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 0x593c0436f5d148d6ccc5ac503a47b0ab7b72d3bdd54cdc9cbd59a940aa960ec7. 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/b6ba2223-5cea-46f0-9451-ad4711e4baec.json and https://artists.proofprofile.net/proofs/artist/b6ba2223-5cea-46f0-9451-ad4711e4baec.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 0xb78eb82edc3848a257c673bf78a374cb75e721d1c358e9fff71575424d3edcb7. 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/SE6TI2348100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227293a11e7d0c5a947acfe535c1036e8677784b91c815c4de93d64eca44c561. 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/SE6XW2326181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69a4591bff19b2e3918dd6b0c1047faadfb894768da19bb597765b98c97fb63. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:03:54Z), 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/SE6TI2346194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f6057e17d948e9d762bd6b2207932cc10cb9f7e080919b769603500acaa663. 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/SE6TI2371532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcceadc2689f55e22c1ecd8c66377343119abce90797354f7712846fafd73b71d. 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/SE6XW2374972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19dba4eed1e37ed9870be3ccf695e66c87070c3c0467feb1be2e1069753ab1bf. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:01:51Z), 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/SE6XW2383991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5f0aa811aaff3ad6aba22aac9af983c179993c54356711009fa430f745289c. 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/SE6TI2366970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a404ff13ba52ea2201849e12b51b6838898a89e43a00eed2eed0a2abe0a099. 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/SE6TI2334407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf31393773864dd11886deb71a076e29fd26649d6d7f8ab4257cc96d2a321764. 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/SE6SA2379144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a981322f8e0ac8450a798db42648abb4f03b7a3fbafa87332d1159767d4119f. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:04:40Z), 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/SE6SA2312481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30aebea5da5e2c5ed56e81af096c0eb84bf5074f4f2821d2ded4d3459098d3df. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:09:59Z), 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/SE6SA2394344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e6d4836b899c3a2afcf21581e1cc5292b0e2ab782e92dd12b7eabd4638b5ee. 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/SE6TI2398079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900ccccc41566c7ba9090fcf76dda87317e3e8ed121e040cb37aead09a9436ab. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/SE6TI2338149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558b0a5df85d28d5ce1c234c1cbf48e6bbbeac28ac5f61d483f5d2406c3d6f49. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/SE6SA2383387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc08ec46baea18b43bae713463b93d93e1541f814a61d5faebaab70cbf97bca. 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/SE6TI2377528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c426faf763a84bc2d237a75e47309dbac2dcb88bd2845acb00dfd246a05722f. 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/SE6SA2344727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85a987d52a8aa9ec5a349a57cbc6cc57c24ff08c8986669ced79d04cbffde2c. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:10:33Z), 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/SE6XY2310912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c3cca4a6cd02a0e3ec1bc162aa216de707fbf1e3de7adb74bd940773597e4e. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/SE6XY2326984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87154b44ee484ebb54e4429435e256cdc8cd0b5c52d5cafa1559146898d8f566. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:44:59Z), 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/SE6TI2369413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a37ef3ff8f6e8ca8fbc314b229ef3539d78c163e29fa8ee195facedd887f973. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/SE6SA2348338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacae10d5ca6047f63847e134340af8f34727c1a1471248483a1d6e4059388778. 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/QZNJY2409513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377caf98c332127567586c00dfe6f79d91a0c96466a0619ced4af5ab05dd051f. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/QZGLS2517545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d676524a749b548b8671fcb717e5454c42575c9bac7364547b54cf94c8838ba. 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/QZGLS2517533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2bcc533ff2a6412c58fe5d4bb915578e17de83b75d3a81209b6719b0703b976. 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/QZGLS2517529.