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 0x39eae3262a9ae74f6949e95eae85aedb572a3a26d49fff201d7f19fce4868895. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ab1c5cb0-661d-4ea6-9198-570200707d6b.json and https://artists.proofprofile.net/proofs/artist/ab1c5cb0-661d-4ea6-9198-570200707d6b.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 0x7af0ff8e5cfec90c291512264defa689438de190f4c1a1fb7864d3fbbc3fb190. 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/QT2VB2429769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ef13ce4082990d0a1727e3f6771e7e8691a2de4d8d3c30dd9738c8fb0cead2. 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/QZLBC2310130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bdfba849f485631bf618ddd393b8b8a18178c390e0f561a57c15859db1b0eeb. 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/QT2VB2424872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0290e5489a7700177b4ac2a4a5891911c9b352637b9c72c2aaab3de1e75cfdf2. 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/QT2VB2420882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f328d242fefd78d1ccc7b7debe67ffaa726f77793d051b706960c631aa28c61. 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/QT2VB2429770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d8454a97cf631cc56b2fd6a4eb2ee5eb08b52db1cc59664921d1d5d4b2fe0a. 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/QT2VB2467937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde128d7cf353d067d1bb0e5fb7c7d1ebf70a85c8e1de6b1fd4a28bd18d6002cb. 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/TLVEM2403649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ddd004e227e18b0927f55602e51dd16ba503659c0f768e9fa6981360522e526. 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/QT2VB2467941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf12193afbc76e2731d2b5b833a7e619dbe124c990d4c22c7d41f8d8557b09e7. 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/QZVEM2379856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b37ad07eb1e5ae2c931cbfc34a64ccfa60896a32c8ab22c91ec758075c464b. 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/QZAKB2301999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde128d7cf353d067d1bb0e5fb7c7d1ebf70a85c8e1de6b1fd4a28bd18d6002cb. 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/TLVEM2403649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35550eb81df373ec055fb42d7c2053a025a70724f2b6c09c18e90e237b66dc2b. 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/QZLBC2405726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f7d73bdf77bae1843de4c2346b7378d250d0ac82be9ae0a48e09c71471276d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QM2PV1855859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c44a3825200e6c0c1d57098645d242049cb87d83849983d863de0bb46bdaaa0. 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/QM2PV1855860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbecf01a2614824130320122ee18f41a7dc92347693cdcd4635708344ef1184e. 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/QZDA81890123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a71486cb194552ad06da250c0bf76ea151e518c0c47ed1b5dd7e696f9ff92b. 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/QM2PV1855861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27bac3934b4dad6bef142d11d290cb8595f6d697832cd02a88006229c08b03d. 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/QM2PV1855862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4358f0dcca78365ce9c110d49dc5ae00ea94e810b325c826367e78c7b7f8b38. 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/QM2PV1855863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff15b176ee172e82d4df4f4198ca5c27604f54579d138bc6ea8758e7cf48821. 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/QM2PV1855864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b5522086a7b799f078f6968ef5c63cf5981b3f37f249e9fcaf231c5180332a. 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/QM2PV1855865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6946e823962a14998083c6a360061c517c565f10b13780aa3d789070084c07cc. 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/QMPKX1898978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14fd6712e20a40b386546a27ec1b4a9fe23959831742d58c048b0c5e8ca3384c. 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/QM2PV1855866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb2f17ccc9790057ad25430fec10dd8025709cb921e8c2761af6b4415c9cf0c. 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/QM2PV1855867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3fbc9def9bb53cc8984ea819a97ef5a28082d51d16cda4f43921f068e2d38fe. 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/QM2PV1855868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d5e11fa4898a034704c17052377e5a2781a3ac94a9a4e3afd7af5c00604081. 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/QM2PV1855869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42e8185fa392b9d5c86edf405c5e10fccf2c90e1685f210bf904cad0995a8d8. 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/QM2PV1855870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd14a5a336bd2753b8425c5b1b1141e3e823dd36053103a969f2b873a92762db. 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/QM2PV1855871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a6a77d62727bcbd2237b6cea75392f7dad7e722c4a5ec264ea19a503a7880b. 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/QM2PV1855872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f82be08f77fbc49fbd27f1a01bc4a8db484755202897e52b949065d3b353b6. 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/QM2PV1855873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449dd921cc885580b58d147c0b6291999f55fcc1d7ba5efbd804a435a61a5ff4. 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/QM2PV1855874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0f8de45f774bc96e25cc71106d6df30d71c6536393dc5075746955faafbd85. 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/QZTBE2383535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aabebcc3d7841f2ae5dac59af7e661d8c96affb64c25a8a4a364606aee12b8c. 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/QZTBE2383541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59b28bfabccb20798d5797da8ff7d0018d50f19fe379d808fcb528084ac3170. 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/QZTBE2383544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947d509ea1b0ed55c202d8071486584883497dc18432c446ee4bb2200dcff206. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QT2VB2450052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f53926edfd3ee7638ead5b108e9cb08aa712c779cefc335dafe4a4e74aca551. 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/QZMEV2136989.