thumb|right|200px|Juventino Rosas 1894 José Juventino Policarpo Rosas Cadenas (25 January 18689 July 1894) was a Mexican composer and violinist, known worldwide for the waltz "Sobre las olas" ("Over t
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 0xcfd6223544a861fcf4728bcc28df5dab654fa3c61b6833af18942b6ddc16aa44. 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/9f28cf7b-29d3-4813-b9d0-d3e91386cb8d.json and https://artists.proofprofile.net/proofs/artist/9f28cf7b-29d3-4813-b9d0-d3e91386cb8d.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 0xd0f20fa591d2287c6e6ee015e5472de06a9d6c40f4ca33710042e9bfb568c5e3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEUM70501659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2442628249e48f1d70fcf9361ac0d8e50ce04000470462d984565744d4446525. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLA309600301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75245e6a99443d5cb860c3a100a5f9cf4652529bc394b914058fe7034802939. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEUM70805625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf45e4e0714e2f28520e560fb0e4c29a1bef0fd8af85f0ce9eb347abb77567f. 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/NLA309500265.
Juventino Rosas - Sobre las Olas (Über den Wellen) [Piano Cover]
Don Porfirio: La Musica de Su Tiempo (Acordeón Clásico)
Música Mexicana de Salón Con Salterio: Finales del Siglo Xix y Principios del Siglo Xx
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e61ec084be58aa02de0be5f205d16cfda43fd8b0e17024c62fed17a8cad413d. 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/MX2831301976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff5cc8c8ddaf5931125c48f6db82d464704415d129df283d82e9b650bf67721. 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/CH6541955513.
101 Classics - The Best Loved Classical Melodies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4801156af691826b0bdb47f6838b614a824d77ec256968842a2c9d042a231c7. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JPTO08754110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107748686d6839e360bb6fb38a10b098c406303352111a7dbe4ceb3c5de4678c. 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/HKI199263004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a711c9d43a21c608e189dba1ac1963b181bd96f12fa5c3a20e709264416f8d4. 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/HKI199263007.
Orchestral Suite No. 2 in B Minor, BWV 1067: Minuet and Badinerie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e1cec6697bc68c0f103bd4108d3df7a164452e0c613764345ec52352428b0f. 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/USBC17500222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ed0ce63e33d5dd3d84f1c3eeee99d9b0b4da4e039fe673ee684d65ddd54026. 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/DEUM71503306.
Ich mag keine Klassik, aber das gefällt mir! Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d13837a6de6f7cd9d8aa8b5bcdbef0b8de2fc2528db5e6bd2e66555aeb5295f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USSM11000992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65cd4f47da385f77298b0ccb5c189492e5b7781d3ded7f508c91385d5c698b5d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USSM11001001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572fb5cfc75df524815cc323cb17159ccab76ce7513658741ea1cf8b7510cb79. 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/SEWDL0501814.
The Impossible Dream (Arr. by Tom Rainey)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73517a07d58e54b5fad1c0d7bcae95768cc8d01b14e4b9f6d0dd3222a89a5799. 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/GB5KW1903117.
Make Me a Channel of Your Peace (Arr. by Simon Lole)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6ea02470e5f6e3426a5c6f219bb52cd0459721abe3a9fad1561f07fe001a32. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GB5KW1903120.
Robert Stolz Conducts Waltzes, Marches & Polkas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f8e67ccfbf1dba281bf8e90e955335b6aa87426df5f7995bb87a2c28e1e6610. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEB638905228.
We'll Meet Again - Songs For V.E. Day Heroes
When You Wish Upon A Star - From "Pinocchio" / 2017 Version
The City of Prague Philharmonic Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75aa90d72f76760583e32567ae60ffbf0b48a087bd27c32e4a054784aac948bb. 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/GBUM71700238.
Strauss Ii / Lehar / Tchaikovsky: Great Waltzes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496eaea3261c9106dd0dbfc5243fdde2304de252e2f6f6f6dae781088a61bf95. 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/DEUM71001510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f964117bd90b4a7c304c1ddfae83d054708d704ce7e4e0a52f97084786d2e65. 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/DEUM71001512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539214fc281b6b7bff700a34c59c62be4f98f0fd0e485206fba7c672b25633ac. 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/DEUM71001513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d37f72b2b748800cf7872cab3dbe3a9ea13b51fbd4543965c53d8dd3ad4555. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEUM71001517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9037fd4f12411d2a7826dd0932c1840f43b62ab818b59d10521b36cc11f5e6. 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/DEUM71017181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabfa5cd4a37afad1f0aada39d4c008c41ad94768ad81ce9a91b4ab6047486541. 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/DEUM70805623.
The Sleeping Beauty, Op. 66, Act I: Waltz
Slovak State Philharmonic Orchestra, Kosice
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3ee9d2dec864041cc934f599c09610df229e1b419cb0534d8d20d6e5534bce. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/HKI199245301.
Gold Und Silber (Gold And Silver), Op. 79
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96246f00af24170685e057cefac7d0360406e0c954b50de2b458891dd8e5467. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HKI199245304.
Serenade For Strings In C Major, Op. 48: II. Moderato, Tempo Di Valse
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c636ddeeceffe52a099970f15df6c806e19734bc17accf75340140ad32af1b. 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/HKI199245305.
Symphonie Fantastique, Op. 14: Ii. Un Bal (The Ball)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d9feba456bc3bb02fadc9bc47afaa5f9948ac74d6a5b6a319567bac27a5000. 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/HKI199245307.
Masquerade Suite: Maskarad (Masquerade): I. Waltz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9295c4a4e9ced41dd712b359806ecc2d144db634603969003824b2a33c1f7efc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HKI199245309.
México a Través de Su Música (Valses Mexicanos)
Orquesta Filarmónica de la Ciudad de México
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1bfc1e80b8fc3ac05362a292cea970172215ba607599b523bc54488e057f819. 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/QZ7361803343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd289c5ede29918895adf9122cf9c0bf04ae411176fe6e29638665f2ded6bae45. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZ7361803344.
We'll Meet Again, The Very Best Of Vera Lynn
Sailors, Soldiers & Airmen of Her Majesty's Forces
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d8ed722e9b8abc237e5e8d120478d3bd180df8410fcb536a00c95007ac8f38. 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/GBF075220090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392410e029ebf23a8fc422e0ab926378f41f8a2e4f984cfebebac744aeccc68d. 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/GBF075621280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1294d9f8bd63cde6c1f4d3ffc5cdc061dad43e0c3533526a3716cf8ffbf065e8. 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/NLA309500257.
Barcarole - From The Opera "Les Contes D’Hoffmann"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9d77ae9fd9a82de60e801c92c2953b20966220283718bab38589a87b54d5a8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLA309500260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ada668ba18fc7399231be5df8412c2ea2990ec47db8cb4d51781e4f913dc02. 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/NLA309500263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5656b328d3464c41e1e79455b6b68c55055751d84ab17086ecfaad50e569b45d. 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/USHM82126885.
Contemporaries of the Strauss Family, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4929c44d395d84f7776c5d7dc2b9451ee8d389d99475d616fd70c716e31eb08c. 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/HKI191420010.