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 0x511259e6536ddd4f6a699025977de9d3f07bcef14f1eb0b1e95ebba011979120. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/02edc4fb-8cf2-41c3-9d81-a3e3fc572930.json and https://artists.proofprofile.net/proofs/artist/02edc4fb-8cf2-41c3-9d81-a3e3fc572930.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 0xd751ca62b07689e838a3e6d0174b7f091fee7d63af6715f9984fffdd816dddc2. 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/DEW241700466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c984a216fbd5a6a08d43c468d812be0287ff5431129958cf9e6d5472e93c990. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/DEW242100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25432e4f1ebf8a248e8eea0bad57cb61686e74fb3e1e2ea3c334f345f8109346. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DEW242200103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7056d762bf86ecdf08e8db6d9ed259f1ac80adbbc10dfffcb09ff38ab6e278f9. 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/DEW242300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802d64213ef6ed2636c57de3e2b6c4f81a1e9f17b9473fb9ed7e9556169d0230. 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/DEW242300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff688582b2e7c3abd486dc9ac5bee33f9d5bd4393e3349066363b600bc23160. 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/DEPW42403801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0108fe678033d084faafd7496b2ab0975cbb12d6285f3657139b69c61e7ba9a. 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/DEPW42403802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb3d455a759d7d2f4d26f7d689a0b5d6110c3a95e7cae63b75296195fd4fe2a. 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/DEPW42403804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843fc4e856415f07e5453317e3ca8bc492817f1cba8615143710c38f8cd47650. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DEPW42403806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf619d7cb281331062807f07d24ee2b084474c3d04f1845aca2d0a0a8e8f91e. 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/DEPW42403808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb97396092471e9189ace04a5047978285c8841ada6bea421057464aeeb8010. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/DEPW42403809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b167f000a78ba0057551e4ce60bb9e77ca03593bd8e76133b2c0487a9f8b77. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:43:45Z), 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/DEPW42503821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcec00aa7d5cba16fa9d3ba1d8e4b443cd2c5c8277830417cb6ae8f5b036aa65. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:02:59Z), 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/DEPW42503823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc24eb81f4dac8b2669ef6aa2345284c173f9c92ef4abd1d99414b5263880496. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:41:17Z), 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/DEPW42503824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a39d47ef80675aa47d3b738e5be0591050d91bb979863b9b21e542d7f52ddcb. 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/DEPW42503826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5761a10f99d0c0e515cd7a892ff9538dc4100709750f242c5ac663efeed6394e. 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/DEPW42503827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2966e97a3f32ba36f06f4898e6f3f7295f25fcb04733cdcfc31be6558a667b6e. 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/DEPW42503828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb97396092471e9189ace04a5047978285c8841ada6bea421057464aeeb8010. 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/DEPW42403809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ce866f0408545a49776b456c3d70748c7c90bf61c16dbe5951e72aac80a3ce. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:41:28Z), 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/DEPW42503829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0108fe678033d084faafd7496b2ab0975cbb12d6285f3657139b69c61e7ba9a. 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/DEPW42403802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b98ebe371aa6f110736100ae78bc4b17b4b3aa322fa64b59e599dc15b8aa82. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/DEPW42503834.