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 0x63c07efe994a58da4c407f5595a487de02637ce3642eae92d287de6ce2e945ea. 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/ccdb1eb0-4b32-4923-b2f7-40268d71db6b.json and https://artists.proofprofile.net/proofs/artist/ccdb1eb0-4b32-4923-b2f7-40268d71db6b.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 0x6ecd05ae3b62bd30cbd08e3651654c464bf20a7f2776d264e0b37c370b3981ec. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZRP42127494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107fbd9da6893a7c5f6ca88144d3e43fb16400f8239cbf284b9722e8417989d6. 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/QZRP42127498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3eb5291251ddf37bba2602769d6741cc5d0c42c801577a378e81b642aedb5b. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:32:44Z), 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/QZPLR2145923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f0bb26f1332c5f2ba87dccd8f260162b5a28cefff7dcf7c8ac2d98f78099c7. 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/QZRP42127501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826a8df25f3810aac336df959d113acf4e237cffb147002db50efdc2332cbff9. 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/QZFYZ2339525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381bd9c3b7e4127c1e9f426fbbb73a302d902c287540f129b8329be507430f2e. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZHN42235138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081f9e56d95a8e8d604b24767bd5444c926af65fb61293a9a2a54be84727a026. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZDA42425074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724d9ecb0a42c00eef45c9019011bab8901b0706f1293b9795dfa435e2bed2a6. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:18:55Z), 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/QZFZ32437067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c31e50d46f6570c9179d5d11ab7d8c2cadbc3411db4c1b2284a36b8e86db8a9. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZDA42425075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1416697c542ae64031b177c1329cefb7dbff95fc7088fc96b7818e7aee95e8. 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/QZDA42425076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6138321f933b3a7f5d4c8f2de1c1470c4bb7218a401b11f2b35835f48e348ab. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZDA42425077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aed8e58fc776caa4d8733513bad02ee44405e65dd3e3b340ec8a5f0a1e734e4. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/QZDA42404747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5818f1e59b067aad280df91a37c01922eba514bb7a48bb0a09858158df4a1658. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZDA42425078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b8784971e80a9ac8d5f28cf83ddb3ac277df6dd2d47c3f0c1770a61b5c715b. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZK6J2400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e12531e0a09d6cb1d8413af33fc9f538c59619d882264eba0650d47c3d061f. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:53:27Z), 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/QZK6F2465972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b8784971e80a9ac8d5f28cf83ddb3ac277df6dd2d47c3f0c1770a61b5c715b. 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/QZK6J2400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb683f3e5cfcc7de454b750cfc7ca110048c7caf1c217c17b0b928bf304e1967d. 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/QZK6F2465975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08f8b63ad273aa69b15bccf14e13143d0a412291f16604b480ca9f1f0ccb568. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZK6F2465977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b52e8fde4509e8decfd7b7bf214b489e08b6b0a2b69d901e2f733c4d229551. 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/QZTBE2457502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c70cea11f0db36b6bb3011659515924c4496e381ce9dffc543ba75d4e0ea543. Chain 2 (Bitcoin): anchored in block 958124 (2026-07-15T11:01:43Z), 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/QZWFF2466712.