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 0xe1df600db57480497fac51a1a6345a1cfe679fb943094049e7624a975c7ac5b1. 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/b65137f9-7055-408c-8c5e-4ab2265c24e0.json and https://artists.proofprofile.net/proofs/artist/b65137f9-7055-408c-8c5e-4ab2265c24e0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Deux Arabesques, L. 66: No. 1 in E major, Andantino con moto (Sleep Version)
Deux Arabesques, L. 66: No. 1 in E major, Andantino con moto - Sleep Version
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 0x155433a4e1515011c51dd3b208b64b047b04353d3ce93ae590a5223145bc08a3. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:09:37Z), 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/GXBDT2514965.
Gymnopédie No. 1, Lent et douloureux (Sleep Version)
Gymnopédie No. 1, Lent et douloureux - Sleep Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46923b1136fad9459ac437e0ffbcca25d124455a2d661edf49df11021365d9c3. 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/GXBDT2529905.
Intermezzo in A major, Op. 118 No. 2 (Sleep Version)
Intermezzo in A major, Op. 118 No. 2 - Sleep Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98424abb525a77fc84ebc494babf57c20c05ce6d7ac4ae46b373015f667e40b. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:26:18Z), 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/GXBDT2546171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49d9d14fd0788f1d0216bd55b599edc52b435d875567705a53f0874851b252c. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:53:25Z), 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/GXBDT2576508.
Sonatine, M. 40: II. Mouvement de menuet (Sleep Version)
Sonatine, M. 40: II. Mouvement de menuet - Sleep Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebbbd5ea77663347306f0596fef17da61fdb6264b374f3e6ac79c0989430f758. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/GXBDT2501108.
8 Easy Pieces, Op. 43: I. Prelude (Sleep Version)
Music for Children, Op. 65: No. 12 The Moon Strolls in the Meadows (Sleep Version)
Music for Children, Op. 65: No. 12 The Moon Strolls in the Meadows - Sleep Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6f6055a0fddc6d90d1ee63ccf15661c856508259eaeb02f2f277e4d9ce1651. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GXBDT2565902.
Romanian Folk Dances, Sz. 56 (BB 68): IV. Buciumeana [Sleep Version]
Romanian Folk Dances, Sz. 56 (BB 68): IV. Buciumeana - Sleep Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b6652979cf4e3bb42573b01b9a1597668a439697a85698398b81e3f6773789. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:10:54Z), 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/GXBDT2560963.
5 Pieces for Piano, Op. 85: No. 1 Bellis (Sleep Version)
5 Pieces for Piano, Op. 85: No. 1 Bellis - Sleep Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa46e1b694fa105e8e054b723905104f6780fc51e97edaa8af3becf0e60c4771. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:19:43Z), 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/GXBDT2553929.
Piano Sonata No. 12 in F major, K. 332 (300k): II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6fbfcd304efbdc1de507f01707714cc87eae5d42f3ab55f2e59b63dbbdec59b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T22:10:00Z), 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/GXBDT2521821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a95cc8e78cbca4dda9063063746171c497cbbb03b763e699d08295baee0d8c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GXBDT2580852.
Deux Arabesques, L. 66: No. 1 in E major, Andantino con moto
Six German Dances, D. 820: No. 2 in A-flat major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3ab1738e2f164c7e5f3c50b7e332b98e0429e2b8a5f5cadd2a099ed1ebac5f. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/GXBDT2566210.
Lieder ohne Worte, Op. 85: No. 4 in D major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc205aa9c010b17d41129838734b08e508596c73560b24af1e5a7301036ddf5db. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/GXBDT2545771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2b8f08fe424218ac2e7d0ca39929f27ebeadc84e966cbef5be9d86c046b0be. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GXBDT2503154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f449c1cf7caa5c7714f0f90153535d45da7043c2bea30083f6a36415411b13. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GXBDT2599870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60839ed00a1b764eeca6370900a124c59518db16a27e571bbceaf8603198607f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GXBDT2590583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0164918d8e42cb88e84d5787154d4fd04e3cfd6d752169e7b586e06a5dee45b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GXBDT2500322.
Waldszenen, Op. 82: VII. Vogel als Prophet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd312049816846a1bdfc5003341a562aceb18e78ff7e665f7b28fa6d6c24438e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GXBDT2596314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724cc4f2ca9a07ef543816a36bcbc992603c28481e03b2f94f2756731a428f74. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GXBDT2533148.
