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 0x6b9f173e951cbf84c731f3054e2fc86793df735b9df63bd1297e6647c9de3626. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2c9deb17-4aac-473e-92bc-59d505d18a47.json and https://artists.proofprofile.net/proofs/artist/2c9deb17-4aac-473e-92bc-59d505d18a47.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Two Elegiac Melodies, Op. 34: II. Last Spring
Royal Stockholm Philharmonic Orchestra Strings
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 0x0ae1941a0e90d0a74ae5de9af1f3fcc8ef6fae9a0547d4189f711b1a3e9ccfc6. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/SEAEL0081140.
Holberg Suite, Op. 40: Holberg Suite, Op. 40 (from Holberg's Time: Suite in the Olden Style): I. Prelude [Version for Strings]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d2a508298b9f7ddf545beef9bb0021aa1a2c4a85b242a27da91ea34fb9537e. 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/SEAEL0081010.
Underlige aftenlufte (Wondrous evening breezes): Wondrous Evening Air [arr. J. Andersen for string orchestra]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9380d7155796b0f67e4fbace05bd056365ef499e5532dcce71e14dcf23aaa2d2. 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/SEAEL0081020.
Dance of the Mosquitoes (Arr. H. Palmqvist)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c141805b0fbb5e21ab6320f24e3d1f99ef5b201ba349007266a9417b9d6365. 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/SEAEL0081030.
Serenade for String Orchestra, Op. 11: Serenade for Strings, Op. 11: Alla marcia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3240f21ae7acd63d8d958f62106cf53592374fbd2154e6a712b54559a7a4e261. 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/SEAEL0081080.
Folksong from Varmland (Arr. H. Palmqvist)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd59c9a84c72c5e8c18ebcb2bd8d0238b6e28752384089dd03cd66f134fa0271. 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/SEAEL0081100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e9ad630e3511cf79a9584421d0f90115d0b0bfdf0a675b165bfe9d0b18582f. 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/SEAEL0081120.
Peer Gynt Suite No. 1, Op. 46: II. Death of Aase
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f0e06988797c6ad505e505619b5c03acb1398565e8d78c246c1942604c5b43. 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/SEAEL0081160.
2 Melodies, Op. 53: Two Melodies, Op. 53: II. The First Meeting (Version for orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc698f4ef9ae6eaa0e14b5175061a0429d4413254e59419ae653662663cbc550. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/SEAEL0081040.
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
Peer Gynt Suite No. 1, Op. 46: III. Anitra's Dance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9fc9e23490742ce9a6a6880f7db971869f0d1a0d7334765b247692de4bc463. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/SEAEL0081050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0a2761eb31e57039753ee0e4b2311709e7d751de9c9a6bc3b0466dffe12c79. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/SEAEL0081070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb301162f3d62d0732666b6a93524d7ed771aa95b174591677d0858292a21ca57. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/SEAEL0081090.
3 Folkliga valser (3 Folk Waltzes): Three Folk Waltzes: Folk Waltz No. 2 [arr. J. Johansson]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a8c7dbe024df253f851fb21bfcc7553cf5abb2a31b01483848d01b267f5745. 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/SEAEL0081110.
5 Christmas Songs, Op. 1, No. 4. Giv mig ej glans, ej guld, ej prakt (Give me no splendour, gold or pomp): Give Me No Splendor, Gold or Pomp, Op. 1, No. 4 [arr. M. Ericsson for string orchest
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37a5652b04a9bb7bc78cf23197e1a8b7a95e751b87d20f2a0597cfbd80ffb1c. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/SEAEL0081130.
Little Suite for Strings, Op. 1, FS 6: Little Suite for Strings in A Minor, Op. 1: Intermezzo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5acf23443153821f4f1266191f571cc0c24a867a1ede3fe122854162c78db0a1. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/SEAEL0081150.