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 0x46c358a5599eaf1871d304468c1f13e51b3104b4198bacdbeeb07ae42be68dc2. 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/2eb5dbf6-4a9e-463f-96da-5fa55beb42f2.json and https://artists.proofprofile.net/proofs/artist/2eb5dbf6-4a9e-463f-96da-5fa55beb42f2.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 0x909e3f48e2fab7392d4ef128fc8391ac2a7f571806b5ab4ac84c3501bc0a9b27. 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/AUHS01204842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f8d670b5b7c50fafb291674c1382819467a0675f5d92c503d9cdb93b9f5589. 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/AUHS01204845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5648f244d63cf7192a2892291cefa32a76fac44bfffc0d5c57d58aa3581dae4c. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:45:44Z), 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/AUHS01204847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846cc18b0e59216689a4b38d7a4965ff4c56b52f132d10e9fc8c94d6ea649209. 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/AUHS01204841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106d5c5a41937a0f7d87d9113018c86ccd0986245d2dfa755b6e1844e8b62a4c. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/AUHS01204852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909e3f48e2fab7392d4ef128fc8391ac2a7f571806b5ab4ac84c3501bc0a9b27. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/AUHS01204842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f8d670b5b7c50fafb291674c1382819467a0675f5d92c503d9cdb93b9f5589. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/AUHS01204845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccbc1d6760a01db8380bbb8e5e997486332a45a0a78df3c4dcb27dc9b028770b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:29:29Z), 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/AUHS01406709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a48582dfe8aab1ebb49166c17b1107db626d7ebc7f34970b2021891097543a. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/AUHS01406712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd724626099cb29d7baa9c06e1c9c70371e2c697060253a2507dbacc6e9a614b5. 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/AUHS01406713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccbc1d6760a01db8380bbb8e5e997486332a45a0a78df3c4dcb27dc9b028770b. 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/AUHS01406709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c1c95c66be95cdae5eecc67e859efbfcaf427a82ffafdb889b8efa3e6988e9. 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/AUHS01406710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd724626099cb29d7baa9c06e1c9c70371e2c697060253a2507dbacc6e9a614b5. 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/AUHS01406713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d8c29a3258494b736790f8ae9bcfaa003c828aa07c256f63ecc46c69095420. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/AUHS01608511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61dcb1cfc8d414d24e29f0fef0a74cde931c45b68ab5015190adf497e96273ee. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T07:58:43Z), 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/AUHS01709001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf486595dc241c24f67857b751747b63e24e58c1d6da97ada5cb6351db609af5c. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/AUHS01709002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8104d7c0c2299eb4679f11813b8ff6e05c5d7cf1c832ac8e471d9f7c02ba61. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/AUHS01709004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0fc350c07782f76ab7adf0f0018d0c4f539ef5acf9410aae43962dfb3467a3. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:05:56Z), 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/AUHS01709003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1de91237f4fb4dc1cea65b453938c5ac352176e5f475ae04e90291d84e7b8a. 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/AUHS01709730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01322efd20da1dc3d75ce4281eecb6c38ddfc2a234db1799a92f63d188dd95ef. 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/AUHS01810568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15db601fe7a353ff6dd1dbb95561f33daf8412249c510da66ba416c34e99e69. 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/AUHS01810569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4712a6eb0002f83f35406c2335e5e128024d5988f16446912a17ab7e092ddcb. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/AUHS01810562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb3f9a6d2879336dd82ac35f2c8141c19dce623f70065ccdd3bb24fab3d8f8b. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/AUHS01810564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15db601fe7a353ff6dd1dbb95561f33daf8412249c510da66ba416c34e99e69. 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/AUHS01810569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647260aeb911bba6b1a52cc46ad1f95aad1248a144e56391a805d6ff845a83e4. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:02:27Z), 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/AUHS02013226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d2c9f078698ea64b1ef44b3da90d61caa0b59501140ae5c001625948906866b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/AUHS02114587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d2c9f078698ea64b1ef44b3da90d61caa0b59501140ae5c001625948906866b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:24:13Z), 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/AUHS02114587.