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 0xe7ba4790b5d1f84e165ce4f69627b08fa20d184bc168f18e388300990b150b02. 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/ba3ee037-8f23-4467-ba50-96884bd83c1f.json and https://artists.proofprofile.net/proofs/artist/ba3ee037-8f23-4467-ba50-96884bd83c1f.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 0x1324b1a1c8897ec747fb7fb2a7c74749624e99c0d2d2f1cecfe77415b021a410. 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/PL89B2000349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522dbbeacf17ca359a18e2bbf15e3d7b966e2b6f13171b2f01be02d0765923a8. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:26:54Z), 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/PL89B2000344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e39dd94ae2a42b278021d5f3a8c6c121a66dfda2910bb0571ced2854d679e9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/PLA552301026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b12740a8e30e80b949ce177d4c2a39dc7f143e1e0225f4dc34c31686b15514. 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/PLA552400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7855c63f32e56699a5e19c594ff7e01d9d5807897abcd1e596a391d999c88af2. 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/PLA552400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee98d6fa46e57fd5ed1161903f2473e921459f8f7ec41f604a229be479c4d08f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PLA552400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9ac7af8e771d3864c54f2f335eb8a5a1da18dd745815108a454139daa452d3. 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/PLA552300894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5119581970a75ac1ded773606843341dfb251c27447b6f0e9a66a3456ad9962. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PLA552300520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e245ce3133144425966fd65e1065336a26524d1b0841dcc9d2f26a48453877. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PLA552400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa1060a0db7617f8998d082da19fbdcf99a6e0338552196b335fa39bc1406f2. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/PLA552400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47a605e76ebedf19991168385e345a93c2bcb9b6b82c660074f6dadc5fe4644. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/PLA552400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e39dd94ae2a42b278021d5f3a8c6c121a66dfda2910bb0571ced2854d679e9. 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/PLA552301026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b12740a8e30e80b949ce177d4c2a39dc7f143e1e0225f4dc34c31686b15514. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/PLA552400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e95e996edc41571f113e728ec5cf75411b4fffcf8ac4a4eb68a722824cd0523. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PLA552400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7855c63f32e56699a5e19c594ff7e01d9d5807897abcd1e596a391d999c88af2. 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/PLA552400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c17cc0b4651eb7e47c181ee6be87c6aa58ef872bb7aa525cbcf55672225b807. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/PLA552501023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c80f4fef8bab9e379e2e4a0f99888f7fcc707f45c813851d49386d17ccfd85. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PLC062246889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d641b1e9701f8cd8e72cf1b1552b1025814cf69964352e9bacbef3cf1518d2c. 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/PLR902200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f58d18a1d6178c0da17575dce886ff521a6d261f551d55a35e7119b3b899423. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T02:14:33Z), 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/PLR902200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6c10615e8c6f7d8adce9add7df840ee09a85381e31643019d66559ea75f526. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLC061605008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9447992b1616b9c2cfed3e8718074d4281047d709c09084a8eddadc93eea1b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PLC061605010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21ca4381a4492a667de7280d7245d8849e3b427e823bdf68103e6d689b38797. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLC061605011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6102c185b453d2c878dfa18d0789b533f4ff26e7f7a2d5b7357ee0a91865eab5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLC061504974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f01a942035291056e69a978272111fba4b40a2551fd999b71c9981f2443d74. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/PLC061605024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6f1c4cd127d5f71f8d6e44e72e4f96bffc8ef9795b5554a81b9850a55071a2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLC061605028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb06b149e192c80f5a97d9c276f2f4f5b23539a959357344c25a8548282d32b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLR902400013.