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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fef6dfcccd669efbce0c1c0934eb302814b72513b050f4fd7535bd04dfc6406. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/35217b81-5577-4245-a972-805316210f0b.json and https://artists.proofprofile.net/proofs/artist/35217b81-5577-4245-a972-805316210f0b.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1982a7fee76e9acc778a3244e6abdc2a4b0d87f975ddd76674ea44ee35a164. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/PL60I2011106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650b36f3c925f1153c6345c2b877bf980c4846f6130358f293444ba71b0017e4. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/PL60I2016102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7861e82be3f1a6441c44a7b90e937f946166ce9049969c40e4c25e2578ca647. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/PL60I2016105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa963b2b78ff62d1a153194e3b9180b6af10abecfb6babe927a2bbd52869b99b2. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/PLP661700101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58bebf78ca39ef7491bbb45e4d2c87fc32b3d9627e7582ceeefab13a80aa4c1f. 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/PL60I2000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d6501abf01bc425a133269347bcb6a251f86228598330dff3c9eb5f48a04a5c. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/PL60I2000102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9aae651545dcc8f1ea5bb1ba6cd617b37354b5d3c47247c67f82124ec933e7. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/PL60I2000103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac1e68a0682d5808a10d5d1834a7f45f6405338d4aba1fd5ade5503346c958e. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/PL60I2000104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7959b0c65b74c5d19931666932c977835b80168a1900f439ab25e63d7c3d8468. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/PL60I2000105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28902a0c3d8247509a387a546941f8b56e19702cccc9b1ccb62eef203a05dde. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/PL60I2000108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdcbb4c3db26c7885b761f1e3aabb402ea9e165c913bc42f6a8fc3fade9a85b3. 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/PL60I2000109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d7e57b1b78d8ece07531112874024e5df8eec2bb6789fb8aa5a766e24761d6. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/PL60I2000111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82771ae528b89d449985e7a9cfa8f7f5b18cf2d8145a80c667bbe1aaa8080216. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/PL60I2000113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aded567df63d99db8533098210ae34e421bea49b30e19de6d81fbc750b57ce6. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/PL60I2000116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c797d90b31cd8d85a3bac665fafd7cdad1092759009a4caab61382d870c2009. 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/PL6A22308824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044faea3eb07e2d90ced2af88f6f42ac1b64248c2e721e8882dbcdf9ebc6194a. 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/PL9B92350841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9741fb77b2df3fc0ec985badb912e103b912c51f20921f77257a6dd2dd552304. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/PL9B92350842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461dd2c3b53797aac71767891f56b89779f0b171bdc6eca7131d900ac36cfe57. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/PL0B62366440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5342f1d50d2727d7f3c036157592e7b56c4e1b1197b16515cf1a5855118482f. 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/PLH492212981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa344a75e01dd9cf02587d859b475d0177e343bcca0bdc8297c2553ebf80e1ecb. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/PL9B92350847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b27c4495606a8b50495a7422d0076bc51352dd732faf9df10d9f4d32378eafe. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/PL44J2519501.
Zabierz boga na trening (feat. Luxon, Arkadio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947ebc5eebcf2784c7e509e8cb688c6ed1436a54482b96267ec7398f8a91b037. 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/PLH851600011.