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 0xeda65ffe1fe1a39a06d73e2079f033774a69e0186cdad8ae36be22470985c7e9. 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/57816668-c787-4065-bb52-8f8ad1b955ca.json and https://artists.proofprofile.net/proofs/artist/57816668-c787-4065-bb52-8f8ad1b955ca.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 0xc51a24c6b352a118edeab46d295462e7cee1ee7da61dc34ce2ed8c23e653b1c9. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:27:08Z), 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/QZDA62240900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c26c9f6a9cc6424c62ad2cbddae56631fc474f8eab1fde8e29a5726100cc17. 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/QZDA62240901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d87e8e7a7d5d8bc5bc4bcfd1718b19113c2c61a8fafde7a72f23f53674e8ed7. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:06:19Z), 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/QZNWR2156385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4940d38bd55cb5cb88d79a74f0a7c10f43f808f93bcc7479f7805ff6b49ad64d. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:00:49Z), 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/QZPLS2105962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f3ca75d6afb393c5d8653bd3eae5eff9e61e5d3dbeafe6c64490a1594f60dc. 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/QZDA62240906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954e2a533224540fdae7d57d978f1198db3ec195bc24181416d91fa40bd84333. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:35:31Z), 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/QZDA62240908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fabe925f74e37806f543127c95c6260fbb8256c01f54a1f201c5b96ce1fe2f0. 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/QZDA62240909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead498116b188c9013df9c94eb346e4e72cec1ae335aba378720a35614f3065d. 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/QZFZ72405838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd38bf750b38908df46810f84ddf2741a388d53f34a30ccf7baa0ab3989b07f. 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/PLR862500145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf8abcb81d7f02f4838c7750fee15b3752093db6eba2c2745e9c1ff7c6c9478e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:53:39Z), 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/PLR862500229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2794a43cf9a617961d412b5148f969ad6779d82f2202d582777816d86ae38e11. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/PLR862500235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf8abcb81d7f02f4838c7750fee15b3752093db6eba2c2745e9c1ff7c6c9478e. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/PLR862500229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde39ce7edfa7b0799446dec3c3cb47d7764f00717f33f06c852f89775bda7023. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/PLR862500237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2225f155de3c3e0f1493f62e6844d4b8d69a39b396dcb21a42271a5b4ce782. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/PLR862500238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd469f0e7a9ebab7678244eb69a92eaedd8b8d6b97cf5a337f06f2d6ad12aeb66. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:48:04Z), 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/PLR862500239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a575132b9745c989d39567ab9e0febc4ca56591d871ec2ebd4a3fc0c3e7d0c. 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/PLR862500240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07335c7c108addf57bedaea3b133455934082d66e565a868bc7532df9d087899. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/PLR862500241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9141ec8c59b63f893e9672efe3037c3cf541206fa9434ad6b5ca79aa6ac9a5f6. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:51:41Z), 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/PLR862500242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d06273c09868d43bec058580f4eb92b95dab3dc4b2d317610633e4e2208026. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/PLR862500243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5996b2c56eaaceb5e6e2d4a15c1587fd12efbd033081120114e703aebf29ed2. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:59:53Z), 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/PLR862500244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5369dee51fe96529d25e0f45c816c0a451d13df65344716d7fb48526e5432346. 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/PLR862500245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe19e74fa4f87730585b74135ff2bedc586612b70e3215e4d9146cf1024589ed. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:45:07Z), 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/PLR862500246.