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 0x2c961c4b3f6be6778fb56d349f3368c0696831ba176ee8bb81e5e2a51fc819a9. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a1f7b639-a3cf-4d2b-aaca-ef3dde8757d2.json and https://artists.proofprofile.net/proofs/artist/a1f7b639-a3cf-4d2b-aaca-ef3dde8757d2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Golden Age of Light Music: Amor, Amor: Music for Romance
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 0x21bdc22355d563119d9be2c250ae3e11c16cdb50f031fc4d0cd780ecc85fdeec. 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/CH6630753301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da71e3489eb40656fb11949e73b73e461b8e3c3bb7ca3c65ed03d4766b1dcbb. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/CH6630753304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ae52a8827b718193fa909353a461024164727bf685a9eeb92e5ca06cf7f0e5. 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/CH6630753308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3844a01ca6a95fa50cf0c5644823fbd00e9bcb5b95e410dc1cbea5e95f37c38d. 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/CH6630753309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4c7ca8e9b9604046fb37e72c26be9013860432e7c704d9cfcdca4466e15234. 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/CH6630753310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37dbd0434b80f17643c97feb94f4d9b46cc2eee8b928c69e3f6d04f050aefdf. 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/CH6630753312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49b8eca892017137c09f43f901d7f6ccda6ef80c37f3ab3b562a7c5ecbe6aec. 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/CH6630753313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df5539f8ebe84683233b8f0cb59eb631987163ca6b56f9d9a1c4e70a421c7e3. 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/CH6630753314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a3d66e73dce94970fff5d8b97db318f21c809a86f4d58cfb6cfcee54c37e7e. 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/CH6630753315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36437a6c5e3d01a4861afe6e19bd74a036b639451cc71940dd5ad360f027f3a1. 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/CH6630753317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b440a08b9e80a0638c7cc0bb0718ff1859c458cc459aa61dd39a3c192776fa. 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/CH6630753319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4939d733b1a5d936ee8bda1c106f7e62ebeafc8a0e5707d24d7c98085c3fe0a5. 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/CH6630753320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56bbb3455f4a7d1f2166f1fe65d81e88d505ec8a6145c4cb7472c0d2b2d68e2. 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/CH6630753323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5b469e2d4259928e0271435820fd5712202ec8729ec1b408f8cfde58712a93. 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/DEF060000990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48db1e8daa2065dc2be59853a49f152d0cd758852657a088069211772b017475. 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/DEF066415660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7555d57b8ca599835636faec206ca673d5d574d549a77f7f94a56c76585b23. 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/DEF065910110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9c0038a3051f6b824bca81730a647997356374b8c5cf76cdd768cd206e751c. 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/DEF066415179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a0ebe3b4639fb517888bb308be5dd01dfa437ad074c5c533e168c2977ef0ef. 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/DEN120208193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5670ed30f08ed9fb23973f60ec86e93d074982d5e82bc44412035854fda127d1. 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/DEF066415730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1909ce59a931fbc4ec83299969f4690747c27a5f0ce55ef61edfab5d6a636c4. 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/DEF066415690.
Das Marchen Unserer Liebe (San Marco Glocken)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647caf6c5332cd6e27d8122cf68aac8fa74e3cf1ab7ecd75fac5365733570607. 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/DEF066415710.
Edition Berliner Tanzorchester: Werner Müller & RIAS Tanzorchester, 1950-1957
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28fb695c4dc852f958a62bf353852ae18340edbd17a5c97db3cec256af27ff4. 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/DEL112500616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44876413ea3682ef93df706ae9a51ebd2c28577d2fb95ec985f240cb9a991055. 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/DEL112500619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b58ae05091bc543bab56f96de6ea60a90ee5616377e9577d7449b63b71a9a2. 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/DEL112500620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca58d77a5ec393a2b61504f54394732c4c9d6fb627599dce5c1f129e9cca3866. 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/DEL112500625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc246ae5949e2f36fd96fe81a62daa30ea3673e5dd64728b4a5e7edcce365cd81. 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/DEL112500626.
Liebe und Musik "Music, Maestro, Please!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0870602b6957c88dbfbe31565908b8bfcb162d62799d9b933a8787728326ad47. 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/DEL112500627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d3fad59c4a1faaaa1a93fcb00949bc4eb5b98b56b93f106747e727b0c8ab14f. 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/DEL112500629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e9f85ca0aa4d521ce3a4dbd0318147c4acffa308cfff0d563a003c3c25fda9. 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/DEL112500631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfded6d5b8538de8559cd04e32cf972ec8a430d97f0dc68afe7418bef507319e9. 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/DEL112500633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b73002d393bd83af851c7e61e6f3e43503ef37c914ea82fd34dc201984be268. 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/DEL112500634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1d752c2072a83d5dc54e4fee0dc0823d68d6839aaaf44e6717c6833950ac85. 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/DEL112500638.
The Dinner Party, Vol. 10 - Smooth Sounds for Elegant Evenings
Legendäre deutsche Tanzorchester - Sport und Musik
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7139ce59d15c171479b1a07c3f82c1e9229e74e733e2dc6187ebf97830b6df61. 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/NLHR52110816.
Soothing Melodies of Werner Müller, Vol. 3
Soothing Melodies of Werner Müller, Vol. 2
Soothing Melodies of Werner Müller, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79b9fb93e7518316729451e5eed8b265c145e7e327cbeeae53c49d755bf7caa. 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/DEA311407225.
Caterina Latin Album (Caterina In Japan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76a9d9d7a6fe3cd9c770fa8c0d2a0c0c046a58e7c3b07c5a6bf3c1ebd92ac6a. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/DEB551041838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a15f59802d3af77d8a4b198cee289d1071458e57a7cab6f18341c70affb934. 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/DEB551051836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1303b4278d3e42a51f5fe6a1bbc5b91d3b1e7db65693ba5aec2ec0ffd87e31e8. 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/DEB551051839.
Serenade No. 10 in B-Flat Major, K. 361 "Gran Partita": VII. Rondo. Molto allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2543fab815acd34030d22b0ba6708decb28aa30e40d9a564295070573dae01b4. 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/DEA580600852.