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 0xf06b80bc5aab6209ae466ab7c476526d912f231cb456b3f61e079ce934448543. 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/d4c9d12b-2daa-470f-afbe-8bb9d2b52ee1.json and https://artists.proofprofile.net/proofs/artist/d4c9d12b-2daa-470f-afbe-8bb9d2b52ee1.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 0x2ec1c73045168c3ec59569ac6cb220956f4781e13dbc089dbced2a88aea0f03c. 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/USDY41963815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c24f3f4325e5cff8f69a63fe2aee701adedd959185086f53752dc4c7c398b6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHN61911760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ba012775b3c555798527829ce1e788c7f555beca58bcf0c244851df54ddae0. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:57:06Z), 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/TCAFR2149474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0510ca228a4dbf85f744be8e4a95d8fb196226356a5b60a0ba8c032edc518146. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAFF2016496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ffc47f04528c092feb86820ec62baff8130bfd1353f626810f0b15bdadfcea1. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/TCAFD2080966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb091dc1a6a9d30ad9c2c3396cc6487083ce5f916f4b73c440da103c5c652f5eb. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T03:01:48Z), 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/TCAEY2045880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4e15d2cbf9936f89f4e52d869412fe15903c5465188ee5ce352c6925a2ddaf. 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/TCAFC2028112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe2ca470d12d01d15aef658a823e26a41cbe4aa7616898e2832fa3d75025b28. 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/TCAFC2071048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1484ba55e05ad04316ca0f4b8453de226e2ada8f22ec7b5fa4255e2d1196763. 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/TCAFC2085708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bdfbc8a1e8bbda4e2d7e3e65f2262bae95f3cab8a1199f11d3d08a6b47e3b90. 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/CH7812105493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e75a92e1683f9297c06da7fef3d4488d91681fdb792fbe85ece6093005f336. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/CH7812105494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28427a64a49e854af3b67b6a9d3dcf16c634404963b3a730a38d35137de5417. 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/USANG2210142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d62000ad3a985cf93d9bd91e8983102226153eb6920217c2f491538192fda0b. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/USANG2293490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28427a64a49e854af3b67b6a9d3dcf16c634404963b3a730a38d35137de5417. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USANG2210142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81193f7439a0c1c2cd906627afdf1f39788bac83ac5d8829b41356994a22754f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAEW2003188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c06bf8c1d902502ed98c690f248e2dac133fd2dde282208bcc61b318ba973bd. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US3DF2151778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59bcdc177f87bcbff9342537113001a35f9fefb8a6b4aaccb59e03bd675c54e0. 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/USANG2448882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3b3b0af52bd59c612d6eddb2ead168a639bef60c3367249c582f72776d47fa. 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/QMANG2222733.