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 0xdba0313c2af80fc07d3e6b7abc7f13b43c3e5b1cf0345928bc737ead9f83c23b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/30680efc-3dd1-44ce-b8fe-9a5b24e035a4.json and https://artists.proofprofile.net/proofs/artist/30680efc-3dd1-44ce-b8fe-9a5b24e035a4.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 0x10095be423958ce4522955bcde984db1bfd09472b8c6e3b66c92e1a407080c85. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZDA42000213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3d75a9494cb1962c44338375a7db0c1d59ededc4aa3f6e7d42d05c81d5bc8d. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZDA42000214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b51e078d7be991462f60957548877c5409f92bdf34e4f1d26d4af06c4bea588. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/QZK6Q2165078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b51e078d7be991462f60957548877c5409f92bdf34e4f1d26d4af06c4bea588. 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/QZK6Q2165078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096274e124b84652237308d16731009a2195fbeb4766de9fe6310955dcee4fd8. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/QZTAX2261921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a568b8fbcaf3e9b4fc7333d9135a49cdf8949ec8eb1a19d64770c167fd31ed0. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:35:38Z), 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/QZFYZ2378411.
This Is My Father's World - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba44fcec8ef763e598f931cd14dd8ee634a866736c58cafcadba235ea7c9ff9. 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/QZFYZ2378413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd6e29cc6d3139a9b97b3cdc16f5412f52efeac44a093b1e1db7af7104e55d7. 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/QZFYZ2378415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac99f93d9de79b63298adfd2ba2d83885b6f4b4a30be53c9b1a5eba72c9944cc. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZFYZ2378416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646e3c4164b406f529794f707912a08e77235b93d15234eb136a1e41a68bb19e. 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/QZFYZ2378417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8987effc92d03ad6f041ed5ff4d1cbf3539b2c96bed2626eb46a0143243fe9. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:46:47Z), 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/QZFYZ2378420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7e7c4bb0508b6aeb81cc9b66a0fb134a58c89d984437a0c7c4223b889c6864. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:55:37Z), 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/QZFYZ2378421.
When Words Fall Short 2.0 (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42770bc50b8cf82bb0f3192f84b4785dabc96effbf99211374f7261a7ada4ebe. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/UKW3Z2404456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a90a5415b52e9197aaf9818dab7e207ff7a98f0753a17efccce700d54f5e132. 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/UKW3Z2404457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ddd732f45204e656746281a676e4d746e7cb3405c764857055c94dbce5d62d7. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/UKW3Z2404458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c27210ff23d6377c998e926447284ce0a1b014c9b38e0c337af57f445b04b2. 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/UKW3Z2201720.