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 0xbfa59559d46ee140a423fee8d6a41367f947e3dcdf07bc787f3ac290d72374e4. 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/ec2ffc71-b177-47f4-900c-55aa78192c17.json and https://artists.proofprofile.net/proofs/artist/ec2ffc71-b177-47f4-900c-55aa78192c17.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 0xc61c3391b3154d8bc6c46aa09ca9509ae0423f6eab05392f247b75df67eff179. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEQ022280676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63af1fe0fa685c7b25a74fb20e9e060540020390e982d2db4253ae34623ebb03. 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/CH7812346274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0d15df20c968d27cbb7f8fd52cb1f24792b43b0a94a6762f271810059e0703. 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/CH7812356226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3138481e3fc2937fa2af2ad1d05063d565a123472d35e342aca3870f6749e8. 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/CH7812357699.
Back in the Days (Melodiesinfonie Remix)
Back in the Days - Melodiesinfonie Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f70d38a543019b4704ac16eafed8642e7862bef929904215df3da5bc6c1b6a7. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/CH7812360358.
beats, rhymes & mr. scardanelli (Acoustic)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7035d23db2299b69b99b3b5cbe68e1d71c34056a8887001e316e5b5f792c234. 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/DELZ31700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b25e48299db5d4b7972175572a4182ed5d6af40551a40dce70f3b60497dd88e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DELZ31700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac0c3444daee1832e5341968bb5828b1327de731b19be7565b5306de617a6ce. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DELZ31700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a154dc7c8087dc7cd5e5d76fb91a8782eb9c74daf118b5e081f6d15882bc4da. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DELZ31700004.
Hey Du (Nimm Dir Zeit) [Acoustic] - Jay Dilla Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8308d09560ecd1091d61543b6ea0b4d5dd20df39a284e2155aa4789f2ef7187b. 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/DELZ31700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd334d68f90ca51c85c2cbfe0b647c7e17fee70752b9e334b49ec24217dc79d0. 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/DELZ31700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d1ed2107e9742b172e2b8557fdc5d47e4a1396745f8f33260a81ff558b4997. 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/DELZ31700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb060ad85e91dd30630ae0b7e9033293805151acab82b693753bacbbfc1248e32. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/DELZ31700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ff914a02502239b113862916e675efde2682ebac68691841f998bb4661f61b. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/DELZ31700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d684f65958580d8bd99eb5abd7bc1ace199408996c15627eecd8c23dd2188d5. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DELZ31700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3355cf128e36959a76d82134e227dc4d119e36859c768fc1b828e60ad33d5897. 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/DELZ31700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499d1ebabca7326a7bbaded254360975841fcc01c5048fd10d00fb0465196b1c. 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/DELZ31700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3904043cc2da81ffae2dfe3121b773d698e2d48985c3e2835768628c0ec4ed. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/DELZ31700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14101ff7c0d71435e3362b02371b52120e7419b6dec0f3307f3e0447b876eb58. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/DELZ31700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6804d8c1624a0e1e51f68da38e823f2c1959098fe316ffd3bf72889e3738ba6d. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/DELZ31700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998c75f35017f67a6d457058a02b9c53ca89c44d43e7b542bcf8f13526ee8919. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/DELZ31700016.