thumb|right|230px|Dan Hylander (2012) Dan Owe Michael Hylander known as Dan Hylander (born 21 June 1954 in Malmö, Sweden) is a Swedish songwriter, pop and rock singer and guitarist. He has collaborate
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 0x3cb32789063066e39c49e9246a3a0c88bcd25167ef0cc8fa5b11e9b1bc07be88. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0ddafe08-dec3-4c75-b8c9-301e29cfd135.json and https://artists.proofprofile.net/proofs/artist/0ddafe08-dec3-4c75-b8c9-301e29cfd135.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 0x32c788975ffcdd2566c5b17242d425b3ad89b0726683d88337f0cc8c66be9479. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/SELDA9600201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ccf5afcd7852c298e0df870445e4758951992e3e6dee87f5a66fad6cd0a935. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:08:02Z), 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/SELDA9600202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9edb086b423a625b52701170502f94b8ee2160ec71771e9e0d5432b19b0211e8. 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/SELDA9600203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ec7093199e4fb6485c5a445e1caab1264d14a1266653f6e2f5db102236800c. 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/SELDA9600204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb736d7732b565a635c7b92010624b3bf154a51b8aa2dc12300e638f2fbd13294. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:22:10Z), 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/SELDA8200201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04ca63b2e4d9b88cfca08ab0a5bdd136838d54bee708179df34996a0e2f3a7a. 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/SELDA8200202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe2558622b9811ecc193331be9cffd7cb7729fde9a223a1e7663bb7859c0351. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:14:23Z), 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/SELDA8200204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12724a90e95fa62391fd55e075a452ee006aebaf44df6d39a822408f3e795895. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/SELDA8300401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc119d9073ac733ebe7789e7584a80119c7061bd8c2e347eeca73db37588947cd. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/SELDA8300406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26fcc053ffe0bffe319de1248be022b59dae13757161cc18150db34fdcc6089e. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/SELDA8300407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f70c8c9a5ab2b606053f1b27c8562478dad08f8cc94e7dec1b73448e1c73953. 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/SELDA8300410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71420ccab99c8695560f00f159713a06cfe8d552beaea55362e4dfb52a72ef2. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/SELDA8300405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe74149bacd4c700854512100d6b5926e57d46a7ae4d4d16e0cdf01817aa65a84. 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/SELDA8400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67b7ea43d86ee109676290129670cbbdb6ba77911d1158c5787959818562b45. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SELDA8400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb813b4db73383f87f9c6522f30046ee2ece0d22471bb803f0c3baab4185c97. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SELDA8600107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07fbe524f196cc3c31b6479f7bc99f3d67441e34c039ded8d9fb0fd0da9d78e7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SELDA8800202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e451007ac75ae2985c6b1245fdcea3f00dc1f121be7b97bc2bc14747ea57dd. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/SEPQA1800026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f779377cd8ecad637485503c5573e69f5ac3465c821b64fa85f477cda525253. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SEVKF1100401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d008d0853d60e44443f5d5636ff28137a7b3b1ffcd5320026768bd4b4ba8e9d. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/SE58H1800201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08bb9654cff6a1d8ea142b75ffdad041ce863989d8a7adea48f273aba892f697. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SE58H2200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe45dabc4d355b19f873a370182a9a6438f4cb6fb9ea3d0928911282747e651. 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/SELDA9400116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc085cb89c7e316c562e2d211121ca8a93a20b0c2369620e1638a0e55ac3c87f2. 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/SELDA9400118.