1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xbfd2a145dddcff6de694e523c40616072d04188a978aa74b1390869d0a66a1f9. 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/cca5c658-aedf-463d-a18c-4694576fb1c6.json and https://artists.proofprofile.net/proofs/artist/cca5c658-aedf-463d-a18c-4694576fb1c6.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 → block OTSBitcoinBlock must exist at that height 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 0x84f1c90255a51aa84638901d83083dba90c999fcdcd00f5e8b04c796d8981761. 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/PLC071111001.
Moja Pierwsza Dziewczyna (feat. Chris Carson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87dce2a8c57cc502c19ed9c938dd1193d82566b2d265f7b1355a57468cf921a8. 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/PLC071111002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2586c61b9e1024b4f2ecbbf9a926d5287013009fc70cc731c6fbe9f005e57032. 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/PLC071111004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218aaf44a3aafda23f88681e6bf1126026530b575ed43a42568cee3bb883b64d. 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/PLC071111006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c2c3de100dfa52e360ac6de5b32970f79d0257e0bec352a2df49ef95a69828. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/PLC071111007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8f17bca07d6270cdf4b986654c54ae2319cae102aa3b3b5ae1770ee3c0c242. 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/PLC071111008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888017d7a5837cae273aa6eb2229ab71da09b3540b5916aa17d9e8c83866abc5. 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/PLC071111010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5dfe330fd04c979c05334096bd8de5338ddfe078d75bcca44042fc4432b625. 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/PLC071111011.
Moja Pierwsza Dziewczyna - Remix 1 (feat. Sokół)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447a112d658abee570b5d3b83d93dc211310cec5b434d0f4286013fa9a6d52d4. 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/PLC071111013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962f521c80bced7275ceb504075f7e54e0a2ae163ed20e579358af2894ad102b. 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/PLC071003002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44b8c37cb65b101973dbafae0c66b2ffe9f7de8a3ee1560563b97e54375140d. 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/PLC071003003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80cc3f40ef37c7cb212cd6d2d8db9fc88edbe2193577da3db14baad411927313. 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/PLC071003004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3ce225401d2687c0fc776e8e10c511c4ff66c906a88e583a2a17118b5b102b. 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/PLC071003005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb919bd79d148de7477386af57008e1e3a075843bb5473705ede1fbd44177f0e. 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/PLC071003007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5c09a122582142f3328f267d7165e9b01b47de6c594e5cd9cef2e7212882b5. 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/PLC071003008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb3a57595c67b9f2956772d83cd4a9fd251d2f5403e069b510a603dade5dd52. 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/PLC071003009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40bcd3e6b94ed9cc4a4ca71bf045f46cd9660b3fc08cde83ed5326bd9b4e9c3. 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/PLC071003012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca80ea896cc1843f6872b98f546bbcd158cc4002dc702eaa9090ff200f6ea372. 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/PLC071003013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652aae6a69df55964b66bdefbc00203d6f74b2207054794926e1670ba92fcf9e. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/PLC071003015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d673d7b2cd30a7e331df363aa6f811388cecc7be53df9c1f7515b1b586e8817. 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/PLC071003016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2153a28b97599c7bfb1c69bf4d8d662e419b789b3b817adf0910d6351bbdf5e2. 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/PLC071003017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d78b311526a88744813a08d5857bf373999700cb7ddc4f315a31993dc9af087. 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/PLC071105013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b3651a3f1b7989049fbd6a93698a0a10bd7adfe10bcaa129bd661a1c7a9838. 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/PLC061807379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01dd485df5ce9f79a0381cb902e02042d2cc0cd8ab6671c1006214dc11f8eb7e. 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/PLC071203004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98ca2b10a213d870095a6b2c7fd0886ce3a0ac6ae526ee7f7dcbdb40f65f47e. 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/PLC071203013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d64f5e1d1915440e9af0d11e0a89a035a385a4775e51c20ea37f9b28eb58c86. 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/PLC071512001.