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 0xbbacd93f0f186eceb47d9386533d061f70d7fafdd7b4febd88a05f494d949bf9. 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/d76839f7-9336-49e9-b5b8-c252488519db.json and https://artists.proofprofile.net/proofs/artist/d76839f7-9336-49e9-b5b8-c252488519db.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 0x2eb500ba680cafe8754b68ca3478f712b049d501275bb7d7964428eb02ea8fb1. 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/USHM91767909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6adac90f02cf8c9cc2001d60cc584f3acc86e08a2ca4ca5918b922414425cef. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:49:21Z), 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/USL4Q1933045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac8c5d27115bd61adad571bbbc90354c5bbbb00d738795d6ef329b9f4534116. 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/USL4Q1933047.
Mother's Day Medley: Love Is Spoken Here / Teach Me to Walk in the Light
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5277570d539be95a343e9a38ef6d0578cb2a35c105ab466e21727b455d64dcb. 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/USL4Q1933048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c32c47f89fc370edd61d282d02804c8346dba87315e37edbee2128a569bb9b9. 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/USL4Q1933049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c0b573fd951957c1ce1d70161a7e83952ecd8540ef97a7d8d129d4cfb17978. 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/USL4Q1933050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0c676674e5445d4714f41f3412171b257425c901c36bb4a9cb4f15ad7ce064. 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/USL4Q1933052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8885ab4dce2d86676226c0a58599eae729ebc64918a1618eb586fea6f6250eb9. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USL4Q1933055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa7b7d11bf67b4cf984ec58d466a5cc56eeb0da1da63a7280a67c395645f4ab. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/USHM22293486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f9a21878aa2403b4287ee8e2200a27916894fef4c8da50eaf200aae5b99492. 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/USHM22293493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb53d5cce5a694b4a4420c2c87c3161bc45893f4350ce73ee82972845bf1800. 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/USDY42356898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b1a7c2b2f2980105790117ca73d28c7fb8188d3af18f8159620d8db39a7102. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/USCGH2429001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b525d38e8a3ba3e5f7cc01366f228b1a891134109f9e8d1d2914571e8c84d34. 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/USDY42567527.