1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x73b1f4b17f5ab782f88498eb84fdf7d8d6b38bb778e8298082d3891648e4cc87. 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/93664fbf-c572-4d75-8fa0-447f7aa5311a.json and https://artists.proofprofile.net/proofs/artist/93664fbf-c572-4d75-8fa0-447f7aa5311a.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 → block OTSBitcoinBlock must exist at that height 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 0x498e08378a400452539e186e5c8176c12d044db9296eac10501373ab13947ddd. 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/AEA141002262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a6a54a6fc08e0b3e2eada9369c90db393f4142c43bb25ee4a1309d1fb21fc1. Chain 2 (Bitcoin): anchored in block 956426 (2026-07-03T01:37:49Z), 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/AEA141002398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7acba40a74942a59f5d26074625b4fec3f8fd2b7389a44f49407904f6055f0. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/AEA141000522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c66eef376ca026f40b0a7993c3c779ca2e7c5a46071ffec0e7ba5a71923ef2. 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/AEA141000516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02afd58dc062d84ab5d7d08bf044322c9fb9c8443b2fabc0475365111a96f94. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/AEA141104235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74645d92c4b592745584c3a73e329cff380ff57790100ff513c09dc4bb8b1da7. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/AEA141104238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaccecd22298a3466cd1a9da9b18fd153305b9cf8b5eb3b7048a04af9f1ca8d25. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/AEA141104242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c6ab95229ee9a708c9593953585eab9fd0cd5f4620297f59ced4ebf27958e5. 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/AEA141104246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88654905be14ec931bd77c97a6e5425be7b05e40030c807b91bf3304886a97e4. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/AEA141104248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6910ac793232924da5516d459b97b7712d0a7c7ff60efc88ea1119d2fc3291bf. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/AEA141104249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2993d99438d9059b269a833b84b882e8d4fc647a86d2fa7d37d96a2257246c6. 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/AEA141100612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b01fa585da2347c398c93ed80e0fb4fef4549eced0ab23047fd69041b0a355. 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/AEA141100567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc5aa5fcc73b1a82acc06bfc1c51afdcb02d4c0de44348fec0e382b5a415496. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/AEA141100225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8943ae97f0ec48fc43a92cd2a064c03561f82b64b812c09bf2bff49c53262471. 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/AEA141100208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3026f9eabbe727589600075351f596498e2fc8f839b4ecfc3c1357eefb004a. 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/AEA141403410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6cc43893917a8e48f7c9361f544c985c0e2a9791880f1a44082a21ae9467cc0. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:47:47Z), 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/AEA141401512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477d2972395f3870155f20276e0c355ba5a71d9ede7a5668c53aab13f26422cb. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/AEA141500376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2efc8176d6ab3ebb5aadd633e0077a70d3ba5aef4d49f9a44bc53d6d7b0b47ce. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/AEA141500557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53d4950695a1c4ac9762f4da4c39c40dd9e035b4ac63afbaa9e3ab08041073e. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/AEA141501236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff23cf4e62f98b287eb176d50ad13ccaf34348f8ebce366502015f02ed4f4f46. 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/AEA141600118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f54715b7bd72e0a3d8c3ea611e3f96fdaa120be0e81ed28abd06164c4fe4fb. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/AEA141605270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee6430e7dd1482d5c0168c1ea3ebc205442d999ee4592b7c73037b8bb856bcf. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/AEA141703503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b66e6fbd97c474dcb9b9d01663d7ff3a5fe8e5f408a00b100771bac28a3ca3d. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:29:40Z), 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/LBA082241764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67dd7faedb2fb6bf8a1e2698245e3d8026e0c2fb66896ad44b9e8a3c19a4c032. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/LBA082241773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6f12921f3f1a4e1ecaf92d462d8e2974d257d0029cdb2bb87c94874af1fca8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/AEA141801824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f489707c512f1937981706bb629c8bc0792dc4eb8ba18b1b1b51c4c49f5ad5a. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/AEA141801979.