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 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 0x92285d6e4bb95d94ef202b5db50e648064f23284e176abded285fcb2612a93d3. 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/e817fc92-77eb-4e04-a7cf-bbd400e3770c.json and https://artists.proofprofile.net/proofs/artist/e817fc92-77eb-4e04-a7cf-bbd400e3770c.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 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 0xb09ed6164f957cb6534d572339d68df83ac3ea7ccc810bf385b370ed5063c06c. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/SEYOK1672806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa01232b496c6fb2c0218e6ec894063ebb5bbab62cccdcebde9d21b3982e2ea. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SEYOK1730581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9aa0028c7e386ebc9ab17d602fe49d2e690cf9950a9fe8566bff05f2b72f5c. 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/SEYOK1809821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd979cbdd566cfec2a831d82867afae57fe7ded9effe950854421b9d99d29027d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SEYOK1926380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ed9194e8f22d07839cffdaf631cffbae4cecf373ab0cab8039ef31c34e1195. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/SEYOK1926382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0da7cf5660e38b6565732a34b0b0c659deccdbbdd74e05f6152b739c152ef2fc. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/SEYOK1947166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68811ee0e70df180ba40a4e6f067581b2edc68faf725c52131f774925015e98. 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/SEYOK1947167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79658492540729bf17372b2ca5dfde9c997aba3421e5759b7d4563c57b891905. 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/SEYOK1953275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae713a6a1d93474e96bfe5789067527b584ce34ce4316874c1a7ac6b0f288de. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SEYOK2105110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15eb10ba3b7e37f1487a23dbb71a03b92162e726d7d576be88196cd1cdc4cc6. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/SEYOK2205889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9081557b5c4c1762dff079d573cec1c5f19db1a0dfed82bcbc4f7b604ecaa1. 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/SEYOK2205890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20053f77179ff4946ad6dbc3d8b2b1e68a3745972a15ed4553af97ffdb481acb. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/SEYOK2205891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3869d604d9e2b06ec7bbf574e95383aa24964104fc7ffd9fdb06932345cd2b74. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZES92476402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67aab550ca31396145e52dbdc08560f66df0856e78f35d554967dbff3a35a2b6. 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/QZTAX2483537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f0c397b857fbab958ef651dd5e2e61c4880a7b7686db301a79cb5d97119d3c. 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/QZTAX2484213.
Jag vill inte dela min kropp med någon annan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52289ab08884ecb35e9fdaf42b57ba4440d76420d915b4189b080744aa6308e. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZWFG2435016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab743a4f7618243865c10a4e7104b3416b187cde2818ad68d5f883d9440923a. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/QZWFW2463262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e333eb7b38fea7ef284f35256f15c1cb2d86d5c10837e37604150b860cc76a8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZZ7U2452584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f006b16018896fa248b1ea3cfc7329a383047bb73f624693422b037ec27a52. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZFZ32585313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530053914fbdb6b27b1603c0d9002126eeac331fdc0f486b1f2f84917a92d4dc. 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/QZDA72511308.