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 0xaa092de65ac1881ceba900d68f3d9811a8fe9f1c9a7d31d97aedc01e861b1fc1. 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/c0268d20-b2a5-4e47-87f9-87d4bc10a458.json and https://artists.proofprofile.net/proofs/artist/c0268d20-b2a5-4e47-87f9-87d4bc10a458.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1ceeab54fa215147eeba8a2d088a28e3950b334ed7c41e43cf2367afc8e2be. 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/DEQR42302042.
Somebody Dance with Me (feat. Asja and SKI) - Paul Kold Remix
Somebody Dance with Me (feat. Asja and SKI) [Paul Kold Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2524df5a9c691299995e564cdfe6abb9321ae1850fdb74c6ada667a0b3177afd. 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/DEQR41901352.
Never Gonna Give You Up (feat. Mike Singer)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc3052477dd061e0932a25fb31e8856893579755a57490291921e759be6d481. 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/DEQR42101759.
10 Years of Sea&Sand - Welcome to Kühlungsborn (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd53065b411086fac4be876af6575b6a2160c205b8192c68af87b948a4aa0774. 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/DEQR41700817.
Smalltown Boy (feat. Ronan Keating) - Classical 80s Dance Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5445e37a81a0de51aa8ad477b6e6680677e3ff0fe533b21fb1014c76d1b4fb44. 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/DEQR42101757.
Don't Dream It's Over (feat. Gary Barlow)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ccc00d6cbfe3864bbe4da60bd48fc042c472ab42abe21753e21909f6c18914. 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/DEQR42101761.
Another Day In Paradise (feat. Glasperlenspiel)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c88b8048b30640ec202da19ee6c04680df2c425a9ac9ca177b1ec78ee8d4a5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEQR42101762.
Blue Monday (feat. Felix Räuber (Ex-Polarkreis 18))
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa114db28dd81e0d44e957b5ab1c8aba84ca323e2ff31b4e49998fda986ebb635. 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/DEQR42101764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625fb4f76bf1960bf34ce9d352d8fef48649812d49fb8ea9eb689dcd73b1d803. 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/DEQR42101768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec08cdffa9bc2897e5ef911632d36fb5f7331b424e82c5de3d0e20dea1739295. 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/DEQR42101769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee90f9479305a4bcc1dfc55d9c5afdf54a9f03a74f468de10e22bf04cebe3a1. 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/DEQR42101770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a847a913492b372783e0ab03dc730a7858cfb0d858152f4e0ef6a23d22044b6. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/DEQR42302050.
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