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 0xc8de65aa9ea768789265ad5e3bf8059bb8ad3d9ebac10211ed664289ad4b0e8b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/00d658e8-a629-42d8-ab91-f0311633ee4f.json and https://artists.proofprofile.net/proofs/artist/00d658e8-a629-42d8-ab91-f0311633ee4f.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 0x33a7433a19f6434e1d8dab3c80c43aace54c234cd6adb606e2ea931e25fff720. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZFYX2024023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cbf3718b2ae0c2c134ebd83399cd5225f8076663af7c57b641e66709ec51fb6. 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/QZFYX2024024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc057ef50403c82fc3fa069b367ac36b47e22a8d2de700483f25a8a6bd72fb121. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/PL88K2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf757f01b7c06d98b3f93b3e74badd1b758c54fe7e3cd36ebbe56b0a06ca43210. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/PL88K2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5d9ae935c3c37cd3b0917b8cde8f90a4a5c11c826af02e1a58761733108b12. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/PL88K2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11e8435db592465eaa366c05c06aaf32065122fa699b40263a028883e011c4e. 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/PL88K2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23bc0ef0637fa4ad21af20d1bc37fa12d2442660e1552899ee658623e06faf87. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/PL88K2000009.
Jesteś, który jesteś/Jeden Korzeń (spontaniczne)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72c40c7eca085589bea0518125a88eb369be8ce4bb5a79f4dbeca00de20ee76. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/PL88K2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf819c973da213f2f3a285b8c35cf1ba4b6cbfe95ac3b8474e9476594f5eab52e. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/PL88K2100001.
Dosyć/Wszystko pod Twe stopy (spontaniczne)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662b1fb378d6c774b399199a3a8ab4b5a833661febe119f46c1d0ff12a108e0f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/PL88K2100003.
Wracajcie/Wołamy o więcej (spontaniczne)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f27493f4b6156b226b349c85f63a1562e3225e7e966abbd44f10e393dc10f14. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/PL88K2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f755d6bf94a5b3c4384a9a3aed0153c410942ccfc70511efb8f26954ca00e9. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/PL88K2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c2e8926eda1bc334d907b667770d8920fe41822dc3e55ffa0295663024042b. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:42:02Z), 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/PL88K2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fcce74bf94fa4ccfff2e5443a3ffa3428c947d3f0ec6a88994f303ecfb10d68. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/PL88K2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ea5456bd0e09de3ed177709dcc7587cfcac91826f6bad88c909aa9374fa12f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:23:56Z), 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/PL88K2100010.
Odezwa/Twojej chwały nie oddamy innemu (spontaniczne)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55f0109a951a8378c8c2cb51050213319f4548a94344f5401a05781b4f47d69. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:10:35Z), 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/PL88K2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317af0f112d75344fdc8f13602e13ec98edc25b53188e2a26c106bbc273d13c1. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/PL88K2100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc22925027e16f9574dbe34174f3611611292c4ff790f4c4a5d177e9aa15486. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/PL88K2100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ec5452e7bec119c088aa0b2c2320c2b280ad77e4d9c0cb699189921a2d9a1a. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/PL88K2100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a35bca1cf40aac47203210d6f1409b349415a630c0bf619eabd2cf28ea31f65. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/PL88K2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949bbe457a2932ccfea30da3e455f31f4ebc832af7b27f73ecb3ef86d28ca790. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/PL88K2500005.
Oczekuję Miasta/Widzę (spontaniczne) - live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0b8942d723280d01634d7634859c3a61846aa0993029f600b1028465ff17d9. 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/PL88K2500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc4a63268e62ec15d18302f62eaa9fa357bd173198b26f83415f5755ed87961. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:03:26Z), 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/PL88K2500008.