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 0x3aa59b0824130008098d022c25346d4cdf59634386b59f2b3216c05205eddf4a. 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/f71795c8-d409-4ed5-9276-2495f9767160.json and https://artists.proofprofile.net/proofs/artist/f71795c8-d409-4ed5-9276-2495f9767160.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 0x288d6afffc1e6f5c5dc0c0b398490adce6b3a65878f78e1a03ad7052df2389c4. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/SEYOK1814393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e8ff3958c3412332f579544ccca7b18168bd3708d4620b26c7318c29c6b99b. 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/SEYOK1814394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0935b84b716224e9abef90099b1027218e2e385cdeed76f395ebc1d956986727. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:33:33Z), 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/SEYOK1814396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88132209d56462093ee6e7897ef188fa5c5dac7bfba6b6109f74cceebfe4aee8. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:47:38Z), 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/SEYOK1814397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5b198b1b22065704e4e489e9688766a7ad4e80a5741ea473bd073cc07b905f. 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/SEYOK1753960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd606ce8b3fb6b06b7de4f37ed16468c5246bf44540923e4a74f2916c7e6025. 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/SEYOK1753962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff2bc1265b3d1b77e2369e453b16426aaa53fc59b2507b681d22b3406ba1bd3. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/SEYOK1753963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956f784ec2aa12bcd6fe54be8a9ac1e64c1a76d5988fc4f34beec32b79dc67a9. 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/SEYOK1753965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97edf796d7bdee91497ac5ed03262c7fc7b3290decc9a59318cfbb20cdd41ed. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/SEYOK1753966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9990f76ebcdbcebdc00b8777d542994380bc1a078eca20f5057050c7d2a259f. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T06:47:15Z), 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/SEYOK1753967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52651c2c6656bc3940c95e6eb6f1c54e3128aa5a7081a6beaba233616512e4e9. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/SEYOK1780025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6e292cd5422570b9d71002b47afa56ff74c0f543d74792febee48df43508b1. 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/QZK6Q1975486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33bf08dd2d17c318e8cb2f3b4eaaa5ee152a29fdc1bff54483cc55188f9044d. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/QZFYW2096855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198f500b649fe85a31928d7053b180484145714c35e43aaa124f1ba8eb1b166a. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:20:35Z), 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/QZFYW2096858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea57de374d50bc403e8e9b97882311980b6ae93e8e8850fdd04b4783bd50ce2. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZFYW2096860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f63c1275077e530ae5c24ad10bd9f96773c3b508dc219b87bfa74ce7c188940. 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/QZFYW2096861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5743103e873bb4232a174c874b34d0e9d6e3de5641d2cb0e389cd313121e58. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZFYW2096862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa040e9683e02b041a14506aec0b16787f6bd2b9018c66ae472d932ff3819bce. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:33:39Z), 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/QM6N22116504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dae2c4cd17ecb890d066b4d85648059a6181225ff1478f3d30f5b7eb3cc8a4e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QMFME2163408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1e9acca452c07cf3bff6554de790b1080bbe3656251f9b9ed0fbf5a8292284. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QMDA62161510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9562e908ad266e778fbbad6218a2d310d4091dacb2aa904d8bcdd01172e7ea6f. 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/QM4TW2389572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef3f452e77e45416fb81124a2928fdda95a30e4097f080f1fc01f818b682128. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:46:31Z), 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/QM4TW2389576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b95d06c755fe5f00f396d7e35ddebabcb91c03ae8881df7d51a89851abe7c7. 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/QM6MZ2105317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881c56a1cb2212646a00233d1197ddc52cdc0dfe3eca58b6604090a1077a92c3. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QM4TW2389584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d63e1c6afafd0c935e47e1462b7450a1ae63ec002218d5407ca91f3aa1a803. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QM4TW2389586.