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 0x2c9f33b36c332a565d1c15d2ef7fe9c9a6c303087121f44450eadba98bf6f6f8. 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/17ff7eac-1a05-43d8-8969-2c2ec2feafbe.json and https://artists.proofprofile.net/proofs/artist/17ff7eac-1a05-43d8-8969-2c2ec2feafbe.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 0xad85612da87e50b9f9aa7fc0f9b4d5f11109f1611bc066633567501c621bf3f2. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:36:20Z), 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/PLL371400596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e2c5782f309946980086bdd7ad3e233f5d3ea1f3d8191ce23a57949cce5253. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/PLL371400600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb1417406ae422f2266ad74a88f7e2effffd3f23bc087cbc8ef1bdfe59f0981. 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/PLL371400227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6bab9263b9c6809aebae3f172fc6cbb3c41f93648f1c888c32646d3ee7df24. 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/PLL371400230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ad7c8225a5f114f3d485d1a6c69a1584296691e6357f7691924ac2a94da3e8. 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/PLL371400233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab89ac61ffc07304457c1d4ca20e6dc8c2f631ac39478efb1aaf1ad738b0c5c. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/PLL371400581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf787ff3a4d9f1b3a8775c27e85615ef01d4ad1e86a908f8e4c547d6e39446f67. 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/PLL371400584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7cd34d94bf34c98fed221c914804c6785b0b28bc4de43896c1096c9bf296fbf. 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/PLL371400585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3176a8267923c53075df03ffd0336d60336c6a43a19325fca46f5d444beae1b. 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/PLL371400587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5e04ec064d0d70ffb9881d4a22eeec71bda0243d6341b3385cd7d8c49c03b3. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/PLL371400590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1718402d2f4bbfad17803106aa4c04911dd4e96a875772c60e60f967f02fc197. 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/PLC062011389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa637bfec3f1ea88e866e1d641fd705513016ab34925f9235b1044ff25158eabd. 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/PLC062011402.
Aleja Nr 6 Grób Nr 4 (Odpoczywajcie w Pokoju)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6915240ab0e482ce6afc3b97dbeb3398b968fbaf4fb3564dee2c4a21519ebc1c. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:31:30Z), 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/PLL371400252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d64c36100f9833cd095f500bf57328e06a48edd7e4992251fa5d8c9ef13917. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:27:19Z), 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/CH6542378488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc20cabcef9faa3df5a9e2ec5a6c8c965ea8d47a2ffe9e858a26accaa5fb4ab5. 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/CH6542386651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d14db420bda3ea0ea1049adb099930ce58a8a1dbb116e79b488ca6f208d4eb. 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/CH6542386654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627d5b800d533cf40ebbadd3f26cb7469283e335a0dd3adfc3e34e254066a8fa. 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/CH6542385233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2322d1a01748545b5dd4eb35cc98bfaa38203818bd88fc3776ea3750a6db99f9. 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/CH6542386659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7494ec569ca5fafdb51a8d158efe8cb89a2a86a146ddf45a3254e8799fefa11. 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/CH6542386656.