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 0x8541b5896997036cd9b4de349dfcae49d8ffc920ff25f4129536670536202cab. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1123e494-452a-47ca-bd2b-8836a54cdea2.json and https://artists.proofprofile.net/proofs/artist/1123e494-452a-47ca-bd2b-8836a54cdea2.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 0xb70f6ebc102ef4e50b0e53ba02cc5ec0df4900a1395451e8d14e576640414118. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZKDK2138225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f10e155fd29f6b7e99792f53963ef74bb19800c66902d7f5e88c683ff6c99f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZMHK2231564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ab7301727e1f8c07ffa1a39df39fd68fa80871a43e5b67d8273a536a5ec076. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/QZMHM2056582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c516bb8fbf7a3d25ad3526cad90a804536ff768a35c6d840e1d234d0dad8a3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PLR862200523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2cccd52c4ca32c9dd05da9d9e523d576cf5d6e9cff9bf559cb29160c295d3c7. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/PLR862200553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79ca20bff62242e1132be17a88e00203322b04e0929a7040a1364ccc7eea7ec. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PLR862200744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0c4dd952d4d06182e448ea78f0df76e82c5883bf7600d19453f1a590dc3267. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/PLR862300153.
Limuzyna (Antony Esca x Mr. Polska REMIX)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90eee9177590a4868fa6c5f590178ada8ea65ec821bf64bea22ba58209ba8e9. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/PLR862300576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa236ba8edccdc1a5621db74d75f7f88c00f27ce06335bf4810d65095d9deb246. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/PLR862400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf188b68301b1d43b4974f1098586f065072d57e9b370e6e32c02a8b55f77a5. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/PLR862400044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c8be1a921a70735edcb2c2237f10f65403badd1de5ac4a0de416ecc50bf68a. 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/PLC062418419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919cb1674cef88b73d1ab34420e0c53ef632805ffb7604d191fa3ac8c98941d2. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/PLC062427908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024395a5493ee45a8ca2b41d89e22d85ca717f8a863ef63ed67d82baf2eff9b6. 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/PLC062431758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1971d5be05294adb177dad9f189de1f077a54cf5c83035e5978bf33d59ee65. 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/PLC062406334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7460b58fae2bc050fe133e1c59094cda1a8ce348a76468749c3f8d741649dd2a. 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/PLC062411628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fdd5a63f2cb027b1b73916fcee202298349412db2a0fe311170c37e6a5126b0. 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/PLC062431759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2797035210ad08f6201b06cc47d1a7097f9de92d1815777e8eda98d62411fe26. 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/PLR862300629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c8be1a921a70735edcb2c2237f10f65403badd1de5ac4a0de416ecc50bf68a. 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/PLC062418419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54755402004a01c49ca26e4e34412cc7fda64db26529f0c9dc45fc6fd4efe31c. 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/PLC062422504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e6c8498266812738333f40755c91af521d41a4ce82557a9f55c5eb31c48a31. 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/PLC062416601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad94601f895fe90e3bcb9c9a5371b7ffc9c12f7b41b5486f61f6b30a90c42eea. 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/PLR862300065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0c4dd952d4d06182e448ea78f0df76e82c5883bf7600d19453f1a590dc3267. 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/PLR862300153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6233519304402fa815d012d7b17188e0ed81a4fbf91ee09b234b342a6c8a3dbf. 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/PLC062431760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1a3ef2135567352915d7e4200ac1a310a74723d374ac83c55589668a2d41b6. 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/PLC062410144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0acb9279797a4b861b4822c9ec5d57cd3cbc7996ee91ae0f17f437a0d4bb4bf4. 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/PLC062403171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8240ffd82df030b6bb348bf2cb677c01340cff7c207db2458ee39ed34ca539f6. 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/PLR862300547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb9c9ee038199c3866e18b9d91fd55c48079e6eb677fed3c0fb23cc09eb9daf. 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/PLC062413800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f326cb76c80c6b9e54849e4a04312aca5ed0d38bc0efd72573be1f29dae576c. 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/PLC062408909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06911808083f5212dd912fd00e84be212825eef7375056edccf865f9884e4287. 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/PLC062431768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919cb1674cef88b73d1ab34420e0c53ef632805ffb7604d191fa3ac8c98941d2. 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/PLC062427908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e8ae789f0c94e80268b7f2330d2b79c19402e1f0ab2e9bab0a6ad3563244da. 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/PLC062431769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8ab3685dd9fd9ad7382a5437aa2f982f324a9ac2208f95b11139dd716d2ba0. 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/PLC062431770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4263b783ccfbf52ec849de305cb6b95f7f1cbb27f6be57bdc425f3f2519d96d. 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/PLB382300105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a10f3db1a9c933e23b04c4b6a8708aa4c469a8eb6f15812080a4519e7fb08c. 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/PLB382200115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17089301e764468d4b74a2cfd8ca44f9e764727f7268a48b95598a090ee1e261. 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/PLR862300448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b1ed10390c7ddca0eebb76030921336e540b5f1a7953d4304bb31764a06fef. 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/PLC062439691.