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 0xb12a289c73dcb89e9213d06d33651fd106932aeeee2a40e41fbd8f1f5c8cb635. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a530ba0f-0080-483e-9a3c-e0d69fbf09f3.json and https://artists.proofprofile.net/proofs/artist/a530ba0f-0080-483e-9a3c-e0d69fbf09f3.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 0xe7fc5f895fcd315ab7adba211ad65519fb1551868bbcc4ce9856f67ae887f4bf. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/KRE891800090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eda812325f3e6aabd58ae77f0287c40ee5579173b4af8177af8ad5debd1c4d4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/KRE891800091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de26f74559d2f147137a37602309fb3c3de92ed4b0749019e79b8c57b2f91d9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/KRE891800093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe160e7f3542cff45177f9466edcb487254ea7f288711ecc22ced383566919b78. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/KRE891800096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6ec5b3e7d2a6567770dd606b23f7da1cff943791b7773573a25361bba15c90. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/KRE891800097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0055bea2865fc279e34527345672235b83a24b64a0eb1ba66c2fca6b325fb123. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/KRE891800089.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa859960a2ab05adb5f6f0b47317b14e78c246210b42a4a814b6cd70cb79e58c4. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/KRE891800092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf317da826e673c66efa24da083bf057ef70af298eece9d277b3070b0b0f3a6bb. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/KRE891800094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e3068dd69e1e72d904bb8ac2b8e2b4908f6b47c29cbe63c48356132373cb7d. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/KRE891800095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe0f4999be953053f02e56e68ebda647dd8d8c8e0139f81b795dbe141520481. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/KRE891800098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d30617c4e3138622c4d1d3e1a349b71d5e8b5822af274bfdfdadd7dafdb8b6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/KRB621500037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c303bbb78c015e12e4e65b289d8e641298c97a89258e3bd993bf3c62ff331f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/KRB621500039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5dbdba92ea0de47e2404f7ef209192e51882f049564e42beaada6be5608d7a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/KRB621500042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2824eb9b44bfb760db20cd372fc38599bce44dda0e527629773660f62569a2ce. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/KRB621500034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0f76f7636072c6fe9248df508a38e2cd7e1aff52d29185f77a0d65fe5caaf8. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/KRB621500035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ccab703453773b0cf6bc3701a8fc943e3278567ceb25cb10429a94511fcb787. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/KRB621500036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43639978bd6787fafea119ffc411d0f4d42bb1238fc9e946feef2fd1fcca134d. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/KRB621500038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0190bfe2c3e5ce24a78f464b15ac08519390bbfaca1cddae25e864cd44dce7d. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/KRB621500040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87923400d9ec537c01dc4fd5b33849de3fc40a68e2e1a3c757e484e2e7edb52. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/KRB621500041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352decf15d191fdc1ec2a4126c9ef7d4455a18970f7c913a4974f6f07e331948. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/KRB621600096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de2e129f02fe996e0b4508080ea6a50197e98ed46f7f919171056de58842b10. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/KRB621600097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b162165b95031c67c6b46ab906aca86c8a0ef6bf60f9836f4dd33b66991d6d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/KRB621600090.
All the things that happens in the world
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0252b2903339bcf0598bd98583050643924e254b1b6e6495ff172b25ed2d93. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/KRB621600038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e19ce843f54137fdb4b9ef4f01e9deb68481423561ffd238ab21df966b24fb. 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/KRB621600030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d2055f571deb7589f915278a26b84f52433e127e04b93b09879163f589430b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/KRA341500524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d23ba07a724ba4996c27587710c6c7a47d3995172cf3baecff77acf24c5665. 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/KRB621400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ecc8bd0c5dc17b74910000831bba453113b9cc26a8e2fb80712470260cbe99. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/KRB621400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d5a204d6ba728fa753e20ef858cd901778ecf5f5b331f0f7387422e6be9470. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/KRB621400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895f94f8a8e86c8e4afd8dcdb00bf2bcb22cfc0477377d68f03f7beb9927c829. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/KRB621400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c00b2b4950c6cd7e809f8607f3a77d4a1e65e4b3829e985c313f090dfd00cb. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/KRB621400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b963e6fa0a7e398a33438e4a29707ada200da27f63d73bf00aeba9548dffd26. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/KRB621400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7954b881d48733a7fdb32fc6db5639443330c7adde9eaf19ccc9142e296798de. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/KRB621400024.