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 0xc7e6af2eac7728b195a6c6208eb8e4cf32097139bb24fb49cd397aba5019eeee. 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/cae0f9dc-c7d1-47f4-b2e7-ceb03b096dbd.json and https://artists.proofprofile.net/proofs/artist/cae0f9dc-c7d1-47f4-b2e7-ceb03b096dbd.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 0xca6ab531a1cf12c3a8d68dcf9db9cbc16f54c3b3929389168ac50d9adde7e3ca. 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/EGA252102934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db1183be9b9748c7771039f08cc696372ece24ece001fe981e7eb1d98093692. 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/EGA252201502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db1183be9b9748c7771039f08cc696372ece24ece001fe981e7eb1d98093692. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:38:21Z), 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/EGA252201502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7081423401e79df8cfc59b6e5fc7e773974133da8694f452f8b504bd40bf576d. 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/EGA252300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66af002d56579f95b9d3b1a59e688a37dff7d203936df897748bc0628c43c1c0. 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/EGA252305926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc404242abc42cb14238a51cf6175e0221c9c692199f697b33bbccc4b849032d. 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/EGA252306074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d121681f22d3510a4e638ec243ea5d3e62ee04c9c1498cfc0a4c03d6552a803. 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/EGA252309959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7081423401e79df8cfc59b6e5fc7e773974133da8694f452f8b504bd40bf576d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/EGA252300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf38279764ec00c8bd0be11737413fdc1b01e8493f9ff2f14dea60a4b5c401bf2. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:08:20Z), 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/EGA252302990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66af002d56579f95b9d3b1a59e688a37dff7d203936df897748bc0628c43c1c0. 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/EGA252305926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc404242abc42cb14238a51cf6175e0221c9c692199f697b33bbccc4b849032d. 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/EGA252306074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d121681f22d3510a4e638ec243ea5d3e62ee04c9c1498cfc0a4c03d6552a803. 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/EGA252309959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc530807df32c961c318a612b4439b900e17c8c7059ea58a70a564eff085a2c39. 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/EGA252400923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac35f0a85d5cfe4bec3f9c86efa053dcc9c6e587f7edb9e39b8fec3a8e7e3fc. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/EGA252400922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc530807df32c961c318a612b4439b900e17c8c7059ea58a70a564eff085a2c39. 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/EGA252400923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ab5b88a338f5d8569b33f83905af99cc0dedd449c46dcb4e8192999d5772ff. 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/EGA252402093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc217d6d49abfadaf77ca80fb08829e7d5f4dcd0d489712c0aee52c1c311f6c8d. 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/EGWKS2425972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b91e9b0a29fb268bc9a38d72e97a53a3e2ad33985ecf1e8016b1c91cea6e18b. 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/EGWKS2448817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa872d508cec02b5797a468f528fe1490c9c88bb7edd755812fd76a86f9b472. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/EGWKS2479744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa872d508cec02b5797a468f528fe1490c9c88bb7edd755812fd76a86f9b472. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/EGWKS2479744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6de293c320b572992178f40389855fcbfd149960fbb208fab9eb16876796da2. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/EGWKS2423697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4182e069f8622b96d514ed2228e9ff0291abf20b4eee2b8ef9171ea2bd886b64. 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/EGWKS2411572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7187a935a32bacafb7d3821d552113fec9480e0737556951f0615882dcc8abcd. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:37:34Z), 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/EGWKS2552442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ec66fcf362e3fb3a126e156eb3accd6a3e4c0a767d40aa9f6d5fd33cc57484. 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/EGWKS2561341.