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 0x0c486a91a713de932e1c38c1a32ab21a271ec5d95455290bdac59480c8de1ec8. 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/a24a91eb-5584-4fb3-8ffe-512230c9f4fe.json and https://artists.proofprofile.net/proofs/artist/a24a91eb-5584-4fb3-8ffe-512230c9f4fe.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 0x62b292c24aa1fb9f788ed93fae7017f702fcd9c3a1d831e5e150975d6fa724ad. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:02:53Z), 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/TCAHM2325827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8094125186418cbb03de56d80e3c6f73e3b48424a39292103f605983f349637a. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:53:52Z), 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/TCAHM2325838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e0b7d0d247cfce546c3d42ebc55446c3f73afa04d098652080bbbe0566947c. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCAHM2325842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9afddb6123aa9be78560f6d1a4d71f7eff1d176d0c3cdb2fcb15ff1445f7aab3. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:58:33Z), 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/TCAHM2325844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0dbf936aefdafc0c2788a73d8a8b45dbc6fb6c883bd8cef9688d9b26fb7f8b8. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/TCAHM2325848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd552b1556ca82413b18415658c32689abd0cd6fd338eb2d0d95e529f4c4f2d. 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/TCAHM2325851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba28b66f76ef97089691afe34ab1d33421f27bdcb9b25859d21fa15413b0de5. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:32:18Z), 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/TCAHM2325854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f92a20202617f0445a6a80cadd3e7c4ed199707703e328c816093b1af4dc82b. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/TCAHM2325863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa58dfa7c78d06c654ce69e1009dc097b982b1d3dc6d63c4f4dbb2bf8c97907. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAHM2325870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22808c0a2c6c96655436bbff0895509b1cc2f347fcc6d193b6b17f5c381c25b3. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAHM2325885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc616898ec76712ec88e123d71b4301e1a7a079a966c82246b39cebee8acf0043. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCAHM2325887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f147b9dcf66c82e37518b0b68d1b3f6b90d567ef984362b45a56d9aa8ee5b55. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAHM2325898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4c6ce276540a184060bef52f03c3ba5d770092a7874c8b0295b88ca2aed10e. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/TCAHM2325901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd93a098547789089396ff366e6f5fd5d71fd54ca0427febc03fcfb54c581f361. 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/TCAHM2325903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487148299a7646d25bda16dd538bfdb1a894f80983468bb673fa30e91e6a7b96. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/TCAHM2303083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd30747dced6161165396e9b09cc36cc0d4f618b53d955e67589b49ae25dbba9. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:46:51Z), 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/TCAHM2303090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc2ce242f1e2507d0001d438cbf547d38672b39967be908f9b6eb5cdb17000f. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-17T04:53:27Z), 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/TCAHM2303121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf5883fe84b030ef159dc43396375449937ffe053fdf75dfd11c97efd0d6eb0. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/TCAHM2303126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2fc18cef3ad4ce319527c06a44b49c400a3bf51599e3e6b3aba90a4017c7c8. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:55:24Z), 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/TCAHM2303127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9573921d60fdad41b590b87b6a0f876f5b92ac5de795a55543715431e2c1d485. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCAHM2303130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e384e92906718e546d5ca0d468f10bd7f31a2069410f5a38e27948141c403c6. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAHM2303135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbbc841465b9e264003d8b0428fbd55c87f78ef7845beda96311300371ff8f89. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/TCAHM2303152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d183469f630f5da576db538558130cc7e64f1686e2416a3c81c22bf20a4c8e0. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/TCAHM2303157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5f56ed368b3eca1e71a970ba15bc994280f7d3d1bbe2429921132e2aec152a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:55:16Z), 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/TCAHM2303167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d78b0ae46ce3e60675159e29f93cdb682ffa8c6f71b2989ee9fd94878a73ffe. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAHM2303179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875a92ce168ecc2faa0bda8f4daf3da9a7dd4d2f869e5d8ad7e319922b0daf9b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAHM2303185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d4bd34a1b2e34ad9ede09b70d6b953f4c18dfaeb9c6c57b95a782b9451cd73. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/TCAHM2303194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc5e4a9d74a57afb0c486f9a9004966d5a160ca304f06d7e1733047beb7677e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAHM2303205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69180b6a2986b7213fb3c529533489ee45cd8e91f40f24839b51bca6c4ae570a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAHM2303211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d00d5671355475cdd6a217ef80500cabf7fc81685a0843c1b313ff38fed7c4. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/TCAHM2303217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16b2b9f7154c7be1a4008d812c9b54d21410bfd8f36b8e259a3ff45837ed071. 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/TCAHM2303223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed57ea714858598360270914bafc3f4647169318cc9f05c12c77e53d7a16f19. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCAHM2303225.