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 0x0d8bc34ea04e94d23d3b009ad68c79d882aa753fc492831b1b4918ef02b7c608. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/74780361-17f4-4044-a7aa-14c01c35d376.json and https://artists.proofprofile.net/proofs/artist/74780361-17f4-4044-a7aa-14c01c35d376.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 0x35b4cec86db96cb97060fd168adf771b70ec14f2b537fb0172d7939a821b6b07. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FIFMF8100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4e0094e9fb240c95bce5afa4253c855ad380580345359ee0599d78ff8b9a60. 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/FIWMA0800091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ebcb2b61b72f1ada55db4a49543a1fbe7f04c4ba9f85f9788d99261d5c5c13f. 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/FIWMA0800087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cfb0e03813a6f2f6668c06040e76b1230314243470bee36d243668fe9154440. 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/FIFMF1220809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d724462a9276fd2974ac4c61eb68c62b0cb8d364d2b190d07b7841837f592c. 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/FIWMA0500823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd5ff0a3aedfcab835c3109d8958b08a7a0afd908dc65552716baaf4d6e22ad. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FIFMF8300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1566ba9bed36f3d9e11db198e923e47022361b874347c78df063d127c44e58. 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/FIFMF1220870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f930e95629926cf7ee425abdf9e47c0c5eb5a69687f860a5824cd06066bdd74. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:20:46Z), 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/FIWMA0500748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e55e8c1c630cdcdd888988e4b564cf0623f80ee8d65ac82b18c40670a179122. 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/FIFMF1220879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdec64601d8b4f5719852978216d4b88a9cfb039f3a4a699633f1b4e863eac2f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FIFMF1220935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf8ae88b0171e97cf2693949ab5594741e9a78467be75562c145e5d2d377d724. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FIFMF1220024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee3da6b3fe8be2753419989bef0eae91a45ffac0b02773d8ec48784eaf275d6. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/FIFMF8900026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9369911985d7e840161649d4a1b89956e9750c184f016988ed27225e03063112. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/FIFMF1221026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97a1da2d1f0815510e7b6f4358492fec29ff20c9485819f448cc826ddad86f9. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FIFMF1221195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581ebec745535f39390130357dffbd1d1cf222316db00ae7bad365b587167d4f. 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/FIFMF1100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2116a3f540f142451cf4fd4459cd78160e5422eb63d5d6547acf48a9ba1eca2. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FIFMF9400284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee3da6b3fe8be2753419989bef0eae91a45ffac0b02773d8ec48784eaf275d6. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:55:31Z), 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/FIFMF8900026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f14842f1a463e6a040c2cb60ed7e3aee6ab7da87fbea5c3b5ecc35a680756e. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/FIFMF9300310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e734d9a02c9b93545292a42203e927b7940271fe7b56c6c4218f41ee5d6bfc6. 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/FIPT60200087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00bf07923e59e50abdb7ad6e65c5fda1cb4347cb1bc8abfc27dc79607254ea39. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:08:58Z), 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/FIPT60200091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac70e0830cd260622e2979de7ec44ad4bc3625f61f0bfa6029216ad997c89e7. 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/FIPT60200092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd66503ea214d4a835dae95fae789369fc14cacb8ad7d382a37018b0835d0bd. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/FIPT60200093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26409e85d043e97fd5c24d5ae7c2290b241342d53d28329909b2422eb5aecbf. 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/FIPT60200094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20656aa000e2a974baeaf2a1f94f6e371ffed5ff4379e685230c51dcc0dd946b. 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/FIPT60200095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445f1a8a190925929162ce1ac4fdd0e8e7eab2394e6a28bf2b229aa74b3df42c. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/FIPT60200098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98cef24a986f316efc4d80d0f416c936142e894038a535ff954d652ba2fa38a. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FIPT60200099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623066cf81ce0a39c514847b06967af3785859324323ffe9ce80d604ab76941b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/FIPT60200100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908622ae6b10b595dc1e3af6870a9515238ecc0e49372f218d79751baddbe906. 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/FIPT60200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed572f41d0e022f509e303db04af9b40039b8b025e8bafff6bc22f24cb804f9. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FIFMF8200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b4cec86db96cb97060fd168adf771b70ec14f2b537fb0172d7939a821b6b07. 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/FIFMF8100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb324ed038511b56643b2d7f2446b5b05e81a85c2bae6c7bcaf7aab476dabc72. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:24:47Z), 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/FIFMF8200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba500afc76c7a5d708765d6ecf2f883f2e1a8875fec0b7d1a2ffe5c11b90773. 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/FIWMA0800088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bcfbf33952727fdc1ae527c07ff2b6a5790b5fd4e0e03c249856d20fb6910ab. 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/FIWMA0500747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894fe6ab9a9c1231b9941d8ad33b93e4fee8a05a1b215114d32d1642e6179d31. 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/FIFMF8400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d724462a9276fd2974ac4c61eb68c62b0cb8d364d2b190d07b7841837f592c. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:47:04Z), 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/FIWMA0500823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4cbefde6a83a953d9ab88839ad54b54cc76a747a22d8035e96f117e6ed95c3c. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:50:03Z), 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/FIMGM0800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba500afc76c7a5d708765d6ecf2f883f2e1a8875fec0b7d1a2ffe5c11b90773. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FIWMA0800088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e4550465b2a933871948be07a34ee380b543d8e75b6e8722dc38327c5544a6. 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/FIMJP2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561bed13d4aa64adf85d9e7ba31077f73559591929faa3596e33b4749bdea0a2. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FIMJP2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4451ba1f819d1ad93c3a5a346f605345e4a6d35658c5e2f8c3da34392cff193d. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:55:35Z), 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/FIMJP2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41d47de61699d61e3adcf7acefc9d5e2ba316e933a2cdbd60753c3854c48e3b. 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/FIFMF9400031.