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 0xc582b021d2d8c26156867c8bb21068d324399177f23d67fd887fa185e06020a8. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e7be8193-c81c-4b8b-98ad-46c9e614a3c7.json and https://artists.proofprofile.net/proofs/artist/e7be8193-c81c-4b8b-98ad-46c9e614a3c7.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 0x79e493d756645138647ed251f1fb446c5dc4d99d2ae53777e2019505789abdcd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR6V82341357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc983f16ef807d0999009e6e974739236c9db6f02ae6cd22b73726a6f903ba3bb. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR6V82341358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35800d58f9b986ed2a4b3af2bb571b9d6447d422f78d0e10b83a68f96c38c5c2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR6V82341359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71dc79d76a0c3c9b5952a7b9e0453f877758dfbd9e7c2948dbcc1adcca7eb15. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/FR6V82341363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c4116c3970e3bf891a035efaf88d8ebd91515206508e4c6bc7debcac189d91. 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/FR6V82341364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x166f5896c1b7aea3010cfa4ddd884e9b1edf95c222fa06d3cd0e7c040fb35bcf. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/FR6V82341365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4324f3e1a76969750f62a4698084364913aef87e1f0f45007d219d46abb2214. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR6V82341366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a29cf4eb322b5b20cd1741f75d89840c17f537b345812cb763a2d03860b346. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR6V82341369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4fe435e1774cc4d222daa559e70384dd8b331c0da4730ef6d78b36e3b4ae120. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:52:53Z), 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/FR6V82341360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf92e0cf33b23472a70ca73614a29054094bf6bd7a0520118e417404f3c9ed59. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/FR6V82341361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62a5029271dfe3a525d8a72ba68af1f64ce0a0db849d5bc867007567b90574d. 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/FR6GO1518040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4bcc069d43e92d8d023edf97ede7faf6eb7d95a60b9b4285139138e53cbac4e. 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/FR6GO1518050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f0046e6b87a62bf6b5400d8ca96f6af73010741817d992ab3f1ad663d10797. 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/FR6GO1518060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fe61cc2d4be3b6c9fd775ebd34cca8f5dae2aa96fd99888d91e600c871336c. 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/QM4TX2233124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf7734a0d690a0a25c9ea08d55e618d7c544f248a72dd37fb1c97ae55f3015d. 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/QZGLS2443590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fe61cc2d4be3b6c9fd775ebd34cca8f5dae2aa96fd99888d91e600c871336c. 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/QM4TX2233124.