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 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 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 0xf10709195e17bb40f8fe9b634cc7f908e870a7f518e9da0b42343aa8f9968dc4. 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/HUMAG1900085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe496e3bef03481f7d7415f483a6c684e9caffff05ae34d5e6d3ae934e4287b3. 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/HUMAG1900086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469ca36854f6e9d4199640602a75cd5396af751934f4b96dddc44083b686c2b8. 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/HUMAG1900093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1d4b385e0b4db10dcbe1947646fbbd8e2ff13080071a2376b85d770ffffb5f. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/HUMAG1900095.
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 0x72c374542861ac11fc56563156c5d2ed160ae3c7522daa64ee636582a8765b17. 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/FRX762302897.
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 0x46b2fccf4fbb3eae67fe3172024bb4e063d6cebf2ab7367c87ca9a22c8afb0ba. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/FRX762311237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa892a587b6915adbf1d6d295845b412015924feb81a6dfb49949ff4cb78c2aea. 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/FRX762311238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d42a3737f12a7a471d99a4049a4fbd2c85dba56c878c4922b66107fa0a7ccb4. 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/FRX762311239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0527acd9c748562ec2d56ee620f3072bf74b578cc66cac283cf649b87c30ed7. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/FRX762343625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e60b5e5367ece766af2a926db45e5c79f9a318c9907f60223899ba9db54a6f. 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/FRX762343619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29dfee274791dbdcbb940cb675be7a3be5271cbf6464ac6c5ecda865919cc972. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/FRX762343617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ee709719e98f9fb798f409d1c9da5be2128f0bf0d8f2bad732648c4aa29401. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/FRX762343618.
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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502839243fb2e3a74a5d9b1387c940f59f9dd27013689eabbe8fe36ed6bd38c0. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/DGA0R2330685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2405117e45719845b9ea03fa46e65dbccc4796e08cb224897ce95a74a352454. 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/DGA0R2332128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0ea9de9b7a01c20af34cdc4247e48b4670599655a84776b6725b2a81e7e73d. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/DGA0R2329680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2efdf054f336cca9a57e9147d8b40894846c703c7b9c9a9fadbd3e7e91901f5. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/DGA0R2331062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a76251295371404c86dafa114f82c43436df6e44063c4776272f009ec231744. 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/DGA0R2332127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db5b28285703de5f87bf9fac66c6855e88115b61e9c0a409e6feccb542a297e. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/DGA0R2330106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6edc71babaf42999c58c7570074846a8e0f0105fb6927c90c6fd047e2304791. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/HUMAG2200007.
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 0x36453ac5b306eefb96a1efe8ecff99a352db7c425993de3293cf95e716514968. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/HUA612103503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc50949f15f9ac08e622a205c2607bdf1207ddfc77a656f9761f1126717976d. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/HUA1D1911578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09707d550f5a966847853325cd9e66f538d62186dfd7baeeb4bd9d4eeeedfe0c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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 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/HUA182322201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02254d127300755e3f2934fa4add6da7e86b73885804924d9545e7110dac6566. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/HUMAG2100256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d51220f44e641f45c3a0cabfd0c788556aebac949ece03e798a452c53282eb. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/HUMAG2100149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44f26445d6d4416ba28c8489dec8826e5881bb834fe30136125233cea529300. 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/HUMAG2100100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7415940d3436b6ec853b1e3f5a525908573b9b8ec0e1c35a287100fb84c77a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/HUMAG2020550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28b851aa2d1b44bd792086b02e5b7a446e21b4f0e931da918f4aa0c2aa34224. 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/HUMAG2020438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd7244691a7248ba7df9403eb3758acac43add7f581c2e1a25a4f27c29e15ef. 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/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 0x4c2447cc2bd8b8c06766c9daa9e3196d7a61554b47533406f8f5111cbf7cbb16. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/HUMAG1800010.
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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580f5297bbf66b47c2b657e29dc25ea5c85e26d301e6109a1ab7fb95791f8fe8. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/HUD341400278.