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 0xc242ea698070c82c7fbfb7ecd69885a359b63f0445842a270e3a75fc1f17e451. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/608abe7c-c804-49a3-8d9f-4f8554ca2e3c.json and https://artists.proofprofile.net/proofs/artist/608abe7c-c804-49a3-8d9f-4f8554ca2e3c.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 0xbd3ab2ccd4f8b79baa880113df53ea7485e4156cd70fbb59351dfac615eb5a77. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/SEBGA1200817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f369ec4c1f20ba14e940aa906a42eda29fa480e3fcd0a89cac93f25cb21d346. 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/SEBGA1200818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6157dabccb3377ff1048575dcf0804b2cedeae28fe3d982ac6104a834defed80. 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/SEBGA1200823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5cd81f1091063bd10ea278debffce309af99d0e444d833a189bb9d3af4a33e. 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/SEBGA1200826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20fa50e3508b6c59853ea44d31a01bcbba021de7e8f55d98a75de5352ac109c. 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/SEBGA1200828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2029b7ac36843e71c2c7d5a3a296d367d804de3fafcb8266ae4de987e188afa0. 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/SEBGA1200819.
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 0x1d950dfa6ed08fa87fdb77eb9f1b3a3776ba3a1e16f77d29e9debf3ea4c369a7. 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/SEBGA1200820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24563f6f0fbf15b66063798ae85d0b07f1c362fc5ad584ae99d44276ba448d4. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/SEBGA1200821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab898aea511de267fb2c15c5819f8f1ae77a1ce5e0bf3ea03fdf2c5ba7b81a45. 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/SEBGA1200825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481487daaa7f3e3434568f6fbe7de74807771f6c1a1135e295e696f50a048cbe. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/SEBGA1200827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce04c476dae06548c5d80c54ec63fe4bfb1499f2b581ec90c87e49303cd0535. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SEBGA1200850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b7cb80a8cac987035dacacd054b06b091b849164a5ef217c81841f6ec212d2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SEVGT1200601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044c250a54464afbf28dc0ffd2b29aad93e3d1ee78fe06098ae22f750cba3e73. 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/SEVGT1200606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7967f419bba6bddfd9164e4908d54c133b8a4d329a161fcee94303ca413c58bc. 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/SEVGT1200607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1856eaf3c82f0b31cbf4ec9971951318a8f9501f201e5b358700edafa52b7cd3. 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/SEWGH2001102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2002abad3afd9030ac4ce114459c330d7f0ca9ee2d0fbd09145d524bb18a452. 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/SEWGH2001103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee59ada3045666c821514f0ec37656b06022db33f8d468e2b5f4705b854bcce2. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SEWGH2001105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86646a696feac90ca28a8e555ce1c4fa6ddf9efbfed41c78c48f2d2fd4da741. 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/SEWGH2001107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9ca79f3422ccb0fc447eb6efcd76ecdcb7b084162ef82bd3fe6fed89d6d310. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/SEWGH2001108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd9b9065b6bd475e07a848f0dabd9638db030aa64987ac7c1b6d2e860e53af1. 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/SEY321300201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1e5cad00a2110b48ca34105bfbfb5376aa1cb7d483d0e3f3a4ff9ebcabb2c1. 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/SEY321300202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e703314c46af50cdbaf9da44fc9355dbdddb4583893243cf3a870f71fa7cc19. 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/SEY321300203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac2c50c39cb64253a6394649aed6a07a3fc8e8f9354dbfb01d4510c8dfa63c2. 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/SEY321300204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8206ef344f202514e85a1071d995087a351e0e28b10aaa5110e71d1f2ebe339. 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/SEY321300205.
Spöke, spöke (feat. Thomas Öberg från Bob Hund)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a531e6463b3115bed9a774ea91d1557fc1962bb5f3a08a9cb8d38ff56989f5d. 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/SEY321300206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038fad4c8a307919798030601544ac539389551650ba85c50ca8ec833c77a3ad. 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/SEY321300207.
Flykt i ett pappersflygplan (Baklängesinbrottstjuv)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a58fd49339de864823346726ae2288764664e31c74173b0701a0508a249914. 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/SEY321300208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1a7aaeb1c4049ac9b2be0bcec9ff8aa8ab7b103bfa0f504a7eda3c66ec7cf2. 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/SEY321300209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe259987a4e6a10513d093e8c21b89e32ca2b835bd916ccc70765905a4848879. 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/SEY321300210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0fa16788ac2eb155b9035c5c117be518e4caa7c8776ea201958560bff84074. 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/SEY321300101.