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 0x0aa8c4156a5682ab2dec8ed1a7305a4888a0934227c10476c4115b70192f4df5. 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/af828a06-bb45-4161-bacb-feb584e17545.json and https://artists.proofprofile.net/proofs/artist/af828a06-bb45-4161-bacb-feb584e17545.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 0x71c0e97aef9a452c900e3000198a8eac137e9d515592d8c5bfa293f6c1a12a50. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/QZK6G2399595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dae8e56c769c958968a8217c1402aff9830b365351134314b6f06b719eefbbb. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:27:40Z), 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/QZMEP2319921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06895559307890a4d5b6c0c24a93d71b6403d2b237fb69ca45da06fd65ec548. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZMER2385354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847956bb4feff829a3e83aed98abe297099b0a0356577a6dbc463843c6b11691. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZWFE2404046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa145918e33b60cb6fb81df0cd37348bb47abdc867fe5ea955b7eb70ad3fb1c13. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:18:56Z), 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/QZWFM2426152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84057a8f15a88449ac5b22c1d3a19f1530e9b857659208e489eaa4011d47faf4. 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/QZWFX2434966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9d19fc855d30ba0bbc2babc4dbb068f077ad4aa8cbdb0c91e9a2958be16d00. 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/QZZ7S2460454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a370164f66c5bdbd8d895dd501c4dc0df79c14372b31d1c6bf2d8e46eaeb02. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZFZ62555681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df450dce22f061c452021fe30f1a5c85259ffe825332e422c0615dfc6bf1122. 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/QZHNC2562181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1277aa23c6c8f2106edc6ffbd923525c36bf119469ea3a24466fcc74f4a6e1ea. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZK6G2564857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf0a7075ff783d5e3f8c2f08d2b2c27086a915e031fd8cc11cee6eb61c90958. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:41:44Z), 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/QZNWX2517104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9082c47e5dc2ee3164123a1591c53546d2d07cb6334c58ce7da8b0aa9e455cc. 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/QZTB32516681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef34a05a409b559c5b92e5fc6360859e7e95047faec99dca16f30fc956f8a9f8. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QT3FA2514724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc251cb4b961b649fae3ef5a98ebdca77c225eeb2670c9098c4015f83583099. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT3FA2561229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6f4126c369853188710f595f1850f6ca063854e0818c7eaf37045a61dc4df0. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:39:07Z), 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/QT3FA2531570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184419aaeaff0eb3aa40f71ad9685e83f448d35a1deaf61a55a35ccd2a6c1eee. 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/QT3FG2560768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be200c161bfee1e22eb9bd75663b86d717f2e541a2dd0f2e33e7268e21a00ac. 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/QT6E82571643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8d0d60521661b3893ae7272201cb8dbed192853ee9a8cc8cd0ebc26c47f88b. 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/QT6E82571657.