Berdien Steunenberg, known professionally as Berdien Stenberg (born 30 July 1957) is a Dutch flautist who was active in the 1980s and 90s. Her recordings were have been successful internationally, lea
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 0x96e829b63af0a0da115109ef1f223a22eb5da5c241496a9f08cc9765ace1a8b1. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6c4da59d-00b4-457e-b269-642b5e93af6d.json and https://artists.proofprofile.net/proofs/artist/6c4da59d-00b4-457e-b269-642b5e93af6d.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 0x9f630bbb67d9a414b15aefba63a9fa8ec50b90894c266d1ef6f02d4e0de643c1. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NLA308300036.
Anitra's Dance (From Peer Gynt Suite No. 1 Op. 46)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76071922e38f5a0edcaf47f7b40fac3ca03150324cd1bbea1b1cb7cdf4897631. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NLA308300037.
Allegro (From Trumpet Concerto In E Flat)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00cf36183478bdab98f2b39c26b233ca3b3bdb3022dd49c2bc71bf29edc17e6b. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/NLA308300102.
Morning Mood (From Peer Gynt Suite No. 1 Op. 46)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327258f97d07f22fbb76d1f82819303812ca88f6db1355940a7dead747f40453. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/NLA300400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c7968319a0271e99a3e0cbf54b4887a5e9cd2f6b0f022aeaba1706be2104a6. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/NLA308300101.
Vivace (Rondo From Eine Kleine Nachtmusik)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe134af28290db40d86463ee34f5b1f2f9b0c28fde8157e202b75a9c05bf2d465. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/NLA308400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3a1e7d7476ea3f15d7353eee255eff8ac15a7b993cd7750f9751d71c890a6d. 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/NLA308400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20acd7d360b499e7eba3fc949952c1a0460557c32483a89b420e6d7d41fcddb. 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/NLA308400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6001e1ac29baa83cc00e3e2a2287afaea1b03d7798e14b24d4131b9c45fac29d. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:16:57Z), 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/NLA308500021.
Joy To The World, Come All Ye Faithfull, Hear The Herald Angels Sing, Jingle Bells
Joy To The World - Come All Ye Faithfull - Hear The Herald Angels Sing - Jingle Bells
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8de04cf3429c11cdc72dd6f4c31a2a4653fc77d4d94f9a52e599a0aa163378. 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/DEF068804140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f202f41092849824564370e6aef23b1546f9b48faadfa3ee3f03176d053b19. 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/DEF068804160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b161dba8b5f08cfdc48a30e44b54b2f597ed9e42ba7b1e831e433abd7010556. 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/DEF068804200.
Jerusalem, Jerusalem (Yerushalayim Shel Zahav)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4114679849eeda85c858c983c22f5ead47e54c39bc118509e29b582eabf85f9. 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/DEF068804210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25a8db8126284c20f646ed81bc237cedea76d735d6d3ef5ae7d69754c1e5309. 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/DEF068804220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc79875d95846778eacbd20a31b309d5c8864d77f29d59813f90444f44880f2. 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/DEF068804230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567e397fd30a8e2a0dd66a58e30b93e98db2a27057e825d2780d9a527fc4aa3a. 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/DEF068804250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0912baca218198f4d5476dc8aa6ee658b196bade9c650a266551a236ea16003c. 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/DEF068804260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee95842a9e1b607e5f1abcc9655f1536cc6b4f1f3efc8ac022059f4fcc5d829e. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/DEF068804150.
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 0x82143b37f9a5e54eb362c8cfb6da13444870be28398e53ede3c993da69bd8f9c. 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/DEF068804170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066d56b78a67a491350befaae6c823e25e901c4dcbb834f011389b364ff02ab0. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/DEF068804180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512e25369662cea07d5b49f9d23ff7eb985ef7d7e0a37433c2fd3dda51a08d41. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/DEF068804190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5356f299d49723dd54c8b7a547d6e8729d360c407bfda7071cb3d96b2530400. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/DEF068804240.