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 0xdfb1afd9c974fc08c97e71a6c07d1db0a177d39beb2ddcf32597f7e4cb50fd05. 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/2b514e56-b18b-4772-98f5-f728e9519b37.json and https://artists.proofprofile.net/proofs/artist/2b514e56-b18b-4772-98f5-f728e9519b37.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 0xfe22ef1758a7c9c79d2396aae7936f76f312e3e47d5bd2e7e2ce88966888da88. 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/PLF241906112.
Bez sentymentu (feat. Lukasyno, Nizioł, Janusz Laskowski)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb4f490fa5f9aaedb6c49bf8a69c4b2c1a9bcd4b796e9aa43d220b8a73c268d. 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/PLF241704808.
Bez smutku na twarzy (feat. Dudek P56, Kaczy, Żary JLB)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f2aa19aa4991d7bbc9a2521b1b63c40e5da5971d2c6561d3e3baae6c259a9b. 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/PLF241906114.
Bez kitu (feat. Paluch, Bilon, Lukasyno, Fidżi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec983f7b1b60f9b665dd50186f62108443d5bfe7f7c4b408faab9c1a22977abb. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/PLF241906116.
Bez pomysłu na siebie (feat. Bas Tajpan, Junior Stress)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a00ab506b2f568485ad01d6197199df72e9dbde96898fce58cd4693423b683. 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/PLF241906117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc613c4f5c377875f57e2834b6ce48f310601bbd74b158ae1b3c4db9967fc2763. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/PLF241906119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27769d2cfafb358db49c36d8250af06efb871aef6b447b166b408b62948bec4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PLF241906122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10408fc469b9d410674a759e22fac61e34663692a5b91e3adab2dbded403e39. 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/PLF241705090.
Bez wahania (feat. Parzel, Jaźwa, 5tka, Emilozo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f43bec67ac31e6abb104960738e3df93deace55cdc8b0710998796cdd7721be. 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/PLF241906126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6972302c8d08a02cd694ee77abaf4104135f5d4b2c8fcbcd6efe1622847040d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/PLF241501722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee762cb64516b066c4ca199392da76d32f77537d8cae6395e7ed73ce547cf0c6. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/PLF241501772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0553127581591feb4e12dd15168feb003ba90f6130d9f46dcfd9204db6956c88. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/PLF241501723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf1e8cfdc58c46d3a0d174e4d7b5dd8c63b75f737e59656c3b865f71328ad896. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PLF241501724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ae1d7fa8b6e87587cc122ed33c739be2aacb008d79200a72fd70def003d272. 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/PLF241501729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27575d002560c5adf6915fe099235f83ad5f2321b5548bf715e2c37a7a8b655f. 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/PLF241501730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5e0fb28c65cc0e3685275b147ef6eff98090374e0a6984b95c1ad6d43ec040. 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/PLF241501732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1010028f3364b068872ee21c57b49023badf259dd36e52db6b3d7adf50849e7c. 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/PLF241501734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86b4d616f4f74a3f1d43f7048da0e8adb97f2ff803c32b34505d214fbfdd3c7. 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/PLF241501736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f2aa19aa4991d7bbc9a2521b1b63c40e5da5971d2c6561d3e3baae6c259a9b. 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/PLF241906114.
Homies Around the World (feat. Midget Loco, Gangsta Ric, Płoniak, Łydek, Travie So Sick, D. Salas, Moroger)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0c5995f5f5c57508c25b8afbfabf688f530fa6fa63b8883759f3a7542ca31e. 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/PLF241906194.
Bez pytań (feat. BoKoTy, Peres, Epis Dym KNF)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb4f490fa5f9aaedb6c49bf8a69c4b2c1a9bcd4b796e9aa43d220b8a73c268d. 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/PLF241704808.