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 0x973a00b3a75cd2c241f33f62897f043c11bddf83ce661d8005e82bf166547e0f. 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/e5a34229-dc5a-49dd-bddf-177078b9a693.json and https://artists.proofprofile.net/proofs/artist/e5a34229-dc5a-49dd-bddf-177078b9a693.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 0x1377cd51640fe76a166628d37ff27932b8e8ce85905039826a0d7b41d0dfcbc2. 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/DKUM72000379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c9d3eb888b78dc9f1516c70033edd9a34d7ccb51da7ea7d3c7282326033a54. 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/DKUM72000380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b964244de4d79a7920cdfed4b57624280f1f8c7d6a65e408ef0d1649c313af9. 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/DKUM72000387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d75916589d16e5de5ecc9302df7997b5e687a31f285be209b65448a92f32d8f. 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/DKUM72000388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5baffe0ba0281a9a4a089124f7da018787be4cf66c1787f6749bc02f430483c8. 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/DKUM72000389.
En Ubåd Der Er Gul - Yellow Submarine (Dansk)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5e6424ae9701fcc569efc35ce08bf9dbbdcf70484e4b00bd93ad8cc6653d4c. 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/DKUM72000375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae10e5c409c061a096b283a58ac59af7d98ae406a93cec8cf386798571c72cc5. 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/DKUM72000390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c03227df36cddf10b06ca77d03954e475d6ac83532a2edb9973c03f42d112d. 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/DKUM72000391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8f39d8fa90a1d787b6372a3b8f069c7645e98dbb6fe5ceefee621bc0b56cb3. 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/DKUM72000392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2fe7169690f4fcd293ee8ef19f8eb251c291516baafb6563ca1470832ce5b9f. 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/DKUM72000393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd111ff9e73355463595c36c76860d3fca0d35200b14f843d941b46c05495f4. 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/DKUM72000395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257519ec25c69af45790a28f990906657a19f08bdc75d0ebd6caea4f5c816b89. 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/DKUM72000396.
Lille Peter Edderkop Og Andre Kendte Børnesange Med Dyr
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff4f8ade0280b2fc58e74b37b172dd3a80a5b37bb4b437efd3958f6272c5e4f. 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/DKUM72000080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326d1f2b36903bf4bfdaddcf391271d0eead8d12c402872bf494ade484ee2a70. 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/DKUM72000087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ee923520f13eb2b7c309e14840ce963da125204c8ec705ca6daef22f041036. 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/DKUM72000090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0ef8742a16f66eded30e070c5e7401587fc60f36d579765134f8661b6c44bf. 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/DKUM72000088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16434eac290bbd7b5f65f1c01228bbd81b69e8f9fdba7307551360da8d46fddc. 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/DKUM72000082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7a7bf403a153a0187dfc35158fa08b0aa75a572ce3f94cacc16d22538d9054. 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/DKUM72000083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2970c62a485165b710fc902f78782cfd9970bb0ff74fea0cba46ae0ada520478. 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/DKUM72000091.
Skovsangen – Vil Du Med En Tur I Skoven?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca0b5a755f806789140a56c236ab7a8372d39e3ae10863b16cad1e8b13e87a1. 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/DKUM72000084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61caf7e4988bf33ff36aa50304b79149ac7cc5920ef5cc1c21abb96f4bda9922. 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/DKUM72000093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac61bb563e1779b2b6f47f88084715b6a9a2d9db314a67c3d4a49350e5c7c8cd. 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/DKUM72000085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4309902cb11e5fc3e5af4d63c3c690a49794aca1f08815d8cb5f681c614c592f. 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/DKUM72000086.
Julemusik Til Børn - Populære Danske Børnesange Til Jul
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e52a4722d04977c45db0160762ba29432e4ea70d14a8a987f05eb61cad2589. 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/DKUM71900455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6642afeac75ab62d524b7a2ae0910eb76ddba38771fbf35aebf027efe0b3c5. 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/DKUM71900456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee837cd3c7456b1722fea4a9a59fbf4ccf76c63a9d99e482376125c734d5ed4. 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/DKUM71900454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c5da709ede1b20a668b3cc3c4e99c3d4cf8b1a06011a31c2c25b301fc02695. 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/DKUM71900457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19881d62f9d63fa5cf9bc96bbb284b16ba1373c3357e2258d389c89c7d9b4a1. 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/DKUM71900447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46cbeebf4c226d698dc459cb33b35e969752b73b7a15bd5963b5011e68e1a94e. 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/DKUM71900448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f93a6e29f292f5e590adbabe13e477d81b9d17cac026ec96446c9965655317. 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/DKUM71900452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d74bcfe84a2416cc9cc48a0fcbddaaed49374454dd16c1017f4528ca686c9c5. 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/DKUM71900446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e7b8e5722473bd9c8ccd46d007c22eaa432eda1062c6e193e195ea3f0f5d2e. 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/DKUM71900453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0961b1b88e8ccb9c8f8ddcfd11bedcf9ec53eaaa3c0986232359d812dc8140. 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/DKUM71900449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba42a916d5977fbe730d3e9c9d8cd2da8dbbb6b9a6f713706606516cff8f151c. 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/DKUM71900450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1704cbdc141d00e818a42278e2362efdfa89ff44319d7ee77cec339000c435cf. 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/DKUM71900451.