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 0x20b57d1091251e3e75e5ad0279fccd425718f08990e8bbbcda47d116283b21e6. 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/8cdc39a6-945f-4ee0-b185-b177170a5d08.json and https://artists.proofprofile.net/proofs/artist/8cdc39a6-945f-4ee0-b185-b177170a5d08.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 0x68db855be721ac2053429969a4a640188a4d1cf05aa5c908bb859bb754bc6fca. 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/TCAEX2097958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc382525da19be1bc0fd4c7acb815d0f4028a2cf481ec9409d55e83ed99c1498. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T03:01:31Z), 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/TCAEX2097964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd56a5b1eb311eb0ea11e430631519cfe995f0cfff103055d222490342c06c8. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:59:42Z), 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/TCAEX2097966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3303d23459981190d925f6f043db067a49302f2ab81fa19d46bb74e743634aa2. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/TCAEX2097969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ba8c05edb63adee2e15199a59d8b3ec9e6bd66ac6edcd360b45ae7ee31e244. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:41:57Z), 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/TCAEX2097973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34bce6566ed8358ca9ff7207fe2f5cf9daadd069e3d6ec35512ecb5e8116870. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:19:34Z), 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/TCAEX2097975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1e3c86d0429f6b554e1b7be739bc692d8170e89fd49cc11834743db368d338. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:34:04Z), 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/TCAEX2097977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01cb0baf7be0cd3e2b0ecf792fea09e62403ef88b772f84dc2e0192b1d91e37. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAEX2097981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345fbc5fb3cf5880021526431970e98bc344d378376e1d8487f7c30214c38a3b. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:44:18Z), 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/TCAEX2097984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc64b31f37f20595b059631ac50ed885e46d09a855df4e24401a9b94cf904a91. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:01:02Z), 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/TCAEX2097986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf529b217ecc5a15a6b5b990fd612b5a222ecab40883e527eb5ee5e173769eab. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:23:45Z), 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/TCAEX2097988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33a2d8585c87ae65a0635fb7be33613f56c4b346a288388b568c5adf37b7081. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:53:14Z), 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/TCAEX2097992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed093cf56278ed2f6c8526af5ba13efbb7aeeea246a8bbfa1f80b7a0e920e460. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAEX2097993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c3bd602d2d54233cf30331598b9a3f8093558ff36b7ebc325fb55912304397. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/TCAEX2097996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f563596968c1baa3f53a4b2ecb405e91505b37e207ef29e05f954873e8dbe2. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:58:04Z), 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/TCAEX2097998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b195751079610bba000058303c38de26679fc6c73b0ab5f8a286b6f3b67db6. 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/TCAEX2097999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02cc25bab7ef72e37906901944a08e2047d650d880704964805ee887d9f038d2. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:04:50Z), 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/TCAEX2098001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76aa45452d3e37041dfa6523a0bc4572656ea5fbf74678c8c641b6ccc1e16a10. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:10:28Z), 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/TCAEX2098002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b3a8688fef59f85aa2c8076eda9366cbf762147ab711dff26600006fa16019. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAEX2098005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23e233fdbe78bc9cf4ab7b0d338e74818f137797ff084b759f29813501faf8f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAEX2098008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf285d7e2efd268d805f338b8603112d50b9069dfee3771666aee405bc06c7725. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TCAFD2066845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3392771abfeea6ab667d5f4e70ca408d41e3be3cc789d55f64514be92e059e70. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/TCAFD2066848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172477e630705d874ba10541d2120b435af42eb8ba130462aca9394c307a6c8c. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TCAFD2066850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578e1eeef01d373fb0d5bfc35ec596cc5b3a6b8d8ad575143cdd966abace5568. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TCAFD2066852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15471fbd51eef6038ab724e1348470814ebbaec4385853c84dcb6a49c59a5c18. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/TCAFD2066855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38cbb16e917dd105801de2c8680ed39a723e8dfb2e0108803751109b4f45f120. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/TCAFD2066857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f16b0d667d308d53faa5820a5d6fd379bf54d6f0ced3ec73a0c65afd6cd448c. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/TCAFD2066859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d954683943fff6cc3e7c996d51d8c5cf89f8e826c1ec57b513291eb2051ccf. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TCAFD2066864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30fa87106cf304995a5f17b7c294ba34a00cef49b917439aad6e4d711d9a35e1. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TCAFD2066866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5949fe87dca1be3bf47ab98b0c5423dca808d21e01dc8b52e5eecdab4fbcb9fb. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/TCAFD2066867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ff0ba4d9c4b65af8d6f77d9f3cc639f7ab9a6d3bf78fca5a0b15b87bd637ee. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/TCAFD2066870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe159f325432e87d49d2df08a6e7316bd1d8a39467f2b7563b011296ab97c34fd. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TCAFD2066874.