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 0xaa4602b92099df9a163ef5384451ef439bcfd401c451c6652358831304e475aa. 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/56ae3792-fbee-41b6-99d9-26d50a070d4a.json and https://artists.proofprofile.net/proofs/artist/56ae3792-fbee-41b6-99d9-26d50a070d4a.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 0xbd295ab6e4c74cc58aadbebf4bff21836dfe5800af0cd86d6efb4ab25a34f00d. 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/BRTRB1874425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0e308daf76861585b2d86cff15e1d8f98dbf5168776eee038ae4eb3ed209b6. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T04:59:56Z), 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/BRTRB1874427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf9541d44041b7432979a267eb7a28b6e83f1553fad61b47935cc51aa6b248e. 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/BRTRB1874430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2364e0b768f0d28b08365ffc12166e1fc2b4440ce01b65f8f3df98c5ee46ad. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:42:21Z), 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/BRTRB1874432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f21661907c71aa276a4ca319e6d3d84a1960ade749dfda918c1c1ab1017bc2. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/BRTRB1874434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc50be7cbbda87424e214792f73cba63179f9ebea42deff12ee66577dc76cfc8. 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/BRTRB1874435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2883df808503bf1c16489e54b9d8eb69f4dcea50cf46ba09d7acf79a1dfd6330. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/BRTRB1874437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c5ce55146d999c6c4ca1ed834b042664e7b6236b0c5347a1e7e27180e57b65. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/BRTRB1874442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3738a33ee238334fe848bfb67fb0a992bd71ca7fe4e5efa36eea2838dfe51c. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/BRTRB1874444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4ddc3cfc02003a9037264a0ce582dcb88e78fc455359c8df2744d5867a1642. 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/BRTRB1874445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e2ed9dfb6d9c6a9fcb0d70c3af3706d00e7a2fd56ca9cb17029feb0853ba99. 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/BRTRB1874446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eaa421a17f5614c67c98499acbdb9305b00c7333172bb94cdc151f4387f08e3. 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/BRTRB1874447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc49ae694ce0a365a383c9ca772b05fe7bfe64bc42e4ee2f59a98590e8beaa91. 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/BRTRB1874448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63142c50b5360f1b3e02cda67723ed86753e0066cc830a197f24a3077c621b74. 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/BRTRB1874450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aaa3996995152a8f18f920348156f38c16be189e6e4a5d403b85b6bf8a14b6c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BRTRB2079394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb274867d7738f686aed8a798bf8e97f3dcd456e3548be1d34771c0793ab39759. 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/BRTRB2079395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027c4607c9994e62b191fb6e1109b4180d06598c9bc1348a2a1a5383b6c0c239. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEZC62104577.