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 0x25fbad0c4929f7145303c56875d2a0bf4879c2a15464820027957d46ccaa8b58. 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/7c4c8500-13d6-479c-a97e-d1b4b1ad8f20.json and https://artists.proofprofile.net/proofs/artist/7c4c8500-13d6-479c-a97e-d1b4b1ad8f20.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 0x282d6a1843250ccbc690e1ff3677f7405d6d0dd6df637a09814e762e53f3ea74. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/JPPC01900750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54256e3f9e4458cdc7a72f78d58ea9c0091a718a056d3b2b3e2b6cc3bcba078c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPPC01900753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b55e6cbd57de908dafde45b67a60db32622acd6c661c5599046702cf7d7628. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/JPPC01900754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7360c38b88890cae58d865bed2c0f6e1e09b5307bea0a26fe65fb34aa8ae5f84. 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/JPPC01900756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b47cb510d576b6468bace37dbe88272fe0254dfb20ccd2fb9fb5e7bc0585bf. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:08:00Z), 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/JPPC01900758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d3bb51d9cc4aef4e7b88421c3886ff7a34dfb823951e02d836ac863c2a9536. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/JPPC02001917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0963894c8ce61a94d1c0e9fec87556d2c2b56385a84a28997301c99d3d995651. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/JPPC02001918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0d38447cf4293ec19a1499cee2a49b8d62880e5732239e9493a563ec19a0f4. 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/JPPC02100705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447109097a3652267a90ba8286cec156a25acd9cbc4a2ad876e51cfdc6cdb72d. 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/JPPC02100709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4343a3243009d7a41871ea5dad5d61d064b645fcad70b1b096a1b372021032a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPPC02100842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca1d09a9e92c78c554e23e646c58b1ee3bab1bc5bd96b1ee8122f2856029437. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:06:37Z), 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/JPPC02110080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0755d500fa6c5d76143f3acfca1b013d0910fc04a901bca02d05e874aebad3c4. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:18:32Z), 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/JPPC02110079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be19363b13d37a72cb0f4c0297a2ec3bcee2faf4b752ef7a0e9f03fcc1a155f. 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/JPFL02101170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58b391fb8c003d2a92b3135bedfe0a3d12fb170cb5d24ac542c8d622555f132. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/JPFL02101160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba312c5a227663c2b2cda7d4af49f4d75dc4305aac88157dff3be637c2cb5ec0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPFL02200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f89230ded2dbf7fddc30a12c28d16377c83d792ce211146b3ce157aa3b2d8ed. 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/JPFL02101760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad28e1f8ca94d1b0bd2014a3af6424e7f494ca027436c78be2292166b9f9f8fa. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/JPFL02200230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba312c5a227663c2b2cda7d4af49f4d75dc4305aac88157dff3be637c2cb5ec0. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/JPFL02200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7324934533ce6699d9a82036bfd74fcde4e718aede566b2b946c98e68baa95. 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/JPPC02100843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f89230ded2dbf7fddc30a12c28d16377c83d792ce211146b3ce157aa3b2d8ed. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/JPFL02101760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58b391fb8c003d2a92b3135bedfe0a3d12fb170cb5d24ac542c8d622555f132. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/JPFL02101160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be19363b13d37a72cb0f4c0297a2ec3bcee2faf4b752ef7a0e9f03fcc1a155f. 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/JPFL02101170.