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 0xa9417adee093773b667ed2901656a669e72fe940bbc77978f70f64c597c9b3b7. Chain 2 (Bitcoin): anchored in block 953812 (2026-06-15T17:06:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f6c2cf41-314b-4f3b-8e68-d75070e863ef.json and https://artists.proofprofile.net/proofs/artist/f6c2cf41-314b-4f3b-8e68-d75070e863ef.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 0x10af1292275b933cf474ffad905641f3f83005dd9a840b89a6ecbedfa3b549bb. 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/DEP069400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb394d89626c6a9f0fd51e4700bfce7e1eb8be5c7fc5e44a888df8c9458387309. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/DEP069400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d508c24fa061e85965f63edb9c9f9d343e1e0e2a6162647fb31756a78bef5fa. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/DEP069400106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2e6ba8a78178b9934a404016042514a3c0f203d628bd77b9e4c26bfe891837. 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/DEP069400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c88c445a6a6a42a3a7ba0ac4d3799a377ffa20761639e1bf61e716bd59d7052. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:24:21Z), 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/DEP069400108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1db7735fa0a4b74cc20350a25a3322af79fbe38c68662e33e2e8e6f400f9f4. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:27:04Z), 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/DEP069400109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950969f69d9cac4b1c62c30c11edff57c565e96b90320867855d3d09bf5b0ace. 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/DEP069400110.
Antifona D'Ingressto Alla Comunione: Qui Vult
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b5debb2425b22b481336e7e70196f719db653691114198582164c72b21667b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DEP069400111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28600ce0f37eaeabbc3f1c8c8e359bdd61504f8fc13b9366f7e971e6967bcab. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/DEP069400112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5857a8d180433c8c28619a17525c7fad0c89b97b458d70965fab1d2474f5236. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:01:44Z), 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/DEP069400113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ca73c940ec1cd8cec4914ba2082bf0eaceb639c9f7bf35f8a80142f3b8cc3c. 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/DEP069400114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b28921e33d05b8ac7606dcb6733a844c5ed054dc9c6fa0f40d3ab3501123f7b. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:34:01Z), 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/DEP069400115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e8c13e56cb0df679460eb767918d1061d724df3f37883244bcbcab3627accc. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:38:57Z), 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/DEP069400116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x917af08cb6f6143b3b159ffa7ea9bb1a795cb5ea63e6ca6f48bf6bb704714a26. 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/DEP069400117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5089199fb0ff0283d233890c017dced89bfbbd2f0a16de60da842e3c82c6b75e. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:59:41Z), 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/DEP069400118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a063d4a301807ada109ab2652ca2f82336745445766b919529e4f4fa09b5509. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:18:01Z), 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/DEP069400119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06a773e4f64f88ebfc2d2668c42709c37cc3f4afba0097e8ae57dc7f7f3ecb6. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:26:30Z), 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/DEP069400121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa589cc6e9420ffcf237baf0440f18db294cba2446d097670568dee4db2bf8371. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:55:43Z), 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/DEP069400122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e076e043041a79ad1936236b7d19cf2528d0c2a231127be6d686050fdca90e. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/DEP069400123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081dd8bea67e194fe53da9d94d22eade37178ce987aaea336d802fd728ea3148. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T16:02:12Z), 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/DEP069400124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344203df1bc6a2cc4bc3c56aacfba1906a8fe9744a8edf7c1eafecd0d1203dcf. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T22:48:28Z), 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/DEP069400126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0f800a94adf322978a57d0f37684d2522e0e6c19face46798ac934f03322bb. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/DEP069400127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64aaba204bd26abde1480f3b75b48f5a88ed8f0c09261682ea7aacdb8e8362b. 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/DEP069400128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1d3aa83ea6f78d37cd68101406de49e4cb2b51ed409de396681dfc29f7b343. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRX282453982.