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 0x2a9952ba1ae01bb834187a2fb9b4177499a9f87d7b54dbf5a72ec8248ba30536. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3ab41381-7d0f-4e58-ad6a-52895e3b4915.json and https://artists.proofprofile.net/proofs/artist/3ab41381-7d0f-4e58-ad6a-52895e3b4915.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 0x44e839f458d0554e0dcc7611cd01b9f027eb0428ee05eec5bae6963f48251e50. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/SEMDA0072020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352ff0b670c64c61292247de468c7986cf9209021cbf09bedb40f246ad801fe8. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SEMDA0900401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74e349e501a7e0522ec4bf100add5fb987adf3b3cf898cffdb3cdf511ab232a. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/SEMDA0900402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46bf5b99329c0d3a62d104ff1e9c3781be6f09436845d8d207a470d15fa15365. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/SEMDA0900404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb9721b3c9d9c6f9ff783a614767eb966cc3e61ccf1fd734e8d6c602f4036fd. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SEMDA0900405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7f010f28788d6f56e5428e8e8eeba63d64b62b1ac7be3870bdf0fc1c4669d4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SEMDA0900409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a12d2449f8b5d7b5bf6efae34ea70031ef10ec7ec728ca1c4e68c6733edd85b. 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/SE2KD1500801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e8e6cfdc9cf1d3a7be7ee978a01c4f443074afffc252f8d1eaadcfec5410a9. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/SE2KD1500802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b54bfb564057fdccca7569e3bd9c310be582effb407bd40140fa0cb12bc64e. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/SE2KD1500805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b9f37d7afd3d993d4a861a3fdd2d9eaf29148673b72c10bae1cb0c4b9193f9. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:55:55Z), 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/SE2KD1500812.
Snygg och kärleksfull (Live från Söderhamns Teater)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3877156e17a63a55297bab921ca8beaaa8bdda6b74e081574573b401467fd8. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/SE5BU1946828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d943a9a741b3afd6742aeecd50e92b6258c89aa2cc5b8054218eb5337fabdf. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/SE5751996817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b75bd8a4b85cc6d7b49f72e88c5eebe699e125740c23c1172fca58f3696b3b. 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/SE5751923122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30184673a7460d093cfdb55b8245b4aabdc48a3ebafc3e84e51107237cfa743e. 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/SE6I32008708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc342f6ea42333b3b6fd7d18c9c0e2cef76f2aff657eef54017106a6da2dfb1d3. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/SE6HN2456947.