1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xcbc0c3c82af4ca7b5a230a098928831da20731e85335ea4f5912d661e730a40b. 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/e9b20b78-4159-45bd-9ca5-7ff3ea76e777.json and https://artists.proofprofile.net/proofs/artist/e9b20b78-4159-45bd-9ca5-7ff3ea76e777.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 → block OTSBitcoinBlock must exist at that height 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 0x2548eb1bbac6a474af17416335c4a177dd33a70edf3fec6f24f8de5244462bc1. 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/TCAEX2025463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a8d1324cb566ef87e52dc6a239fcd487df7b07e0368612c4e5ad3a9b0f61e7. 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/TCAEY2001217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e23a90d7a406a049286c38e2688d46ce22f904aea39192e11d428cf1b70a619. 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/TCAEY2047700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aebe213a9a66df2d4359fc83de13a22c96e93983c3ee2b191bdb7fc668fdfca. 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/TCAEY2047703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac001d45d7def09ac1a9ac7170465b9df9a7fdefd95d3a280fd7b51e310f00fb. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TCAEY2047705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce086f46d656285846dd574c7670be47fc56d3f7756c6ca95004a3d5244803d. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:02:47Z), 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/AUBEC2164126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ce1987bb47d15cb21b7738f051086a80c397fbdeca44717b13505fafdff343. 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/AUBEC2172201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66b8132dc9308d15791ce5ee669a7fdbfdb8aaee26b139c1bc7c74de3f9b451. 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/AUBEC2179997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc2572f0f072f0d31737c4f37effc194ca23bb03cec8410dd61f4a0c2287e89. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:45:00Z), 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/TCAGK2222626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3249a24bb064dc115d3162cd05f978f27841826a9735ce1189120275668ef9c8. 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/TCAGP2249093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4170ff5b878d65e5a028c13ad55c0c692017726bd345989f0f6132f70c4685. 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/TCAHG2310340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c806cbcf55a36ae1d9111e18c40f3fbff9470f78e17230397ede02b4aac98d2. 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/TCAHZ2452525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c08094cf42e0f6d49058a79f070c6a8db1a1f077376bfdb145737209d0b4353. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAIP2429905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7232022d45be107184756f1843ac646ff9c4f1e90c98c4895ecb24c7aad798c. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T08:00:33Z), 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/TCAIR2409713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5b71f41f04e0bcf8960e1532d2dbda76fae04d0807557edb80ec1408faa649. 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/TCAJN2570907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde72cde983b10ebb721710b1a255e5d79de34b82a89f268cef662309694426c8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAJT2541056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553b04a0890b016a03ebe2c6c30bad138b15667c083e619faf1321a1a97fcaa6. 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/TCAJV2554845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa714e8033ad6a1f11f073f3f811ff7d8d8261ed1be846f8e589e1ba65d82e607. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QT6622559037.