fa38f3a1a18eca04393c585cc4706f2f7e82d. 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/TCJPM2013782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23334adfa12b2175021821e1571f8bffe9c233696b0f7f74972f15686e3b38a2. 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/TCJPO2154626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227c609a4e64fb37ec7bea2460b26890c00f8bbe943ad49aa138332ccd497efb. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCJPO2169659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44bafe8502fc5d189515f382d4426fa54ddca8999739c153123411c3c239b02c. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/TCJPO2188393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9b2aab61c6044e351536c386b1143bb40dc71e0a98e2181d815f3f336d39d7. 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/TCJPR2269970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3bbf8cd2d6d317fdbd76b6bf98379f5d2d03d853cee0b9ad15754db4d71c35. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:14:25Z), 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/TCJPR2269973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ce551a5b49cf0db69f246f7dafd9feed7547b29ba2a929d169e4670592755e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCJPR2269974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae2b13e2c659dfa58bc2bb6b56f96a7603a3dc8b9151b4e220f91aea0f91776. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:06:53Z), 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/TCJPS2205861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6087fead2828e9732b276eb3e2c80f564b7634a10548276d1388af108bdb10. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCJPS2205864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d4de3270accfee490a7c3bd57a3534f9de54a177b39757be221e54d74f841d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCJPW2366754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1f936397f81248d66d6015ea7d6432603e130ef4dcf05eede1e5d8032453e6. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:42:18Z), 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/TCJPY2484443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21c2965e26fbd1f57fe268c10ec64c940e3995f1608852884fc04945472f907. 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/TCJPZ2459999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1347fb9b5fd28f5bbadaeb49e17585cfda9bc622924833f4b3b0a59cd4c1397c. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/TCJPZ2460011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e05cfc104da9ebe24725de53b3983adf1278817462dee1786c600835b01a245. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/TCJPZ2471418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42d8fe3642d5e7194f1b9076c19a52febea0accdaea548170d3a4709c2ecf1e. 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/TCJPA2475047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473bb4b37c6fbc0365d571fa74bfab81903bea23ae2497d00338bbf5f2178bef. 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/TCJPC2448927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07c20f205310db46928b3446b4e1ebe15365e8ef659edd69da10ca2da53bb47. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:52:29Z), 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/TCJPC2448928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9725e1e4823cbea964ab9aece562ee57bf491df6f619676abd3192ae68266d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCJPC2448929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588467da33ff6e65dcab65d6e7bd2bc33a3ff250e5196f7c8370d44150e94c20. 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/TCJPC2448931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54b55bc7dc5b8d4a2756d4cf71343823482ddf154f9534acc575a98277e6f81. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:31:44Z), 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/TCJPC2448936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf984146ba3b761fcd939ae0efc54f4ef00387175ea438b73addc113df678d33. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPH372100074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad64cd403d215dda1ab20966bdbfa9f61b682b953c726a699f83eab6543a77f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPJ902004780.