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 0x719ac649a4e4b7bda857802695776024ac31e68755e4ca76ed1b8b7a8a3c22fd. 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/1548deb5-1dea-47ef-9661-c03e13e76629.json and https://artists.proofprofile.net/proofs/artist/1548deb5-1dea-47ef-9661-c03e13e76629.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 0x02946c1230197d1d1478b9363b9373240fd9a14955680dfda555267b21744395. 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/NOXUY2422010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677fa967fb25336b1cfe42abd537bfb922437c7a2e90486356903b61e22a6cc6. 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/NOXUY2417010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3740e6db95c2b2ab05db8dae426153852e7750692da3d7272f39f4b204ac6d. 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/NOXUY2414010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff4c527aa8608bc05527b41477c4607cd470c525a983af741b30ad656a33bd2. 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/NOXUY2413010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f17e8d7c8b305c13baff39ef521585237277cf3e55a4a73eb80e0ff502ed47e. 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/NOXUY2410010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d2cf6ad166ad85710062fe493bc6dd8499598ae1ea911aa08a1e7713a934ec. 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/NOXUY2409010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72aebf7fb1ea252588ce104bb46839378a60e92ec5e0b6f4d4f6fc8b72d718f1. 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/NOXUY2408010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6c14ddadb43ab1e0549454b461c22b8e7b7302ea81dad26ad683c9140a0e3e. 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/NOXUY2406010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3fa6cfa0774e4e6507407868610c643ce8eeb8a81c6e9cb110243e07d3b1f50. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/NOXUY2404010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66fe00a9e84719cda335247296bf11ccaa3bcad1e5551c64be65535c50f0a2c. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/NOXUY2401010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66fe00a9e84719cda335247296bf11ccaa3bcad1e5551c64be65535c50f0a2c. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/NOXUY2401010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d3061faa50ecf870708642103f97a0ddfa7aa967d03bff76ffc3eccb689287. 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/NOXUY2319010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01a6cc76d454e8ecc8699b502bed2d84e751a7fc3852a3eda5be0c72c240cba. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NOXUY2318010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4f2ebbc10eb1f3ec8491c8c251d3523c5c4d7d46af553007c947bd089f19fd. 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/NOXUY2312010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd5f63bf9de97d263c7ddb32b062625a225409c3befe4f544c79656b8b37cf0. 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/NOXUY2311010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd5f63bf9de97d263c7ddb32b062625a225409c3befe4f544c79656b8b37cf0. 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/NOXUY2311010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8332203aefe5066ddd98b726f73216a1d125a735766b0d71cfca1cffc91f5c81. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/NOXUY2310010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95aea3a0f0d0cfba6acff82cb3e3dd90472c4223af23a8916bb0a9b3e0b570d. 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/NOXUY2309010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08bc93135b332aa725a439499ed4559ba2202bcdee63e262c4b871f0ddd0fc2. 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/NOXUY2303010.
38 Nøtter Til Askepott 2022 (Hjemmesnekk)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239b77bb91c04933f6ae2ef9799149880ef26bc618fb8c0f1a51fccd14591e55. 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/NOXUY2208010.