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 0x8f0029230ef4429528c2351e7f22fe83a24d102546c4e1a5cc9ddaaa60c815c2. 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/1fcff8b9-7188-4084-8acf-a9287d1dda1f.json and https://artists.proofprofile.net/proofs/artist/1fcff8b9-7188-4084-8acf-a9287d1dda1f.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 0xe54edd8ba3981ea930adb3620d78919f5a487fc27fc222598d450b6e295a718a. 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/SEPQM0612504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb783afd0abc79e3e9912398f3f5ba46738222b2783f41a61fd3c675b0e08cf9. 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/SEPQM0612508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6a9bc884ebbbc3d72dd3e2cb170d8bd095969c3a58855571f0a46e6b3d7556. 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/SEPQM0610881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab17001865a95ac822edbc09e2cf8a91ec26fcdb77b526f0401366429d6edac. 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/SEPQM0610883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb022b692badd73b0e2056f0505c1429ec5a48f9ccf6621a7ac5f226877d052aa. 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/SEPQM0610890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a28d4e91dc1be13ee601ccdc61feb548bf51bb151c05b4ee8517665d17e934. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/SEPQM0610893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d2eae9ce33582a9beb96874f59abaf937b562dcd0d4a942d827d0784be4a8c. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/SEVSZ2202901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a9353d85430b044d0c75e380d791ae5680ec0a0bfc901af67ad01ab8d9a972. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:29:42Z), 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/SEVSZ2202902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51543b7eb3d315c9a1852f856f2e10e737bc4b07847d0c363dad47559633eb8a. 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/SEVSZ2301201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51543b7eb3d315c9a1852f856f2e10e737bc4b07847d0c363dad47559633eb8a. 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/SEVSZ2301201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a9353d85430b044d0c75e380d791ae5680ec0a0bfc901af67ad01ab8d9a972. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/SEVSZ2202902.
When You Walk In The Room / Varje gång du är i samma rum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b915de7aaae6f654e63f06a987dcd5ecf689eb042642a46d7548df866daec45. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEPQM0610887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223ff6a7b6a465f4aac07f681da22bd220f5d6806529f78b42ecacdd04b3ed40. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEPQM0612500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7654992c46c6e31a7d03f0d61571d78dd3f4a8f5022a9595b25f4b6e0e1d5e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEPQM0613090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a28d4e91dc1be13ee601ccdc61feb548bf51bb151c05b4ee8517665d17e934. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEPQM0610893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6a9bc884ebbbc3d72dd3e2cb170d8bd095969c3a58855571f0a46e6b3d7556. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEPQM0610881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea04e7c21d8e1ef22cece05402d254b1c74f332468a72c40e8cd2f8cdda70489. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEPQM0611479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360aa51432584e251eea30a08609014f9927edc08e1e8c0dd17918518be43634. 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/SEVSZ1603102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495f4bc486ddcf9c89e8b0fee14d4c5c30011ce9a43ae908c530ed6446d4c6b6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEPQM0611495.