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 0x635be8668d510d5ed43dcb180820813dd3c619d7e300a5c6ac73762ae7d35395. 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/63610f4a-4a64-49ee-a1b6-85ccdb03e414.json and https://artists.proofprofile.net/proofs/artist/63610f4a-4a64-49ee-a1b6-85ccdb03e414.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 0xeeeeb64b8bf37d38e0179966ec32c95b353abf81de4d7d7997cc212ba8819d07. 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/USCGH1578008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394d3977528ffef063cabf13b4180018a7a59a4c4162b4096f14aa41de1154dc. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/USCGH1578009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8d0aa2890aaf556314ffdfd03cf6a27611b0f4a68f9fd476e544ba0b99f27b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USCGH1578010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b1b5873d9d2314e24e68c662953c1f8d29c315161cb2272842a806c7fd3652. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USCGH1578011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907cdb9c3a2c69598d7388f57d6545454a9c454b4ba9f5f4c7f7100959833c2a. 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/USCGH1578013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21245bc9490ddd9a394e5ef36cc2aae2a7d6cdbda96bdd8ce4bde6dafd56a532. 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/USCGH1578015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930687f280d0298a8b32374427cb20d059a9bb5f2f6f757c1493a81ef92c9494. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/USCGH1578016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20f10e2db3edc6657337692bce5ade57dc7cd8db1486454746e0062059db304. 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/USCGH1578017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602073a747bcb8214f2312f89b0e2484b9bcce0e2e75d449a9be153db0b290ca. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/USHM91649293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221b0772e87851cb28d52bf1b498abae8289be26ba74d5b6602f499059753e27. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USHM91649294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45af9e5bf2a4fb30a1c159dd36710cbe53b60aa94cfe5827835003e06a19c4d. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/USHM91649295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123c08f409d449ca197469235242d1dabc199a82e021f5a205a68e3c37daf7b6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USHM91649296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079e19c18df048f83de1f51c1d155888b06243374a3e2d44557b93ec9ddfa637. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USHM91649298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5a6131ba38cad8ff06e8c72c286adccd849d1af91b2dab768ce23a89db9999. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:53:33Z), 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/USHM91649299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363cee10d3b96d19beadbcfcaa5b26485965720ed80d55a1eaa4a0c78d40fef2. 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/USHM91649300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462daccdf742b4b7b4a3a5e56e8fbdf3e0ff4b69f1f8ae8822950194b149cf5f. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:26:31Z), 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/USHM91649301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446198effa3380c5e3e6d0335346898db4273042fbbfab7692b4ea99952c1245. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/USHM81871473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4750f49696bfe68ab9e5a3caad1cdceaf5ed58cca92d63974181cba7248f1c5. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USHM81871478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261d1ef97df9aa13255a2d263465b2b42220af6c81b68a899f244f6d25e60398. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:52:39Z), 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/USHM81871479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ca23811ad9e19037bfdbce67c576c987e0efa511c632cc90fbfc342106d61e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USHM81871480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8afcfbf19808b6dd1eda93cf3db0d24c7704e73e301520d9aab86a83fcf1e27d. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/USHM81871481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77eaa3d3f0d7a20e82112e810f60df1d8c1d9207d6f7eab303dbc3c7e80c0f24. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCAEM1960336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71dd3a3d18d43a6d41234362276a02537f180c06313a95c9064adcdc923943a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAEN1946530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2834d7d5b44022cb4274d2f9415fcad2c631b612c707f8a6fe616ca87ff5ef6. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TCAHJ2364212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabcb3132df24bbc634edb346c016894af67c3f4578b70d7f6b78c55f1a2bea91. 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/TCAHJ2364358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2179cf17a8488fad899c3f60a4f0ec8b8bdf70ab7e2b722ceeee06240b98f8c7. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:01:30Z), 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/TCAHJ2364366.