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 0x8859e271b5255a547a4e207e70be483dc63345ef51fc417acf61b8d63074cfa6. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/14130f03-8dba-4954-b9fd-1124d591d9fc.json and https://artists.proofprofile.net/proofs/artist/14130f03-8dba-4954-b9fd-1124d591d9fc.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 0xafacb583bd0b4210f5dc29e0115132517fa592163803c5e8d1f251c98e4de580. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/TCAJA2472838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47d82273462b4efe0287aaa90b01a4a55b22dbd37fa11d474f424b9a602be62. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/TCAJA2472841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd469fb624878bf9dc1a93eb435b8f7535235453221d34281161049e495a6b0cf. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/TCAJA2472842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f1128d32d2c2a8cf042f3b78325090df9a0b372187ae7787ecfa2185a64142. 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/TCAJB2472843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf17da785e3508e7c74bdf417401801601f24ba89823965686f0c8183a519638. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/TCAJB2472846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e976f5963612a78aa7f37ede3f39ebbb6fbfa5e4ea159e284dc426ad8df47e. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/TCAJA2472847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46139364ce9a85002ea70be08e7f6b3e87a950b8ef36afcf0ecb7bad9a37ef07. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/TCAJA2472850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae2443e404b469334f649e9971d47002e27b016c1ae941aaf2e6957762bcb68. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/TCAJA2472853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e17ff55bb37bfc9f34428371c47376d7d5337827a202a45d804cb076b027f7. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/TCAJA2472856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1f9cb666c85f74fc6fc09cc2688a39f031b8d205840ccbe95fa40cdcc98f97. Chain 2 (Bitcoin): anchored in block 957680 (2026-07-12T09:07:22Z), 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/TCAJC2469016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97cf1c1991f79dee4a5fb0d0d068c9c798e7867ae118e9ec6effbd6b7aa9e84. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/TCAJB2469025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa27061f0a4b04782ef96277b584b4f45e894763a9517ed6be0ded55570e23cf9. Chain 2 (Bitcoin): anchored in block 957668 (2026-07-12T06:54:37Z), 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/TCAJB2469031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dbb18ecbc642071c64a2ef80a519fd30c677eeffbc7a2885554cc446debe3c9. Chain 2 (Bitcoin): anchored in block 957668 (2026-07-12T06:54:37Z), 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/TCAJB2469033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6fb71db4f132dfc4317b174457b909bb2bfc340a6ae8fdb4ee75ce7695d091. Chain 2 (Bitcoin): anchored in block 957676 (2026-07-12T08:20:25Z), 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/TCAJB2469039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ec6daa3af16c4d6d4b4c26cfe44802af90b7dab9556614004adc00d726bd6f. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/TCAJB2469042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf5120ad7bad2fc22e634910117d0a4c8d2da381858d0ca0f2fdc9d6647453a. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/TCAJB2469045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b27c47fcac596469cc899c6d553b5ecc1866cd83b4f2cc13afea4adfd7ce2e5. Chain 2 (Bitcoin): anchored in block 957676 (2026-07-12T08:20:25Z), 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/TCAJB2469048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67f8c0e775416d220e282046f051d1c2be8901866481f76d880927da135719d. Chain 2 (Bitcoin): anchored in block 957665 (2026-07-12T06:13:49Z), 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/TCAJC2469054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b9b15171434ccc184b2a75bb77ec00815b525d132db0bb2fea5713bd3526a9. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/TCAJB2469061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf5120ad7bad2fc22e634910117d0a4c8d2da381858d0ca0f2fdc9d6647453a. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCAJB2469045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6fb71db4f132dfc4317b174457b909bb2bfc340a6ae8fdb4ee75ce7695d091. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:43:28Z), 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/TCAJB2469039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b27c47fcac596469cc899c6d553b5ecc1866cd83b4f2cc13afea4adfd7ce2e5. 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/TCAJB2469048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b9b15171434ccc184b2a75bb77ec00815b525d132db0bb2fea5713bd3526a9. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/TCAJB2469061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e17ff55bb37bfc9f34428371c47376d7d5337827a202a45d804cb076b027f7. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/TCAJA2472856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafacb583bd0b4210f5dc29e0115132517fa592163803c5e8d1f251c98e4de580. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/TCAJA2472838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae2443e404b469334f649e9971d47002e27b016c1ae941aaf2e6957762bcb68. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:59:38Z), 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/TCAJA2472853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47d82273462b4efe0287aaa90b01a4a55b22dbd37fa11d474f424b9a602be62. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/TCAJA2472841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf17da785e3508e7c74bdf417401801601f24ba89823965686f0c8183a519638. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCAJB2472846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f1128d32d2c2a8cf042f3b78325090df9a0b372187ae7787ecfa2185a64142. 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/TCAJB2472843.