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 0x927bf79bcf201957b45cd60b8381c4613bb02dab719041514dc54ecd80a02e1c. Chain 2 (Bitcoin): anchored in block 953783 (2026-06-15T12:24:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d511ceec-9df1-490f-bc43-c3948f6c9c9c.json and https://artists.proofprofile.net/proofs/artist/d511ceec-9df1-490f-bc43-c3948f6c9c9c.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 0x5a667fcbe685d7c063e63f9b1dc72ee0b6a9895508bc71707459f7abf70ae4b4. 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/DGA0H2301206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da750f454ca7a6bf083c1e410b56e17e9a11a551322f85ff12dfb5d876e339d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM3DF2250351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe83366133c4745f0edb65a3d427c2ebda74db2315f411577c3f22eabd8c1ad6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US3DF2433479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0c2236fb2708b1f0dc994f6c181c4adc00971ff73e080f42a83c6c33246f8e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US3DF2433425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64f3e0070067e3cfbe6ea83ccfbad3e2bfae8c41a3144547ec4a18edb7b0014. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US3DF2433455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1635b2b4d6898bba71b4f66201d8acf1a2097de643b07c70c746dd0d0dfd734. 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/US3DF2433457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d5bfed847332ef2ef36995e2812691aacf57be62557b8c2c93d5c8f8cb5885. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GX8KD2555372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14dbc3d6749b7600826022fab5fbde0b9d4ea77a1f1f70200d05941c98dd5a97. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GXFHP2476567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b0b6d25e05c119bcce1c30a5225c16bc17adc8c928c5f952b81f805838a6c1. 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/USANG2441784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b7a050375314bb36e986f016fbfca6a795fde61cab1d4794b488e3d030b268. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/US3DF2468144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0c2236fb2708b1f0dc994f6c181c4adc00971ff73e080f42a83c6c33246f8e. 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/US3DF2433425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6f7dbe4d4fd8949caa793b79779e0f439bdcf628c77fc0a256f2401b798d73. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QMANG2212723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3730acabf9b618cd1c58957b9e01e7e93d95487ed9cba6c41549adba5eebf510. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM3DF2225564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e57b0e68a3e81bd45e17bd2344e808bbd529cc1d8232330fddfa12ea14ac375. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QM3DF2244428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7c8085803f6aa24b62ad48b86771b9228bc06b3858bdd143037591bd7e7225. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM3DF2243864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb450445dad3ce14a44373ceea821f49000a622caa96c6be94d5af5143e6d4c3c. 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/USANG2243046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ad003a3a00b11b22b0450827588b8e28d847c0e7e58a24992d6da6675565d5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTBA2283114.