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 0xa9f8c28624d568562217c9578e846d41106b588b26f2af41f4bf5e53046f9552. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6d1b5548-2d2c-4267-a3d7-d5e1ddf1d705.json and https://artists.proofprofile.net/proofs/artist/6d1b5548-2d2c-4267-a3d7-d5e1ddf1d705.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 0xad6f9f772c005f81269b37ce3eaab2987b4b7c0f509681218c82c078f73e5352. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/NOX9X3732611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e78aa40ce3250860c2e62e3f79f0833f452920c8cf301519165fa179e7615b3. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/NOFCT9522010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b07297079da5a9d5b01d26f9f68ef5edd74eacc85661da7967a2498a46956f. 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/NOFCT9522020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc924e410ab372d51184093e82082bb4f2cc9028710f5a39a30f897cf938cdabb. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/NOFCT9522030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dec34cbe40059eecad3bc6a55eb1ae6683d8bb9db9c4d13cd1007fc7ad2e314. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/NOFCT9522040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21aa0f0145f58712ee09f79e17aca8228d9237ddf9f4e55dffad05e9a21d8e9. 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/NOFCT9522050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a34fbd02d83ab0825111dfdbed6b3242125e7e0ddde7209a06b66739adb353. 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/NOFCT9522060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d160d2ee48d2c5089c5ff8441a7a3acaa1289d58aa0f8438f984578f732ed5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NOFCT9522070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e85b475804de73050076698f176428675a152fd09fb7bef54012174cc3d7803. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NOFCT9522090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde904af5d1bffb0e0b453fbec647833d39b77610544ce23192baedf72b9fa86. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/NOFCT9522110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6fbe206d4643cdb94e096ea3e6953336e07e395a835f53961d0ae6cd16a17b2. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/NOFCT9522130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb7c4feba78e401f94f5cb362f09c5b4c544cf5610daa6a494769171de7b65c. 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/NOFCT9522140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9703c71a06482bf33877563c434ec649682a5a579a9883980ac8a42f0327c78. 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/NOFCT9522150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b7560afac5c6bf4db3635a05e32db9ccc9e575a92f13858cf9bd6e3c13ed72. 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/NOFCT9522160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba1ec084fdd95e69a1a5f99cb78b4fbbc85e2103997c51dc4d82ea2ac414d83. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/NOFCA8702010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623217064f70c830cdda87c6d6d78546d38a7c2273b100d15a4bdac1afb62702. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/NOFCA8702020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275f48b4651a09c7b3ef98f99f938a9a299481daf0c62365fb24d97ab29157d8. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/NOFCA8702030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0231009ec8a1ea57c159f84e81bb8f628b74012e70c529ab7666c509c6acd24e. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/NOFCA8702040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf552e8b020ab66d449749122640bc7de0ec56a1dc4e8486a17670feb3943b3fd. 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/NOFCA8702050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93509fc9fc56924b170a47a1ae857a0d8d2c0eca3c8bf00af468ce9e9ae26fdb. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/NOFCA8702060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80bb3358304983858f1d10eddd5bb195519c3d83221ef768943b8d4d5284c11. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/NOFCA8702080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f91fcea6ce619fdec41bdea5ac45c7de0f6385649474af86100cb612cac898. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/NOFCA8702090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07280a74b90f19886a1dc0d8248938b95960a11fd7dc70b6fdf8ad3f89b0d0cc. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/NOFCA8702100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19089b2a3793fba0fa6b8607a4971f8a4c027475c3df7d8217cec1785c37f364. 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/NOFCA8702110.
Fante-Nils (Reinlender Etter Anton Tvinnereim/Bjarne Lien)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7980a5640b98032339c53becb3e4af3795eb255a081ebbac5f4611705ef4671f. 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/NOX9X3732401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5015ada81bc9758d5c4a0eed30cc197a824ba33ce9a8eb6beec3c497ccda57. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/NOX9X3732410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbfce5e8381d696c67b6a42280268fda1742de040c28b3acb3a4bdc40081325. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NOX9X3732420.
Hilsen Til Bygda - Greetings from Norway
Det var en gang - Fra Asbjørnsen & Moes eventyrlige verden