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 0x82ab174627b51057ee7263b473412e4082201305698ffe8e6449b2c0c4a02a6f. 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/ee3f2b44-b3a8-4c71-a549-9bca5816bb38.json and https://artists.proofprofile.net/proofs/artist/ee3f2b44-b3a8-4c71-a549-9bca5816bb38.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
S.E.U.S.S. (So Everyone Understands Sick Shit)
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 0xbcb5b5af7a13e253465346f2eae0ab4068f683ac8901ffac707fba41b7cfca34. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:00:08Z), 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/QZHN71916521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139f49706e35f7d5cc0cfe20909d6e69397aff426b725c50b9f12e0e123028ba. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:04:41Z), 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/QZFZ42239556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x807a1abfbe4228173a3fecec4db0bd3ded6b6b67e18b02cc319cb85172eae6ad. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/QZRP52292256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0201617f36a35fabb7c7befa290c4f138b3ca160792d39361ee73a77bf194d. 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/QZRP52292259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f8c513ab0f89a61c5296c3e1c6ab27ba23830c0eb132babc2bd1fd8e4a24a9. 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/QZRP52292258.
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 0x149aea1c5e700a4c5dc4aacedca94a7d1798caf7a946d94e3dc6531d474aaa94. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZRP52292260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186cedf0176be338f391d6fc215e7a2d2d8a6a17746bbd3555ada696a674521e. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZRP52292261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b2c1e2567e0b9c799942a851d26b4eabfbae87d9f04d053a7127ccef927e9c. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZRP52292264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0f411ca6ab375d7878d1aa58ffb0fd0dbd9344e23348ad667fc0d931497d83. 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/QZTB52323916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0e8a1545624b908eeb6258992992dd256593715a0d95238fe11367b996b2fb. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/QZTB52323918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0dfd5b556bcc01a8c786c98359d6803f2f177623c732bdb349123f61783f418. 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/QZTAS2348708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a79558ce8a874031f771d1224603702bbb432b42aea9aeced85caae0d59959. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZWFG2402846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce5aefee7dcefad091eb874732585680e12f1cf89ce33aadb83b67a2e8afac2. 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/QZWFG2402847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe257a4b5d19a6117d2c54fd0697c85e6aca1b5159bbe801a7a93d6cae077bf48. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZK6N2518552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb11afcfb0ee37456d84588b0497c7af0534e88f5709edccf92f694911f940f2. 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/QZTB22549680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97253c999152ea78c4a6d2dd31a02dc7de34ae0400693512392c589cfb75c1c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US7VG2313808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3da418632030a3e66837960cbadea17231c0637f556ed6a9a5f3b4070617c92. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USZHR2100086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d1a990f503911036e52b85211ccaf102ae2d5f80b21e00b60f7b7cee56b0cd. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZRP52422075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeecc44ca9c224cc1e726d04beeca5fceca52310f8c6f4018690ddfbe9bd7add8. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/TCAHZ2402501.