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 0x40b2de3cca9bad88aab30e21fc687ebe5d5484a783a651c473962de61ae992f5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d829f043-b1c3-49d8-b118-eea89835f34c.json and https://artists.proofprofile.net/proofs/artist/d829f043-b1c3-49d8-b118-eea89835f34c.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 0x0bb5095be23ca7109f36d910a25fdb221b4ca76cc2cce026f58ceccf076ae246. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FR2X42022224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e79922793527f5fd80708d8f772aab016f46c77aea355c630ef2af3e0c1690. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/FR2X42022225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ccfb406f2a3360ef094b4490e8f70328d8b68add8b2bc6ba681c5dd039b849. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FR96X2015481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432d4c0d0f14a0d4bfd3bd37a6e64309214761afb29315f7941e56077b4a12d9. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:35:57Z), 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/FRX202086313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1551f52f0904dd60251a7faf9231dde13aa5b83d259fd54c70f5482f713245. 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/FR26V2062501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8541365eaaaad0120c1a1a81f4ceb3c90c0b8f515e70c5aac2318ff5a2a56a26. 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/DGA052057527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9ab0cd620670909841e1068ecde0db36c448823373a3925a44be68be06a847. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:28:51Z), 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/FR10S2143975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7438493b0bf473c129144662f7472e93eac03dbcd6d4d395e3e02245bfe3c996. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FR2X42147280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5a3e0cd7f317576d68cd127b978bcdd7d6f77e30d4489a1a1c733445eda0cd. 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/FR59R2130125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e94e0ff206edef3d5e6f683b9eaf7097fac1b8ffbc8055f1da70972cde951e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRX202192845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005be958723db19b268567bf117a25a7012c00c2673ea1915be959081ca411a4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-20T00:17:33Z), 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/FR96X2165293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12437a696ce1e7a0ee9f5d04f78d61812cd77fe24502281e55d6895f5353839f. 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/FRX202192846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ffa38621c29d3710f444d3b0635a9e0c6ee7cf6d6c8292fc3f6f593a690c244. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:24:28Z), 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/FRX202192848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed19943e6b861c6af5c69e0e486581e8b6bd56419f0c348b5044bf17f8034a24. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRX202192850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf911d4281cdae972d56ae2d7eeb8f60aa71f92178e7f530a2df6723a740bf818. 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/FRZ052200446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171583030620c2f64b30897d8755253cb5b89885c466f5b944570a2b4f914e69. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FRZ082300283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7a5eafa2f756a15bf1ad22a981993c0b4be5f2ed116dba84ea257da9e2dbfc. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FRZ082300361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32be7e09a2713455fa51d3cada04ecfa1595eb0f174c743e43cd504493e4153. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/FRZ082300362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20a4206afeae8dfc93c82eef39b9a6db0ca3e7bbce9ce4bf91e763fccd8a6d5. 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/FRZ082300363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7a5eafa2f756a15bf1ad22a981993c0b4be5f2ed116dba84ea257da9e2dbfc. 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/FRZ082300361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20a4206afeae8dfc93c82eef39b9a6db0ca3e7bbce9ce4bf91e763fccd8a6d5. 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/FRZ082300363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae01cf8347b3b3e6c443495a1b34924ed5ae0f5302a25c1cbefc24921a1fcc7d. 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/FRZ082300364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b50f76e5e04bfab96379ea62a0b915404d67ba1f51ff050c094ea7494f53775. 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/FRZ082300365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb891cfe8e8455c734212e5e6791cb7e26c386becda4a5bad47a96549d636dcf. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/FRZ082300520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164b4855c9135defb339f40ec20ce07b1f5c2451bc5f90c601ee9a9e873725ad. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM6MZ2257543.