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 0xd4cc461ab7eef8e8711517d8bc9229582a4f37586556e1c7eb4eb969a64eb9a8. Chain 2 (Bitcoin): anchored in block 953667 (2026-06-14T17:49:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/56ef03f1-8082-4ef2-9294-f6b5bd87da00.json and https://artists.proofprofile.net/proofs/artist/56ef03f1-8082-4ef2-9294-f6b5bd87da00.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 0x8b9094986b602b46d5307638f24c87275ebdf32aae40a646e85928887cfbeec4. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/UKXN22596993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e3b1f5d1e4351036f468e77dae3c265e9b2775a93d0821b4c8cff3f4ee3fda. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:10:06Z), 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/UKXN22596994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221c08e6ca10f3c7a7253bc5a988ee40154e7d8b5da350ad5b2856ce7963fbab. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/UKXN22596995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1120abe8a644b6a1d22e5d48fa66c0951706041545d983ef7b2f91893f348d71. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/UKXN22596996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32197ddd8d451f63641c18f55acfbb520c2719aab02d4d9bf7e2e5c69e02676c. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/UKXN22596997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0815736d4529125a3e86b91b002354e4440642375066420aa71d2350ad93f1a7. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:01:01Z), 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/UKXN22596998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9624177b5cac634d8fe0505e5da67951ddb86c46e27176e5d12aae5fbade26a6. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/UKXN22597001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x673b1b8e83a7f776d980f13cb1b294462f79714c81d997ba8e38ec0051eb6dd7. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/UKXN22596999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4daa829cd1cb9b70a6dba0294da0b046aa90ccac9afab8b96ae3cfcf2a378088. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/UKXN22597003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29988a172d2ad63b89214f2cea723abe70ea650bf6da0150c999c6b378cafd9. 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/UKXN22597000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5900960b1c3a46bdc71647bdf89db62e705af495ecdc6cda83aa460c4dd043f4. 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/UKXN22597002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8e49fc9cec06e00ab32f402d7bd7c010a22d0c6642e2a60c3350a6bcb06baf. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/UKXN22597004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5dc73c73bf95a0cd4ad979de0a5351edc8f301db8edef645098c7cacf281898. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/UKXN22597006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a2ce8b9205219c57e11188b448a0aec8940a617789d9e3148abd32c9934804. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/UKXN22597007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0624b08cc8d755cfc4226b84754810af1a81bfb9dc168c796e2ff902420633. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/UKXN22597008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa728d9be23408814a6e9b1c1c3f658d73e83f10505ee05e89f4a20742c9edb. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/UKXN22597009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e6b0c1924e482dcfbff0f0bcd11e796bf26444666ec8aa9ec3f2d3955d952e. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/UKXN22597012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed579c909675b586d28cbfa059f798baf46de132b5fd7308c2cf4046f7c1e946. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/UKXN22597010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac1ecdfa329d39c78ce9c680a714158b9fda6e132f103c36b471f58374c4223. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/UKXN22597011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350a3ea5229582788b3190449fa394ddd04b4f4101bb425e3d30629a4650ae37. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/UKXN22597013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6661fe42c3f1629a249cd186d307b25e1283e024434bacefef305653a5abadb3. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/UKXN22597005.