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 0x973d8105f25adb5396cfefdb65b1cd982703c486eaa33686e9457a8ab4c34dee. 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/1d31690e-177d-45ed-8916-752f1844fcc6.json and https://artists.proofprofile.net/proofs/artist/1d31690e-177d-45ed-8916-752f1844fcc6.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 0x94b24b9f75b3f5dd328a664299e927f2414ac382674740d2339bcd49f3d5c413. 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/QZK6H2381755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ac2889eacb7596bb20619d24ab7492b85d8380be8fe5cff84367afafd2eaf4. 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/QZK6H2381756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe2f6a26f0b3838d7c209cf372790512d0cb345c4e1ea680827409a81c215c3. 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/QZK6H2381757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e2bf83b2b7ed63d4646120fc45cdd03096c1a815fb2c18636e17a0c5b0f000. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZK6H2381765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaee6d923865ff7a8e4326e1482a91a9b145ec856234613fc470779e4a8fc5ae. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USA2P2454680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44f8ccbd1da19e216bfc851c8eb0c727255b45d495fc361b75826505b7b4852. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/USA2P2504979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2aa1ba95aca07eacba602e1cda3340f12e3afe78a2cd906acd7a29f686c0dc0. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USA2P2526735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856943b6f2a5205b0e881a9b2c640cc982f0d4c1964d1e5da6cc48970f65ba98. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/USA2P2526739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f3bf76cf1868f0f4d1d6f4bffca1660164bf23f4e8add387aacda5ebb5826c. 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/USA2P2531268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fee401498774c45321a2a7f63964c45862efd11492ba916e5384f2c9b24d352. 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/USA2P2531765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4969498a8d9f05a3e01b905ca8600bbdce4e47f163ff6c59c0efc90ea0508b06. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USA2P2532356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb542970a271e8fd4066a3a6bdbc9d87b830b5d65e6a30a9480fa133396992390. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USA2P2532357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de1795fcbfede276a97d74a9c57ea2d676b2d9ecdef1ef7aca80710c16e3217. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/USA2P2533131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2aa1ba95aca07eacba602e1cda3340f12e3afe78a2cd906acd7a29f686c0dc0. 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/USA2P2526735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253da98c385ce4f6d142217477c5ca5556f603a5d03c0912cc32d6fb7982f852. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:51:07Z), 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/USA2P2526738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ee5608bd20e15a241820a735d39bc41897113fbd122736a329dd47a2be1915. 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/USA2P2526737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856943b6f2a5205b0e881a9b2c640cc982f0d4c1964d1e5da6cc48970f65ba98. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USA2P2526739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4969498a8d9f05a3e01b905ca8600bbdce4e47f163ff6c59c0efc90ea0508b06. 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/USA2P2532356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb542970a271e8fd4066a3a6bdbc9d87b830b5d65e6a30a9480fa133396992390. 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/USA2P2532357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a9e9593d26c2271061fc9f706cbe41a54eeb7545fcd4ad954a5ac4aeac5da7. 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/USA2P2532358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7fd6ada9780bdd47882315b0fa49c2d8a9ec2edb348799c3f0129c4ede689b. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/USA2P2532359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fee401498774c45321a2a7f63964c45862efd11492ba916e5384f2c9b24d352. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/USA2P2531765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f3bf76cf1868f0f4d1d6f4bffca1660164bf23f4e8add387aacda5ebb5826c. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/USA2P2531268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ce04a0db6485cbb58dc2b08a04d07a7ed93a2a6c877fc3dc0691f44fbe424d. 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/USA2P2532360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0c862a9ff72d0d71e9911d75b82b03450e9a41bf61edb265798dd161554152. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:01:49Z), 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/USA2P2533132.