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 0x699b6c5b6b7d717e24ac6777990ae9b1bf1692ebf53aa13bbd2ca750f83ce1a0. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/71e77b2c-011f-49f0-82f5-4f2bdb986c1c.json and https://artists.proofprofile.net/proofs/artist/71e77b2c-011f-49f0-82f5-4f2bdb986c1c.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 0xbdd4fc8617998c0ce950a6aeeb92be8c47d79a82262d0e67a502da0334f981df. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/EGA252415476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd81e216d589c21db4f106cb42682751a1c70daa61f200fc5f37328a5f216bd. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/EGA252415481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b634f4bdad933398231c056af7e7fa064707ad53ed8ab2e396ec6d5e907bd8c. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/EGA252415473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9c15e48fe526eec9648f9035feef24c60efa054012f758ca2f91703f73700d. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/EGA252415486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e003e7c5d8f52a46b1d1da03915e93504d25bc3e4fb10a7b9fad87261e814d. 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/EGA252415472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596281f62bd64191577f1793ddf75a714e99013a23f04d974f21b1deaf35bb05. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/EGA252415469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb807f9749a41a68006759eb4f3625e7debd4552526a5052e99e8cdba781dc76e. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/EGA252415465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4124d1bfd17a333a38c2c6dce4866749c5ddab5692ebad8fc2ac124d0981a369. 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/EGA252415479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56dd9541c8e9860dea0e90b8e61bef7699a6f97d8d96787a23f5389e1b66efb8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/EGA252415513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38280efbe0578a5620297fa1d0b07806a6f08a1f41019d403cc842f33b75b34. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/EGA252415510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40623281e2fdd9a4ae78df558500e19f5c951b7b1e3b3d2b2d7487964ba96ac5. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:29:00Z), 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/EGA252415517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ef39a42925fe8a68f89f0857911e279a6530cec871cb1e73e3fe12a8068d67. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/EGA252415509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91b41fc9141789cd76ddfdbee65fea4eda53b8d36fffa4bdeaaaa485317ab44. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/EGA252415497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92fea0c7c5630b3745395dab0a632aae6d37bf65af5de7bc400be408d57d480. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/EGA252415519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96cf04b07c099ac2d60c372c87b14a8b69c460610322d8a2241c9049e8169df4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/EGA252415518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc789614789afbbdbd8074e8f7ba93146fef237a1b2aad6b2f4deaeae11ad08a9. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:40:53Z), 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/EGA252415507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361f688c54ed6d482c0683392cda7c8898c6824e701d21cc8d0ddfca6b792dac. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:26:44Z), 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/EGA252415508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae0ba33faee2d3b348cf224a7aa930a16ac4cd66ee60a53c6c633aa2cfe3e9d. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/EGA252415503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8fbf740ebeddb7b182d06d8382581cb45e195d9f3a822e7b417e256db7c816a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/EGA252415501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84306eec2ed704bb324926fb96eb5bbdbdd836ac868dd7b906f360da7ba11765. 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/EGA252415498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff6071f1036ae6fe859d4913bdd1105c2ac246ed45666dad20f413b8fdf865a. 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/EGA252415502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c1e84e66fbca4500fc1ea8a4ead56b1aaf8855539180377264c6d85cf242a0. 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/EGA252415520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f3dcab4a720b213d4b87045847de73c03f139f19287bdcec108e23044823f4. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/EGA252509205.