Album for the Young, Op. 39: No. 21 Sweet Dream
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67cb64a2668970417d2e69963704c6c104e76e70cbec69f86b594bb4308c0e71. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GXBDT2542081.
Romanian Folk Dances, Sz. 56 (BB 68): IV. Buciumeana
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626571bc4a128c1c5c2a55adac56040999201c37473d977bef07123636907aef. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/GXBDT2534366.
Piano Sonata No. 27 in E minor, Op. 90: II.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426dfcea37a51ccffa959c10165054716b0f4bb2f75e0cb85299b56a08d4b4e1. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/GXBDT2570002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee845ae04ab2d7e94ffb0a3b0dba6a0d666b1be8a9bc8e401d6c9ad07111014e. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/GXBDT2541962.
Sonatine, M. 40: II. Mouvement de menuet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7396ff3f21b76090a16108418a11ff9f70603b00349708659f9879df03cef1a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:08:01Z), 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/GXBDT2537168.
5 Pieces for Piano, Op. 85: No. 1 Bellis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8a9a6ba40c463c2064b2806ad1283b39f7f68c321f9b24da0110290bdfdb18. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GXBDT2509122.
Vier Lieder für das Pianoforte, Op. 2 No. 1: Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106069506b6b27aeba8ca246c75418207f203a063b0f05a1252e43da973276e5. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GXBDT2501302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed71f2d6174b165cbfa3ffa5d184228971977d5470e565dbbd657c1b8a6cc54f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GXBDT2584709.
Sonata in A major, K. 208 (L. 238) [Sleep Version]
Sonata in A major, K. 208 (L. 238) - Sleep Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510e23f927e186d23e3358985c93f5a5b9f0eb79fc58f7592cb0f922b8a22e59. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/GXBDT2532694.
Music for Children, Op. 65: No. 12 The Moon Strolls in the Meadows
Les Barricades Mystérieuses (Sleep Version)
Les Barricades Mystérieuses - Sleep Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862b144e1dc2bca771e0d8fd9f4bf891867f484b570bfd941af33a3b28dd1965. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GXBDT2589744.
Piano Sonata No. 12 in F major, K. 332 (300k): II. Adagio [Sleep Version]
Invention No. 15 in B minor, BWV 786 (Sleep Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf5d39c428bbcf8f8881db720fd07cf3ba4ec9a682c0a61730fedbfec8a6682. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/GXBDT2530860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1224f44590faa53a7c653e46ee149ea8717348f456fcedd0cfd5c1e45b4aa2b1. 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/GXBDT2526487.
Vier Lieder für das Pianoforte, Op. 2 No. 1: Andante (Sleep Version)
Mazurka in F-sharp minor, Op. 6 No. 1 (Sleep Version)
Mazurka in F-sharp minor, Op. 6 No. 1 - Sleep Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb6567709061cc56bf0a0fcbaf2cb5371ddabe41ec1f4b1781d5a3f5c95c842. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GXBDT2529566.
Sleepless Night (Melody No. 17) [Sleep Version]
Sleepless Night (Melody No. 17) - Sleep Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad397050d14787abc61b7956024561a5bce5817c56e341ce8e3cb8624bba19d. 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/GXBDT2563630.
Six German Dances, D. 820: No. 2 in A-flat major (Sleep Version)
Six German Dances, D. 820: No. 2 in A-flat major - Sleep Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3701de63348c32d922461e0143d0683880d74067caacb1e30e8865668f7a6799. 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/GXBDT2505027.
Lieder ohne Worte, Op. 85: No. 4 in D major (Sleep Version)
Lieder ohne Worte, Op. 85: No. 4 in D major - Sleep Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0e79c45dbcb18ae81507751f1af036cf8056bbe65d637627ecab5dc2613e08. 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/GXBDT2532372.
Album for the Young, Op. 39: No. 21 Sweet Dream (Sleep Version)
Album for the Young, Op. 39: No. 21 Sweet Dream - Sleep Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce07c135584d1d27a1fff921112645bc4d81087f85d3333471edf1dae0984fe7. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GXBDT2590193.
Piano Sonata No. 27 in E minor, Op. 90: II. (Sleep Version)
Piano Sonata No. 27 in E minor, Op. 90: II. - Sleep Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d88c9f3a0962baa04137f1612b76346330d8c91ca8c76e928af2c5ab0c8001. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/GXBDT2548887.
Waldszenen, Op. 82: VII. Vogel als Prophet (Sleep Version)