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 0xefd8dca8296acc144f4b58790ab211e9449fc586dc9d1265d1b7091a8c806e61. 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/272f29d2-ebbc-42b9-b765-29c3de08bbb1.json and https://artists.proofprofile.net/proofs/artist/272f29d2-ebbc-42b9-b765-29c3de08bbb1.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 0xa15dbf9fe45a0ff68a6639bae3bb0a33496c26e440c7ffc250303c339d3866db. 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/SE5752471960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706dbf1e82e46d191ae510e8dac89ab64db63645bfdb53f19fdbe59fdaa7d3b8. 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/SE6XW2355612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd6f1cb47aa7c4acd783a260336a207bdb400431470413dcd1f794a84ac9b9f. 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/SE6XY2336792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50fddb6d00ff7e0a18758f900c273bbe4e7c3478bdde1ad44ab6380262db5dca. 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/SE6XW2385769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3d410e61ea4eab0239249ef7aeef38ff0afacd710622e0ee68427d6860ac57. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBKQU2445830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2fb059a4060bb2b965c6165f67ad07acdaccec2c0e0730b86fd851ffa5154d. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/GBKQU2445831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b6448d57c23097cca86cad3a7fa6473ae920826559b3fe62f900911bc28791. 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/GBKQU2445832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46dd66ca1a6218fea671f2b12238f592b7c408418c18066ec435d889cf475b4. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/GBKQU2445833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3aac1490a2032d160ad48c303c9728f121ef7dd2de5e1ca674bd9909582894. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/SE6QE2411874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf92651245854fc87187bd7b64454d4e324a41709139816db692ba7d39cd101. 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/TCAHM2304891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd255fd89fa861b9e784431f221dca998ca61f7728f064b4e0e5fe7a39af363e5. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZZ8B2327449.
Foniklab Records, Vol. 4 (Compiled By DysFonik)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb9af33d826f9a49d22b1c4804a7c6e86963b412904c775d252468ba032b1a4. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/GBKQU2432663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f964c387507d6e407c24e2404f32f3c57a91393d1dc16c40aaa2b18293520f. 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/SE6HN2455133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb217f01cc1cad95d7929827071151ca2fd530a4c54b32136bda041f230383f9d. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/SE6QE2406886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2911aaefae77029d76f5328d5ced10b272d87acaf97a4340cdc2902a91fb495. 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/SE6QE2406887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fdba2f4a471916a38522c399ce65c4521bddbf66ed95108cc58516ce5ab7b04. 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/SE6QE2406888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ec24cf158fc51af7c44da12e44300a325a579e3bbfac7c559120361e339d1d. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/SE6HN2429382.