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 0xdb96cbe99e18ff453dddcfbe7f71f1eb21231a4e00c63d2fd2ba330a184aa780. 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/d36aa742-a8cd-4c68-8398-e3265b987688.json and https://artists.proofprofile.net/proofs/artist/d36aa742-a8cd-4c68-8398-e3265b987688.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 0x5304cc0cfb811a0e9a2a5e7eaf0b76baea6ec81f8e48929db24262fa700ba9ce. 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/QZPJ32347755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e592827436905d9b570cd2d47c91ea0d52cfdc5a9116839a7902eab8b5a140. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/QZAKB2401972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde67d3ec87cf2af79ea53f148fa32fa676c276eea6b83fa75d718af8c10e2e4d. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZAKB2401975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4900c54a5bf4ceabd451b91f418109aecf91cf2f30de9a4d30be32ea429be20. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZAKB2401976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639e0925ede08feaf9df19846cb1a6a58665ad438ea051cbfeffffc9574d9f85. 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/QZAKB2401979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4183a54486f42cefdcef9cf94a485fc7e6ef26675c112a54f09d55da12bd5c. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZAKB2401980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dce11e87cc4cf654dad709d8defaeaefc4c1c5997a8a082418ca4e8cfaac3de. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/QZAKB2401981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33e53e3e58074873e0be404a990cd991bac267b8c9a6a61f156db9fdd4b70ad. 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/QZAKB2407061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa96064364f740d30d1e75a591fbe46f26637586791f8fe7917220c4a05d770. 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/QZAKB2407064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4868b7a326c394e85d78f2dc01feb5f3f9714c188b0e003ba5e67d9340e0ee69. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZAKB2407065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeea5ecbd4961fe27173f15b21772a4c7a70a990c3235a771d48a9426b64f911. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZAKB2407066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17d0073c0b7dbcb36356545d1b71863f94e7b37d9c238b5f2a7769fb3a747dc. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:42:57Z), 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/QZAKB2407067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb893d9b9c57c041df54e1b47f4a6027ee63ba9e9c880a7826d33e129d141f1a. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/QZAKB2407069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b7298f70a9a63f1a5c9342b6366394185f92e915d864a0af57d40ee46e934c. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:44:11Z), 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/QZAKB2410580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df9341193cfbaee70582319d274850d75ab12e6880d9bec0648780397fc6b5c. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/QZAKB2410581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305601b7f3fd70ebbb3f25b6ac6bd2b463918f04a1982630788c228fe07c4a07. 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/QZAKB2433771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49fb5a265de757fceec65e9a3d97ff373f279110a4f2b7c665c3f4c6de942e47. 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/QZAKB2433772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x772b943c9c699d7440b06cf5ccbe4651469b3168aafac5ec4c875b2f314ca9fc. 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/QZAKB2433774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a9c60fa99e617fe6342943758d191567b2be23fcac4eeca3f7d44eedbb5eb6. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZAKB2433775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb637f7fece9233daf8c44dbc38de45c730dbbee62376e2fd57634df660afc42. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/QZAKB2433776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96bcd341af21140af150e6a3aa8d1a8ca3a1b6fc1b3ffa6a370d871378e7215b. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZAKB2433777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63434121486946fe432d5b1b964b59776ca4ec9a14f726a8cdca172fdbd85945. 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/QZAKB2433778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742d5e9da734e7f6d0a43a25cb3369eebf54c4878b0628d9b19a72b59214c8a0. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QZAKB2433781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d48b3e73ef875cd7466dfebf059b12d047cf31077674cbad5addb54471a646. 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/QZAKB2433782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf434da3d1d6b840880d2c9243b3ed54d74358c6fce657bbecf102b7298238236. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZAKB2433785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e40309002934b670c004aabcbb81d63af4e908e612991e9a1d91fb411d6980. Chain 2 (Bitcoin): anchored in block 957569 (2026-07-11T12:44:25Z), 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/QZAKB2447334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92760e65be2f60dd257f70ae314716bcebd2e2b7976b29ecb5bf50ee2047644. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/QZAKB2447336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9c6a361e7229fc1a304608594bcad0ce37c9749a9f9e57fc9c47e0001de634. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZAKB2447338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552bda1106a01516fb2a65138bd2e42ec90475dd7761245debd58f8f49f84663. 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/QZAKB2447339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6cb7460bd707fdfefbb1ad5a6b02f54150cbd381083239157298d389a64bde. 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/QZAKB2447340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a913de277ecfbc62d2dd0cdd37677640457bf5d59a1fbbb9305a26393352084. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZAKB2447341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeacc5f1b0665625a41804459798704f199f56f8e44bd68df3661e1becde5d26. 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/QZAKB2447343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33c2f85d15eb989eff76ac90430298cef33622efd0aa1175ed1876a6de8ca2f. 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/QZAKB2447344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8da0883bed4db3ec55881d02f8efe97127d47ae38e14e893fbec5d420ba5ba. 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/QZAKB2447345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb32478d8943e4b06ff75a1e3c8bb71afe8d5fa802c784bf9868f106ebf2b20. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/QZAKB2447346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23bf5dcd91be6b631c5dd2ee9aa31b69acafe8cf3dada1ef327061d920c55638. Chain 2 (Bitcoin): anchored in block 958677 (2026-07-19T05:47:23Z), 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/QZAKB2447348.