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 0xd8077c39a4eb4ae4da88a928977b27778c08aa9595a38de7f4cb4ac437745103. 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/03545ba9-7492-470f-9be6-b724ff94d371.json and https://artists.proofprofile.net/proofs/artist/03545ba9-7492-470f-9be6-b724ff94d371.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Die schönsten Weihnachtslieder zum Mitsingen, deutsch, französisch und italienisch
Wiener Blut - Maske in Blau - Die Dollarprinzessin
Wiener Blut (operetta): Einleitung - Wiener Blut
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 0x4fa731669bbb5f78f63f9df090fcc436bff7578f969fd5bffdb01a92ca6f5cff. 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/DEF066411640.
Wiener Blut (operetta): Drauss' in Hietzing
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735e4544b106af0bb8cd423b075d33b2f08b5718b9127bc6c640ff417b608d61. 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/DEF066421890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77cd8fd1bdc5d867771bee10ab83a8be804d48912831e82ac19edb681f8e2568. 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/DEF066421910.
Wiener Blut (operetta): Geht's und verkauft mein G'wand
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15afda4207ee59e500eee6cb6d953720bb22e85b1feefe2cd5ce45c2c65efc92. 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/DEF066421920.
Wiener Blut (operetta): Du süßes Zuckertäuberl
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918dde59f22c80d4d98a05d0201e2c6f926d7bcb9d1664267c6907a56e1dacf8. 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/DEF066411720.
Wiener Blut (operetta): Ich bitt' dich nicht
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60145d3c7201969da12004faff66a648362800568c1ac6ec8aacd30fd1a7cdb. 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/DEF066411740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419d8d6918f12c99da55517fddd41bb958b284a4b4f3991007cf9f8d24e130f8. 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/DEF066411750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d1bbc7a44b5b351c3cbd63f05e6577c0e050c00de53ff82437dacec3f4f2d1. 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/DEF066422310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93c70145be3df62c78530387545a7e9956861bc4084ccab4acaf596a0dcf68a. 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/DEF066407340.
Maske in Blau: Schau einer schöne Frau nicht zu tief in die Augen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4266ddd091ec6c2a82d1b262a3eeacdee1872e0a8f47eab77a24d1677f7919dd. 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/DEF066407370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1c9e7a65424cd2e22081a5de934ef043194c7b6f7f2f37abf7057fb3da42a5. 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/DEF066407400.
Die Dollarprinzessin: Wir tanzen Ringelreih'n
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd636421fc3e7cb327a2afd830ed6581d65e2a59d58bc1ae02fae5e6e2d13510a. 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/DEF066617330.
Die Dollarprinzessin: Das sind die Dollarprinzessen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aaf328d27e58552bda90b4dada8ca1841526a101675e1789768e525ab01f29d. 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/DEF066617380.
Wiener Blut (operetta): Die Wienerstadt, sie hat ein Symbol
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04e072fa319088483c38d0ca1c6eea5efc9c43eba718a4dd0ef0eb7485f879c. 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/DEF066411650.
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
Wiener Blut (operetta): Was nützt der gute Vorsatz mir?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168302223fe2c4b7c21158d1ba42c655fa43480e42eb32ebde7b50082b7c5232. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/DEF066421900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8660b6f072569e0c608e4e9f73725b55839eec1a92654747f2a3807e552b0ec9. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/DEF066411680.
Wiener Blut (operetta): Grüß dich Gott, du liebes Nesterl
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e9e4c97ac3bc38b25dcb323af1d3f7fb2639019321a9487db439eb2410ffdf. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/DEF066421930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb94aec0f8005f7651c43ebda1548a59f19e6e03e9db26b4580a62ae4a8c2fd. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DEF066413100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0f79f0df218779c17f02f83560c3963898bbdb527f276d8ee46d35b7f815d2. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEF066413110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4e88d2664e761bd5b790841fd491b1d4f7a94b24010ef11ef1d5a36993e725. 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/DEF066407330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8d10bd467852bf7f69a757150538bc168d39bab2c91c7b3155bd058072075a. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/DEF066407360.
Maske in Blau: In dir hab' ich mein Glück gefunden
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3726daa66b600df06dcf60ba4ad9ebca88dd2f1d2b8845bc1d0ff22a48c29111. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/DEF066407380.
Die Dollarprinzessin: Einleitung - O Fortuna, pump mir Geld
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486d7ae0e3991ab5b266a006127470a940664fa45ea98447d5df1d323f8f2588. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/DEF066617280.