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 0x462b62e280843cd138b9443c7a7205f8381fbaedc01b49fd56f9eb79ae46ed98. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0a8ee189-278c-4dba-a232-9c43c975f615.json and https://artists.proofprofile.net/proofs/artist/0a8ee189-278c-4dba-a232-9c43c975f615.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 0x6a75f1158fdfd305b3a50f10b09dbd3bcd0bc2dbaedb1c25c46845434f06121f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZFZ42476188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac10960e2a260746b7c9044af42281edda5017ef3d858218eee5b34f4f393d55. 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/QZFZ42465291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0fffb5e4d2866ba7163131a4e8f466dfcf7d2415100e2d57fe75ca0c015824. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZFZ42465284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215caad0b414047ca108e1ae556810ab5e54fed4237aa11e20b5c5a07884d2ae. 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/QZFZ42476190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579493cab143acc867dc506e5c6179d3dc6d389ce70904e6bf39416728aa8f19. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZFZ42474142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00bb232720f17da4d46e84f5b0abcf9b0439de88e7915eceeb54c7cab5c089dc. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:55:33Z), 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/QZFZ42465287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07be9a8767d2e81d8c6fea115bf822ece17d9a2a16741dd293469963ede240e. 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/QZFZ42478333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ebd417db3a672edc5181b42898536e6142165c7e956626b2716a2b56d635996. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZFZ42476186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6647b347b1b089997c7fe326aca17c56cd75a11a2c209e10ec63b8f0443d20f0. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/QZFZ42464873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5d66c22998b1312e3517c3f0ab72234a54bf2bca9c9d44deaa40ea2c2d694b. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZFZ42464874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c30c297170774ff470815d29c7e6f9ed9bec5d2a84fcb8866be93e8fcecd66. 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/QZFZ42464875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511fedff1674134bc059e869ecd47f3a61d7b004ee07d202b66eec879c96544f. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZFZ42464876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4abcaea85bd620cc2af974f913d6b5e12cca7a5bfa3980b1a935aa190a74ee. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZFZ42464877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282fad390280470e94139d801b75a09e3ecd0e941807823690dff6e76b5f22a5. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZFZ42464878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c403288e58fd901f3144bcdf7b0e78056c20a961477b58cb7648dc9ccb9f73. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZFZ42464879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdcf8e66c6feeebcd10a80602662efdba8164eb256c6a2b2adef3267f1b01f96. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZFZ42464880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c85b1c34c7eaa0a8db44f5f290d080b020f1295d0088c0a662f9e47d89d15d0. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZFZ42464881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2143340bcd4b6dacdee97eab1f2517440c348032aee0ca14f444d7c8e13302. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZFZ42464882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b476575fe76b9beb33bb4f345a3230abfead7f124bf23a099f814317739322. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZFZ42464883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d423211699c0b31ef9ec7b87df6886ccd902f00964dd3d26b068294ec6be59. 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/QZFZ42464884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb277b345c70a6392a303fc9648f9320e0165d2418ef717faeb4c16fde872fd00. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QZFZ42464885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1672f77cbc15d696f7fa3ad280c0fa3be4350f20e15a24139279bbe84c9db5. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZFZ42464886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a7ce50de46d36ead538148a4b11f392f6dbf32212683b8321f0d7a6162c501. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZFZ42464887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7df6c8c3fcef8dcd08106c0fce40c8b26eef953d67ae946ba67c425d34aafc. 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/QZFZ42464888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8b00f58f8ff3b37cb59f110e0e89cf4dd5508f422d57e97da3f2570e8f3daa. 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/QZFZ42478356.