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 0xc28ecb6c6f1980cf4a1a75d0a1677b248fc04d4c7b7fdd4635fb64b14921977f. 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/dc2bc9e8-db69-4f46-af41-c9d5987c157d.json and https://artists.proofprofile.net/proofs/artist/dc2bc9e8-db69-4f46-af41-c9d5987c157d.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 0x5ec1274d1eba4a0d6635b7c3d464047a2a1552b6d5a1ac416b06ac0ec9f889fc. 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/UKRKJ1911472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5fcedd5d91eeae96f6a24600d3ce659934381b51b2d75979942e08961f2b263. 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/UKRKJ2002441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e89749d6d81849372e459f7610833e9d38595565f7c177d44e71d7dea4297a. 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/FRX202095155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f1c45997d565a8ffc71c7d98019aae759dd462234514e82e1d1a02e26d92d8. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/FRX282043890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c194a5f601f18d0c7d0ecbc95974d8f3d36ba1899d4b0565d3af9b7c8bd5c03. 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/FRX762035679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958be18815e653f9d86c1a94b74463904be1742a9d657dbd30a3f2e6586fe78b. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T16:35:10Z), 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/FRX762047131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4965dce0280ef4f2442598f344b5d4337ca0a5dab8af9d28d70914dfb264a65a. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/FRX762047018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13054ab2c35cf094d67157480d0ab4e94f33b0e43d74a54ef34716a74d4e29ad. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/IDA532010120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba713c013e620998d8bb6e82debdf8db4e8d2c941bdb8a7267c1ca449a619fb. 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/IDA532010122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbebaadb823e3f07ae0a20275703c1593a914b2843a3f090035d4164fe8be7f1d. 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/IDA532110128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4aeaf3dbf4833e37919e20a0109d260800ee45b2e06ef97172b674801a10835. 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/FRX202121367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3270fd57392782cda3a2cd5a8e2bf0a94e11b84cc2893fac511300b12dc55be. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:02:08Z), 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/IDA832109569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac82978eb84e4773851593a21034d6a7439279b3e0e949dd90304fc5bb5e4f7. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:33:26Z), 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/IDA832110779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9bc43aee1107e6f9752e0501c9f9122e7d66449a26e5cc67e8270c73c12880a. 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/IDA832109552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56fea5f96c52f360c0dc831553fa4f25b5dc16e584aed01bfa4ad766de1c480. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/IDA832110801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fbac8790ef70769a44df737214fe97a3431a7b69119f30517a07728fc816e1f. 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/IDA832109547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b40af64aa33ae721baf41ce867e674675e737e9a50bedee75a67267d0276cd. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/IDA832110817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4e355114119b14c61a6cefcf2b44105f9848334951e0b8d6bc17306fe4a340. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/FRX762336492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995814fbaf531c8531b974e2960caab988c3c36f5cf1b77e82f2338e305419a9. 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/IDA832110829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d92e6a32e74a366e90bcc071a499bc2f134034d9fc1ed0720e36cd0d9f1032. 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/IDA832110839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96643b80cd0aee970f1ef6b818c1f1d713a695bd6fd1247f626e0ce1c2b542a3. 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/IDA832110842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d13de08bf23d0f959dc49c0c431ada547b5b68f92e353cad49d4c0e7442ebb. 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/IDA832301938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe864a0462018e2ed5007c9ab60390925b685e3125400a63342c49d9784b7ff9. 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/IDA832302261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1ee29f4fe470be9b4bd3610eca1695344fd25d2b985da66c0c6cefe6489d28. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:46:36Z), 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/IDA832302435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6caa67f3b294c9d429f04fe503c6c40533281e1a582ba620b1cbd474017a97b7. 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/IDA832302685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2840fc73d8bc04036b30b71b35aac0814b51fadb2a892080d4449ab7c542ee6. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:10:27Z), 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/IDA832303231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072510ce21fbbb0e1bca0b2ac4b76f24a6756b05301e0d098d1c8ddc1924b47e. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T07:21:40Z), 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/IDA832303579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8ce1045395b339bfcc7dcd11253ed7b187fb4c4fb1abb651385d54ea24ff13. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:06:41Z), 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/IDA832403532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff79badf24f301af86da0aa4b904305ecf283a492703fc42c78db3e57178d06. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/IDA832501719.