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 0x85adc9bf738b12786f642af2b2a246ca1ec7598df8c4ee77bc1d25eba262f9bd. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/10ffc678-3009-4bfb-8a4e-732e5b2e5585.json and https://artists.proofprofile.net/proofs/artist/10ffc678-3009-4bfb-8a4e-732e5b2e5585.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 0x7f49e958a18ea959f4d3049170d271c4c77830a9c2708666bb81598c666a50a4. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/TWBT51800252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322aea0ad3c7b45465e0723f718ce02504f0dd9ebe5077edb42cae44ec99bb24. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TWBT51800253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a3fd6e52ef9ca84f302676e9d7bc0c24a49c8406f86b14da8ff01774ad1b9f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:17:21Z), 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/TWBT51800250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416471d5d1cee91276cffc00562ffc1b6bf35dc41cc09dd83b76fed3fe5a8b24. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/TWBT51800251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f49e958a18ea959f4d3049170d271c4c77830a9c2708666bb81598c666a50a4. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/TWBT51800252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322aea0ad3c7b45465e0723f718ce02504f0dd9ebe5077edb42cae44ec99bb24. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TWBT51800253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09806f905cdf04d174066a5c178eef5e3f75b2032f5577184249b71ee825008. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TWAE32201345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09806f905cdf04d174066a5c178eef5e3f75b2032f5577184249b71ee825008. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/TWAE32201345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7344d04f2e65770ad742b809bba57d66590360ea166a5e6a7cf8f4ead471690. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TWAE32500651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224d6235749764db1b56fb767100b26e12b5edca0d6322472f21738fef6ef57d. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/TWAE32500666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103fb76b5034b5bcd02d8ac37f6aa05c6d9c7f341048710956aad54d9acb243a. 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/TWAE32500649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d19ccdc9ff7f46bd65efd45796737781753494288282cc5ff763f554a68374. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TWAE32500650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f5444ec85c16a8a4551a772450ac9f6fffb3fc2ea177b32e8e23209fe7f301. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:22:30Z), 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/TWAE32500652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9edcfadb169627c7c3e4cbaa1c5b02c67a54cb2410d524c078262784a7886bfe. Chain 2 (Bitcoin): anchored in block 957695 (2026-07-12T11:16:12Z), 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/TWAE32500654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4fccdce19db4a8b3a1a2a81cf5df7ee13bfbf3dc3f2997407a5b5bbe3b8d83c. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:50:56Z), 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/TWAE32500655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79800c2c481fed095b3ce748c576e24b61f25a53ce5b3c77f394acd95471563. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TWAE32500656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47632b645a03ae50ce8d9196c31e5573fc4fa8f702bf80cef107c0dea08fe15b. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/TWAE32500661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224d6235749764db1b56fb767100b26e12b5edca0d6322472f21738fef6ef57d. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TWAE32500666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a27943d28207f1ad11a23c4898f4e979d6b165ccfedbbe58502dcfafacd69d. 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/TWAE32500667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25ea04ab7afe60b34340280d026a835f3520333803330fb5cbe199f5142db40. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TWU712514095.