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 0xb37933b7241949f3474a45fd4e32d23e039c8d84a9e0b86920d87d6622e6c2f4. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0053229d-a22e-45c8-8da4-532cc77297d2.json and https://artists.proofprofile.net/proofs/artist/0053229d-a22e-45c8-8da4-532cc77297d2.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 0xdbd70b2363384ce4d01d50d95d930a2ae6fdd119c67775f2ac114918946bbc01. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/DEYU12308033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc246936f6de37c3ae3e86f42da33246b86fba52c9438900a428b461552d90972. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/DEYU12308034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba1b0367220d3182620e1e6035daf0c59c4e628807cc3ff60ba7c476edab9f6. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DEYU12308035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea51f7d6223723a66b86f8188255b57ed655ff14753aa796dc81fc7ca6695a9. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/DEYU12308037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d32df34bbec0c1f642411abfbda71e3186eac6db0acf17e3a5f318b49fcebe. 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/DEYU12308038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b9e961f377afbfd5e67c0c946920bce85eeebb2397e0a21e42fbddfd4de4fa. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/DEYU12308040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1fd1e7207bc9a1b60a92ddd08de96224ce1d34217e3982c2a7eafa3581860bd. 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/DEYU12308073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b275ad09781e19e89719aaeb8e2b952913a893d9f05a4e4cd74902a9a798f4. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/DEYU12308074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733c84e66bc9fe972104fd278ed85b52d32268fdb5f518a065c618b64d2431e7. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:28:16Z), 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/DEYU12308075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51de6de7a9d1c65dbe979d87747fa1ec7892c34087669fd2ac933a1dc0bc73d9. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/DEYU12308079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc54fef2b373c0b48195364f9351000cf93191c4dd9b34d69a2175d8a335c88. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/DEYU12308080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b7b0ff69a66915eb76bb52e8b3558e09e1ffa1dd9a3a41e56777c1f7eb0334. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DEYU12308113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac130cf8db5f060f664476dd6bf8b6992d78df238a0df77a61a06acb665ef0e9. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DEYU12308115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5b83871f78281d27f89bc6f19df2744e58324254472615c3a8d3da6b706fb3. 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/DEYU12308117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5174f4c2967df5c0cb490fbafdd65a0a52f8d5e15511cdbc21846e1e84c61e2c. 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/DEYU12308118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd762fba085e1d4a92144c57e7c711075862229d40ed12e90fb714a3c6964cff. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEYU12308119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1604d02c4933dc4039cd094297a59e65fbad7bf9bde742196328f20890e8c99. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEYU12308156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f30217277c31f2394d80c5e6ad409a5223ddcfea143caf87969b5c59bd5f51. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/DEYU12308158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd064be394eba37d2188820773eeaadecf833a6e4fb79b818ab8395d688d8b2ab. 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/DEYU12308194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076e8a3a443e3a38767489d42a4b141dc4d43d35af64bb8b96234df0d4a25e9d. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/DEYU12308195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x397376c359dae2273300abb1689246add86f5abe75e5bf0d41c59bff8a7e906e. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/DEYU12308196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e83e176a8b2a57d00832d9816650bf6f34229fadd03fb5821984baa4e7721bd. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/DEYU12308197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d6804f9d43babc95513fa0ab09eff37b34a3b8748e7a468d880b29837c4c79. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:24:13Z), 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/DEYU12308199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee8bc86ae15580827683a26b5f922816b1ba228d7a2182273c623d68200c585. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/DEYU12308200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f0bf143766ecd358c5fd819871eae6851712f88e7edbd7866943f861d67c74. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:29:00Z), 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/DEYU12308233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3b7984e3817d9ed216300818246121b6e8a1a5e5e62636cdc7488c79c1d607. 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/DEYU12308235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2f41b72ab2744535f893e68da9242b9a3fd0658996d1f7fff2e5ceb7ffd5e4. 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/DEYU12308236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da6e69f8f114f5b90d43d1382bbf1ce22428ede6650f3beaad4810a2a58fa5f. 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/DEYU12308237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5c54cbfce5a4fe7ba2d2f767b49fb2128f24a7758bae32ea91ee03e806b9dd. 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/DEYU12308238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8d0a000ab9454cf487cf5ba33767314431a97cc43be64b5ca204b7d3112e40. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:40:58Z), 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/DEYU12308239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a9b48202e4692e714af67f3542ef31edb393927781cf29df3abc9ea630c85f3. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/DEYU12308240.