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 0x26d30b44d07c718483ae374793cc4b43d13cb34ca4ca9e4fc0444c657bb3ff6a. 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/41e052b9-54d5-4c1f-9e20-bac52c7f27f0.json and https://artists.proofprofile.net/proofs/artist/41e052b9-54d5-4c1f-9e20-bac52c7f27f0.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 0xf10709195e17bb40f8fe9b634cc7f908e870a7f518e9da0b42343aa8f9968dc4. 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/HUMAG1900085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469ca36854f6e9d4199640602a75cd5396af751934f4b96dddc44083b686c2b8. 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/HUMAG1900093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c232789be9147c41aca2c98faebd4a8ca5f1bad5d45e62512e7e1f4c7699fe. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/FRX762302713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb614d8a5a732e64251f2502344ec7cdf0dc2d9b8829c17f7f4e3dc4e408535. 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/FRX762302941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d42a3737f12a7a471d99a4049a4fbd2c85dba56c878c4922b66107fa0a7ccb4. 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/FRX762311239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e60b5e5367ece766af2a926db45e5c79f9a318c9907f60223899ba9db54a6f. 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/FRX762343619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe0e4cf3bca953da2ba11b5f811bac58b20d4fc64497edd5626104e4db0150a. 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/FRX762343656.
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 0xd2405117e45719845b9ea03fa46e65dbccc4796e08cb224897ce95a74a352454. 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/DGA0R2332128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a76251295371404c86dafa114f82c43436df6e44063c4776272f009ec231744. 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/DGA0R2332127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db5b28285703de5f87bf9fac66c6855e88115b61e9c0a409e6feccb542a297e. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/DGA0R2330106.
Pilinszky Másként (A Pilinszky János emlékére kiírt zenei pályázat válogatáslemeze)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c1e61f6c697351a9c8c6ad5327371dc8e8af20a18307508294c699fc76ae55. 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/HUA612103437.
Szörnyek - Pilinszky János Téli ég alatt című verse alapján
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f60a82ecf8335b33ed515c8817913c4a0640bd2d6ed511beecf92a6dd91c3a. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/HUA612103502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09707d550f5a966847853325cd9e66f538d62186dfd7baeeb4bd9d4eeeedfe0c. 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/HUA182533001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672e97b54dc4cdd786030309b1e545df6bd64ab588401dae134a53cd6a519df2. 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/HUA182327906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd6034e3f521ffe6232bf71cf4a8893c2d0e7554fef57f54b05cbbb7c25bfbf. 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/HUA182326601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8444d21177ef199b571b8fbd8baac1517b912ac23c21d65bed6193095150c8ca. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HUA182322201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28b851aa2d1b44bd792086b02e5b7a446e21b4f0e931da918f4aa0c2aa34224. 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/HUMAG2020438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd7244691a7248ba7df9403eb3758acac43add7f581c2e1a25a4f27c29e15ef. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HUMAG2020169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2bf050a502f8b9f725ee5b0d92c2bafb3d79cf1e8e9b5a54cc025a4e15b7ed9. 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/HUMAG1900163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1163563b3f323a2d6716b783d76affd01c54450b4a82481f0a694bed5913bf. 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/HUMAG1700301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5026c4b4c9adf9f0aee0c74b1059d16d964bf979b7c1de8e7ee542d9866f52. 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/HUBN62000011.