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 0x5049ccf3ae1d00f17c7c8056191f68a0a0dc2bacdf7b782f1430fcf5b47d7bf2. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/95a83e9e-3ac9-44ec-933a-08a2dcc8506e.json and https://artists.proofprofile.net/proofs/artist/95a83e9e-3ac9-44ec-933a-08a2dcc8506e.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 0x18f720f3112162c3e9b444356de6e3cb3cb1647319ad2ed32cdb5195f953c0c5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZTAZ2386379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c69f9d1e61bd8a7a1defb8786542e7d8a3406f4d004d3ceff27437cbad6afb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTAZ2386381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ec5f9ac5562e8dc50cee454bbf84ab02be00fcf747ab709fdce15a149d8d90. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZTAZ2386382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34dac7bfbb2bb2ce4833267ac4a6b74008991b811c727f7162b151a2607cf96. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZTAZ2386383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced5ef434aed40e6ec55f270aa322ba6726fef4aee7a549fcc18a22a7763c641. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZTAZ2386384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb48cc41fdf7b49403651b81daff8d0bbe67797a717eb4da1e5657e47126752. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTAZ2386386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f87997b63e259608ba8585a0dc3aa809972580a3e83386123e677c80a2b8cf7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZTAZ2386391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff9e395d7a191aff46365e579b3372a63403e0657349dcd58d6bd9b959b2171. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHZ62173229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b426b790da9b332c0e031bdec64c19bea08c44d5b4da001812f8f3b85ce735. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHZ62173231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83325d6c888ff5364c92772faa1a7acb0b9a4dc5e5472a60b4ad923df2cae08. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHZ62173233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136c0ae226cd55d7c610e15f98ac8d6092890b8bcef9ce3f7efd5b5c981f2e27. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHZ62173237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2cb757495bf8421cf6b1992216bacd1c5061891d78edf8c6dd6be6578e9295b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHZ62173249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4924b34d741e5ab4c6584179fb5c13643ece9d5641833f49a4dbb8f487aa2903. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNWT2271888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173a9677d0f2379d763b7a0dc95c89db97e7035cefb64490b7629ace527f7504. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZK6N1920056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4540c8c5939875f09ccf342c15c303b9b878cb22d3d086e8cb5c16bf8731edd5. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZK6N1920057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf61e343b2041a24974c40f765e1599d8465c2b41df82296f1dcef5f40884ab. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QZK6N1920060.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0806839dfe078cf9511cddad40ef50a499de66c1e12ca25c5094544651f8a7e6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USHM81961595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3ddfebb32533973aceafb8cc2c4344193da853fdf5c2abf5a1a26ee8a14f66. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USHM81961596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8945988e2f0fcef5046a828492d388569b2e8ca43088b8a2d61a451c208c2323. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USHM81961599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1cb8eaadbc578a2f0b395a7db05f94bf952e4b01afb39bcd901aace2a939dc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USHM81961601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8ea938cc4b82e40d35ba632926a11406dbae2462ca22a3207fdcbf82da00a9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USHM81961603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6aaf254f1e69b4733b6af5cea395936d242cd22a605d8e871d0e26e6d99e241. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USHM81961604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8a4554d1a6dce2eb989cd95afc91d2d529873969b80ac6661843b41224d871. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USHM81961605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0929d2e07bc633c1fde09eca25526cfbdfa00b5d6d71463a8d2b6ffaaa8737a. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/USHM81961594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc241117975c3941dcba20d59ebea66446eedf692f3f7481993df470086c430. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/USHM81961597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8429a10c05cb44b60dabdfd82fd0bd3b8471a2edccb4199bc4c401d4b23ef121. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USHM81961598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13bfb9c7cfe8a8f99995a62e030274b07fdbc1dd158d4bdacb6be102da187cb. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/USHM81961600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91042471243e9c9185835e118b63b7c2310fc306b89f9622526b43de61028e00. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USHM81961602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816ba77c0d1aaed3b4bfecf21c442221efbf6b61408c12aad9e49425a0aa3b80. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/USHM81961606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1e4f894dd5b388c40e912f2952bec1d6610c2f9c36229e0de14f3fdc365b2e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USCGJ2209113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37682a5a59183f30068bf6d01abe669fccfc770fa7e00d52210abee167e4221. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHM92182241.
I Can Give You Nothing (Alternative Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e17f34a97f5617a5eb60d84fcf7770fd28847207732293c0ca2894c1012dcbe. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/USHM92182242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf21ed4847cc4937f6526291370ee24090c9adbb309cdc156c0c21110faea632. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHM92070277.