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 0xe0d796b14f7aca5182627c7b1d05b9dc6a02ba2890112d14a69469200d94e6f4. Chain 2 (Bitcoin): anchored in block 954580 (2026-06-20T17:48:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b709f1aa-9d17-49f6-94da-a561a529e7f7.json and https://artists.proofprofile.net/proofs/artist/b709f1aa-9d17-49f6-94da-a561a529e7f7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Svenska sommarfavoriter 2 - Sommar, sommar, sommar (GöteborgsMusiken)
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 0xa71c759ff3e66266fb9078c52efe3b43c12cf8fd555e30a8fbeaa99cdfeb99a1. 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/USV291431683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf05b488bd5a7be92e19552d83491c02fcc896cb48e275ee1f038b9a2b864f30. 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/USV291431684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af2053c58ab918c2dc890b3b87061667fe5c4f0758c619836f4db511dbac689. 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/USV291431685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2002e5e3a839f8ea0a16a461f211297ad610854a5a3b7ad0e4c6b453223f2b58. 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/USV291431686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe1dc32eb3388bc099fb46e7de1c13f36d7aec60d5c6029cc06d9f5bec7d354. 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/USV291431687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268d89547ee358779e418399063dcd55ac3b485b7a8cf1eb5ab4540bfec6bf98. 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/USV291431688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a382ef81ee46332c1eabe1dd2fb5f16e2f0ce307e3c6d8f3a3e4672b9bf558. 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/USV291431689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31357f772c45d20995b7d1fe1c82102588f982335af390055703ea1c94e0dc97. 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/USV291431690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d42f5c2b97cd0fd25c698520dfe6773195a73777100cce8200b48d5c854e3f3. 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/USV291431691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1807d018416641dc9ab8303210b70db916ae899da7ee286ea261a91de663ef75. 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/USV291431695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230c740829caa38b2a8bf8c1dc43413f27ff2a698fce84cad1f496c3fe5b6656. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USV291431696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f7ddead4d9691371d75da578813a1faa92cb79b96c7dde9afc722c65f1e7db. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USV291431699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868c88037daa00c1449d6484686200e82ddc2124e1328e4ad2c9a73c5b970561. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SERAA9712010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431851b3efb965de31bad38ff0fd357b449b405c1046531095564717ed9857fe. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SERAA9712160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb847784b5eff9856c7428e8d9d395de57413d7c97df0dc9234fe6195922b4393. 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/SEVCE1700101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809de31eb33cdd0c8fb41ccc5c72a864e525c95fbd09350aa1df7a742a276aa5. 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/SEVCE1700104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71db15dae6a5e6102db45731a5af55d1a20123ddda00624349b4aa3781eb6b0e. 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/SEVCE1700120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94bee4a3ccd234042c68e98e8605c485189843e5b09229058af73aae0bb6d70e. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/SEVCE1700124.
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 0x165851721c8a5116f5057df159ad0c942b7197281ad4ea2c93a05f91c29d7030. 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/SEBGE0700030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea13c87a0d430af24dcafd8522050f07c856152d1bfd93e4a86c50f69f953ef8. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/SEBGE0700034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7c2e9cc66ecc9dac973a08ae0bc7e2e72e6f6cf574698b8fd41144b73039a2. 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/SEBGE0700056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702f32cedf4b1b3ed13e2ea1f81a6d138327f6b4f82a4377a019996405fb9109. 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/SEBGE0700060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5aeb7e7b2297103342acc32c79b2cce3a5ae5155b72c61a7fc5dc126b212129. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SEVCE1000205.