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 0xb6d52378c02a31cc35f181329f1a397791c76e97a92e4c0a5b98fb45a294333c. 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/504a3eb8-0eae-4302-b398-fdf5425bb1cf.json and https://artists.proofprofile.net/proofs/artist/504a3eb8-0eae-4302-b398-fdf5425bb1cf.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 0x792386d1c30a0f30daab3d5bbbbcbf3e54d8784421b87a255622619fad5caf49. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NOAGW2200039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d757736fe13a0a9976e2ccd173d0887ffcdf32291f0fc254c054746672f163. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NOQRA2272060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0108ed418ab6d39748a94bfd10342ade66d855639e3ff1791c6984ad6d26c2bc. 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/NOMYN2301010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8764c3301e46b3b432981405e07bb0195f5fadc84438dd1f890b84d8ff7c0e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAHX2492921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d6723dc08e628ad91b2bf2661536836a795f704157431e815703b3a0b5afd7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NOBHJ2407013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291287ecb77ace0b8943548cc1da256a5f8f9a77700c467261cd0dd6954d019b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NOBHJ2407010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4abf52c637d6186b6ad4207f764f2ab436882b29912898c6cdf5ecdbead04645. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NOBHJ2406010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238772d950ae02c0f47a00ef195fa8020aa767e2870c4c19301389de05a0b75c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NOBHJ2404010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c8ac9061d9a13bba0ab9019358a377dfd6cdccd8715e441657eab78713484b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NOBHJ2403010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90481d683610344b6f60db1d988c345ad6e8f36f7fd020fd529f01da6b14ff71. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NOBHJ2401010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7d212b3d919853aa49a84c4cb4599173a1b768d8113d7fd43564fe0186ceee. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NOGTA2361910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47dd938d480edbe772f154af0d5df6d38577c9ff0137c39b5554b546f81222c2. 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/NOBHJ2301050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb53073740d272d269455e840528445247d2f1d64a4a4d22417e2ee239cfc5b0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NOAJR2300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83ec571426ea2d0a0120f6d337f8556eacc75c593f357c5a88a7ce2fa6a0d90. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NOHRZ2305010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71db36cc81adfa22d77df77e713b47ac0f7a425eb8b22b22306dd606d0f0aa7a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NOHRZ2301010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefdeff0d4b057830a6b1b7686168f00798e45659a60a6ab05bd31be5ed9d98d6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NOAGW2200067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd45588873fda9ec82fab3d01da94c508b0b98072b99a96f92a72a6e09b8d7099. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NOHRZ2201010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6861f2960e54861a4a8729bbc4b520e9c18860c7efff9fda3724da9bb0ee52de. 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/NOAGW2100113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2d346afebacbadb9d2d59473bf059f8a4193e4c9068bf6133a22dad7a91a3c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NOAGW2100065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af115e93cb940b9ad6ca4b15fea99836e6ca879c67f9eff48b30d96759bac7f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NOAGW2100048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ab3241af2c7c5c6f0084a07ceee35d6d1b06ac809ce67a0ccafb0e81af754b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NOAGW2100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10914c4e31e22a1878bc1d431c2aaeee0ac6d709b4b5f84669732e9d4456475. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NOAGW2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19951fe2b3e5ef788e17c1ac7a97530970fc2d6de28dff466f81b8c5fc6a803. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NOAGW2000127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf732b1958d14a38cade70643302a218537df1b2b2ecce0fa3a143eb156ecbc16. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NOAGW2000103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273fdafe7e04e36adf5a39f4f504f77d5ff3a6fc3f1ffacedd0c050301b4469f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NOHRZ1804010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8315183d664eee5a1e73381a899334b9668c2d901228f0619a64fc65e6f5e42c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NOHRZ1801010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3125b8608ac0e5dee50b2c6e3b88701a3cf74ba7af882813d68c17d1a79039f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NOHRZ1701020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607fe8f74d00603b9ebb6fab24f791538b834fcbf99f7b8338132b6ff440357a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCADI1705409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520049b954a9f0ce3da31e158b7a3588acaf2818082052242a80d36a00c696ed. 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/QZES51970468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee6e1636fff7cd8b376c95440b17872bccaba31af0dc2f18673c78c8b6e45f5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBSMU3591268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15cb9974c7fbbd09827edde1d91f448d1411805f2ac4e2c52cda293b3e233a4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAEA1980266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014fc08225d9c66d0bc5db2c99525c72512e7783a85f1a000a38cf2825885efc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCADA1734104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43991d0b5a7793c4c1afbd39a324625892b4b5343edc21155d291f368f965dc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NOHRZ2203010.
Vi Skal Score Mål (feat. Bowlingkula, Linnea Lotvedt, Ole Hartz, Delshad, Johnny Leo, Sensei Regash, Fvoll, Mathilde Amdam, PappaJosof, Vetle Gulliksen, SterkeTim, Filip Pham, Mikael Lien, Se