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 0xd6e658764ddc55a9a523fb28da6c4996a3dc11e4bf904ca542d443afee9bdeac. 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/8b17be86-b0b0-47fa-bc23-f1b0d1394eca.json and https://artists.proofprofile.net/proofs/artist/8b17be86-b0b0-47fa-bc23-f1b0d1394eca.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 0x918cbd565b27b2b8d11a41a7a4d6b17c923012f66ecc9b4d1fa6e05ab165bdd1. 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/QZS642396128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd88517e1a9947a4b0b4ab6e4558e7d86b542cf58f38cbd94649458ed0664e0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GX38U2300173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a9ca1e898720f83c94ad69d5c3899d29935ab6032a9c3961614761832e8fe6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZMHK2340934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31486c56e9e6566c91e3f98a02d99bf84efe3d2e5f5623f83be3ec127bac4bb3. 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/NL8NY2300089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89e1a6f5a60aae380bbd26a9327fb32ee78f12b6b6a6ea03569a587c9697d26. 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/SE6A92339747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43bb68e1551a6fe1deaee749ecb05e17f13533311244f06d0814c19459b2d1f. 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/GBKQU2172909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1fedabdb918ec0bd45c39535d4cf264d459f0be4d46ee17c915b0b45a7a059. 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/NL2QC2101478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb66dd75931cfc3c09a056202278c27709079b4995eefd1e29835a0b42f4d65d. 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/CH7812410737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371fd98c8863a90869193a1210a10fda9619d6e66b6de1aa2570de6fc0685f91. 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/NLT2H2400726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb75c805dbc22eb607a7e265e6c328372899a71cec75f9325425b72aff749d353. 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/NL2QC2101455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3d15e9488240967b3754cc8d994d2eb1766b161c734c985fe1e3f592f13a05. 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/NLT2H2400585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aba50b00b3500017add2bfd5079f829d998bfd973032b433e6af5a85ce70bc5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLT2H2400521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20aa60a968a72f9fbb73016e6ae8f2c072e0909b41be8faa993f903d4baa40d1. 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/CAQOI2404346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672db57d8ab155333a8a429f87aebe8c71fe68bc93139ed6b9ddfa9c328c09c2. 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/CH7812404122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31a764bccd63069fe4f224fda81f7528041903a2a4504589666c17cd7433c2b. 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/SE5BU2468514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479219b76a5b1b5e225b291f47d0389af623eb93e85176c3c758d37edb0536a1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NL2QC2101343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b98d09311f547f975e5ae47a6654bd9c6706281c27fd90d4de14a931da0291b. 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/CH7812404057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0d26c633db1eca287a73ecf1b86d0aa1be91d4b0f976ffc9eed2b62dac6930. 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/NLT2H2400147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d968e7d2172618e4325207a4fb5a4edab6bff9b7556c425d4667e937296923. 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/SE6I32479442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83dd59c63c1f32699912e675f641d96e459ed0eb36d5a83a6dfae6aa7e12030. 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/CH7812400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0fb2af40ca4a14efafc9229811f3b6716f1bfe4b79e7fa04e5ccedf1646da9. 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/CH7812371190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820d9949d59efaab88f15836d754b7618efcd56e7f81e10c9bfb622233bebf82. 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/CH7812363107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2cf4e750e457341a0cb373c716fd59b2bf7cbc29f2dec09b44ad33f828b491. 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/CH7812364575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2771e09b1c905cef605ccb916f7e87c0b49d4678de33277dbaf32ae937cb0b. 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/NL8NY2300125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0857b1eb2de55580260cf8efd74972463ad0e37c3752b59216368cc39caca426. 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/QZS652380304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa632075a28d1eac74097986cd04d680febb534691edb058a5cacc29dcb771779. 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/SE6QE2383247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18850b635e4821beb8e26c3068ed657875ce13b0847158eea3f9b6ba5c685192. 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/CH7812357542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b2abf76e2d735175525cb92eb246947b7f15511d7211280386e187e3f88c57. 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/QZS632345368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0295283b3bb9fd9bc7f4ce4d633d9e216855177b967aab482d8f7b10fa008239. 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/NL8NY2300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1374d7bf45e7c8fae05f0653430ea806808e1f922620d34f6af81cb5127ce4. 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/CH7812355531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695a2a49c152d727535de1732872c5b15ff0c48abc863e913c0cad88cbfa225f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZK6Q2359341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa910d059f8fc6bfda581416dc7b3a9a7a98d38bc0d4fecf71c2768c40e96490e. 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/QZMHM2329192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e0bf562979c32a22a82fd49b60b488fc2ad24d196ed4163f20f7e14f9fdd5b. 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/GX8KD2379449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9d8436865fb3255f0b5c0a524481d39ee8767c96102beb744059bf5ecb2316. 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/QM6N22302601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fbb9a53d1355e69738e47a42e34c6deafd6a95b303555dfb24f06a262b3dbbf. 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/NL2QC2100741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322ac42c7416f44805ca03fb3a25fa464f713716152684f54c83745952a56ce2. 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/NL2QC2100729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fcc28d396c822a59d0e96d7afb5b04c8e28d6f63a6fd5838808391ebf8c2517. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/NL2QC2100696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e63bf2a4ff7f7c5441c31f0438e790b47bd9b9353dd96b95fdc90b94ffc874. 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/SE6XY2215617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74eabde001d791905d5c5a2903dbd0b840927ce2797156d4a248f6ccb6dcd2c1. 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/NL2QC2100782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0025c50db2296d2824c547a7df17506899de2391eed666f73acfc570c0cae59. 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/DKY342200002.