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 0xf5e51e31a7502e8345c7104f6ac0e182e3b72c836ae1aec70b0205d35326b886. 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/cc213965-c870-419c-a5fe-a3b62d6de050.json and https://artists.proofprofile.net/proofs/artist/cc213965-c870-419c-a5fe-a3b62d6de050.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 0x40f5ec6b05e471d6c9244d11737f63477037efe4b4fd898c94c48cf1d90ef0d5. 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/TCACI1569818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091378e32103dab536d5db13567e50a8f173d24c91990921a8f5d33782e2e1ab. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:55:14Z), 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/TCACI1569827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85bfdfb8e84b49eac2ae336ed6679cae9da42a1b17514e449f7e849d70ca765. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCACP1670684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1115625f238a94904d868af1907b3811cec12261038d06adf714cb2d22cec0bd. 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/TCACP1670686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe80ef37b478e0c3bc6f39dafa93584a7a2b8ea3f222e5cc30ed9eb59b90589. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:41:06Z), 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/TCACP1670689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09b589ae7f6d7444bd447fc6e98dcba66920f6511db2622e6d8c84634da8082. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCACP1670695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20835733e8a326fb3f8252bb7ffd738e523cf778c830276220787f0bb423c1f3. 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/TCACP1670698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85bfdfb8e84b49eac2ae336ed6679cae9da42a1b17514e449f7e849d70ca765. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:51:03Z), 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/TCACP1670684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc551b352dfffebf4f1165473062f1857f1babdb6ae9c0394eece28503c93942. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:51:37Z), 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/TCACZ1745133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc551b352dfffebf4f1165473062f1857f1babdb6ae9c0394eece28503c93942. 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/TCACZ1745133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75849424c9a76ec2a2d17fee8a3853edc2865cc39a927fb220328c9e487fb6bf. 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/TCADM1887919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e158eb6235a63798ae831d8a5c80bc126a942c76de81609b24d6fb9c1cad4c2. 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/TCADU1855715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c846a1fc91ca7ec2e121514b83828d39753177b5bbb6efa5e45cc6c63a8d16. 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/TCAEL1971993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c56ce5887fecfeebc8d8dde77d12764899ba45407b353254f8185bae663759a. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/TCAEL1978763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4122eef35f3af4cc61e961e5e6b55ac6e6f7ff404c0f7bcc042441a2ccc50d5c. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:23:27Z), 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/TCAEL1978772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ddbda9b015147850d4e7e741efc3012868952d511f0259ff072f20238a5427. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:10:28Z), 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/TCAEL1978791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc9ac3b4aef16c9135240535f592076ad3f3df0f41fa0e5dfe9dd6af575096d. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCAEL1978801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b883010a544b983a7295d3ebcf471051bac8495087ae0eac7685da67fe8817. 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/TCAFD2011601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf870e39675adeb1c02894d9125863b636b853bf79916bcaf631b931bcaf2c09. 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/TCAFN2125052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5527e4647d6fa023f980c421867bdee24d68d04c7c2ba0ba2f72d58b0b4d7d. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:41:37Z), 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/ARHXW2500215.