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 0x57aeb23eb2f02800043bb4a895999cb578d4bfc04194d34e7499bd030a358e97. 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/56ca3c87-c284-4fdf-a9c0-781944f5fd9b.json and https://artists.proofprofile.net/proofs/artist/56ca3c87-c284-4fdf-a9c0-781944f5fd9b.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 0xd657bf90310a7a6f6bfcb54443abe5464672a83c21e12faf75ef39ef7b9ca8bb. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAEX2047805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd657bf90310a7a6f6bfcb54443abe5464672a83c21e12faf75ef39ef7b9ca8bb. 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/TCAEX2047805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b2af875edcb71bfbbbd0e4f8123d77f4d04578a5c6af4839ef9dd01efd6205. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:04:58Z), 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/TCAEY2056141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b2af875edcb71bfbbbd0e4f8123d77f4d04578a5c6af4839ef9dd01efd6205. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:39:35Z), 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/TCAEY2056141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2dc3282fba2921061981fc700fb5b35a47cb483d84ee92e3696e1039593ee6. 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/TCAFB2025625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5e5dcc2600d7fc9e4d15209a8fcd02f10d3cd6ca19dd5a3a2fabec91899a48. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:28:02Z), 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/TCAFF2030034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91bc5842a9576f9ca0f3b2bcb816232211859821cb8f32a712007501499e41e7. 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/QZVEM2305725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x166e00e43c9cc1e25c7e895234903eccd3d24bb4356fb6b549b0c022597bb262. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/TCAFO2155375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e6143a3083c69d53dc4f32a7c58dccfd7c0a71e7d62fba1c6bf5a0485580d1. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCAFP2155152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555a557c7a6683afae3a793ddd2f6f69af61f18e065ebaf9bc6451736e5f848f. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/TCAFS2173478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6ddbfc868134d849d5f0354a966be5163418d8b715c453b11cb73f3f302e62. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCAGD2256495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df41160461b5f977dbda44e42b3be65c1b6d774088a6490772c012d649b0965. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/TCAGG2262026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e49c855cffa48106db40a31a1595a4aea03e8584023d2c2c0c9d7b2d82157f5. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T06:33:00Z), 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/TCAGI2244448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c900c91242ac972860673f9e962108e9f003d1f35a56e4f22d88815b3d82aae. 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/QZVEM2305726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a32f75f74ba7ec50a63d581aaa41e37d1d9613acf9f6cb2095506f0770ca957. 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/QZVEM2330468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb3f24b19c2f5d1a037c3a23f0d24714f402a0efa6cec76c14c7145e660be30. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZVEM2351996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1501531da966b3e9f45d1f76d08cf3231adf484c4cff047d33bdebb2e64eb25e. 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/QZVEM2379241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f74650278477565dd21dda6cad2eb7f1cd831e736142d3af5b4a8f5a662947. 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/TLVEM2477398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78425f9bc875f866daaa02552d443bdbc5044adc96f0c2f1fa84c93f86b8cc3c. 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/QT2VB2434156.