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 0xec8fef6aa9b1cb5900b5bcccca661780b7dceb81cf3b3d2e8b75d23e13e698e6. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/68070275-ec98-40a0-add4-725b919c8570.json and https://artists.proofprofile.net/proofs/artist/68070275-ec98-40a0-add4-725b919c8570.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 0x333f3ec4419c788f30f58a3a2bcd21d9417a8e70ec04c8639672e8b09d921487. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZTB22269213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33df70497d708c4a5f6f0a21cc918de7ef8491d48ee8c5071462198869768f1c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTB22269216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde45f35c4208fe1a2cf9602582bfafaea881f984463fd673d7b226fc8161a14c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTB22269217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193b08bf0856752eb1b94f41fe087a33c6fc9e9d9ec77ed2675f4cadf241d195. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTB22269223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9846502f70913fce1c1b9e1c8c207ee75926c841322e1395db8b2d1d849fe5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZFYZ2382308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84357164ea988b86d8fdd8a6d626e2920ee0031f16158c110e324dd16d1a0819. 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/QZFYZ2382314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b257d6dbe4759e4878e43c25d744e1ce6faff6fe71af93bcaf5d5d5e7869d0d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZES52395179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef4f38c0a16d4e521e8743c7b3dd6baf7b5c3e9eef97729b484cedf76c41e5b. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/QZDA82383492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfcc2ce8608c02f0f253a0c11fee50e2c837694d03078ddc63f6592dca8cafb2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZDA82383497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75055e6f2055e261829ea35cf8b5d734dba13c344fe3a2ed71b50dbee2550608. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZDA82383493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a15fda567c3e78add233de0288f3081ca8d7ff863d2197e69f98eca131132e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZES52395193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44678e88a2d7ac729f68d11d48e21907746a56e849c7c2177a01cfe0cbf89569. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZDA82383500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91fe73366a97481eeff5bb9a882d2249ecfacb8475e351c620e78db987ca7f54. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZWFM2309442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c64a43ed55bbdfc896a7aaf66a8509d8f6fc71751eaef2b3d3bde886c88c9b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZWFP2303667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe947a55b50e3597e2bc366010f8a0e8fd7e804b5c5ea74f240320fa05a619b14. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZWFP2303669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78aa4b90eadb7bc7816aeb83ad84f7cc60f4023b796479bdb307182bed6639e1. 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/QZWFP2303671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28773fd5dd991f8c29bf07f41d4cc2ff65d3e273a34ad9f7dd7b4d508730806c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZWFP2303674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070e87a581f8406ffccc07ae8ff5cc7b4579d406f02bd31aca1986549deda1d5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZDA52407111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682773f2f6419bd11204c108d2145fe39015a061e9971ae33e6b062b0ef71848. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZHN92464654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e56b9a308d37b5983a4f401a1a6fda4eabed95c7d2acea91fb812950dbd7fa. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/QZHN92464655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9285b9c8785147396f320e11add0e37ece700aff8678e1b9da959205f129a264. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QZHN92464656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b88fc8fd68273bbeb4df188430df37d1d1b832ee78eab8691e4a201e0f5d29. 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/QZHN92464657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8480bb3aec249b8c65ba416f1349858248d3504ad67b45914f42f2a09b69b5. 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/QZHNB2464662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0402553a999bd12e816bd08926bb73897d4aaab5ca64c0f1b8aa73ca81e536e9. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZHN92464659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe92621f7ade363d3a1b3aba17695256b6ebf0292a38cfae0756ce64e0155eda. 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/QZHN92464660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d744e47924cf2ac2db18c6b1fdb521bbc08be73cdb604ba4f1b9d9f8c2ed164. 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/QZHN92464661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ed027ae72736302109d5a8cdf8d43cfb97d8fc13f68d12721bf8488cf0c727. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZHN92464662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1836532534f5fa7c263a28cd999750ff2e4fc6daba02e922973538ba676e16e. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:01:28Z), 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/QZHN52484830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59944fddecfb63eb0abff9378a8badc0e377638c7a1dcbac08ff2b1150578c4. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/QZHN92464664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ca16e362950cb8692580bba3c8ddae1e30d3c0f1ef4abdb5b2eb0ad105f30d. 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/QZHN92464667.