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 0x012084b68d47fd549e20c2c9d16559453fcc4da991b021d964bed212d88a1cc2. Chain 2 (Bitcoin): anchored in block 953759 (2026-06-15T08:04:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b1965b66-7cdd-40dc-9d1c-031ec0702051.json and https://artists.proofprofile.net/proofs/artist/b1965b66-7cdd-40dc-9d1c-031ec0702051.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 0x9ee764010d0c3e1f534a2739a8f90d0626a9ff94bae0be8b44269ce0eb997402. 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/HUA251775003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273130ada196db8cbdb4a87b33c6c105194593c0cb64ccedff86e166ed687fb5. 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/HUA251775005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68125d8544c50ae279e6e43417263a109a18a43854cb532b3a7d19f75a7c92f. 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/HUA251775008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451de1ab54ab66e7448e60f569d98d910c2bc1bca8de1b8df48c0b877dc7cfea. 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/HUA251775009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43799a045c54fe6fb9e4ab8a0553156c8f00ff93a55b6f0dfe8b75e63463d7bb. 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/HUA251775010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09a166132affd24bd3d0fea77de97d034b7ed5bfa1231d295173b6f41a48448. 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/HUA251775015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7a794ffa49b29fb37a3b23167cb02afaf71274846e06d250b01d08025563ed. 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/HUA251775002.
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 0xdd80d7768cb1bd6fd82604a89ab1ff959b0030305a73e16b3883132b9a4abb39. 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/HUA251775004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d8eb21a6f270aa8656e0c2f81548f8b19ef3586bb2e0f24516eede80893ea9. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/HUA251775006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7367a7f59d3ffff3262967fc0132efb05053dadafe90eb5d071f570007ed1fe8. 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/HUA251775007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf388b0d71a1d4018c82f435aa3fee1b28a0b1ff095566e68e5bb18bc31420512. 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/HUA251775011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93494044d4ee34fa2d15f8579544454df2743f8bdf890523f69db05863e30763. 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/HUA251775012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0acebf9303272c74b3c82724a7112c667825cb7a3e77007583a54566a4afb334. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/HUA251775013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb573b20af502151012730608cdfab9feacbd38470f947b6b34a33e2d46d124ae. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/HUA251775014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71eca16e58e66262ca8e8b619fd6f44d2012160a552bc7334fd2c1f176aba42. 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/HUA251782504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205a145e4dd866f901b8e022959a16f0958b411c3181fb94122d547112ad7acd. 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/HUA251782506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2cdcc77fd52e91d1d909c391236ed503dce49138864c07e6684d18d7b698284. 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/HUA251782501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d786b8efcf4aabcf0311e0b46a65a049ca95b1a658e0ba09462b45696b047f. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/HUA251782502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3658f2260572241e251e391db21b937170e12cde3b3f523da89b23d9f595c882. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/HUA251782503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b328e5b6f3b346b5ae95053abb7491f1e0c04e3cbe09c3df9a540da4ec4b52. 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/HUA251782505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e582063d63404d79c03b660a2c6ff03131e5cc2f34107a86ca35476936d80d. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/HUA251782507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288a6dfe0606ff0b78984f2b6c1be3e2578d2208d6c06c92a4313341692cab3f. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/HUA251782508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a21ddc2659e3e2606e6231413366fceb016e6a984a484e01c254a8617018a1c. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/HUA251782509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356168fe4755c2db08c1a8414e7e643c6df23c6a67dbb2876e6827ddc4c69565. 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/HUA253785302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadee7b79e52974914f1423c26d1acd734da6b859dd71047d7ec5bbfec9910526. 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/HUA253785307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5951a3bdf38cc27948e26277362c69cbcefa419a951617385bc7cfadb1b2baad. 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/HUA253785309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa466becb7047c9889e2cd037506c02c4ea85b462f2e41f566a0f5e77aa61a3c2. 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/HUA253785310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadee7b79e52974914f1423c26d1acd734da6b859dd71047d7ec5bbfec9910526. 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/HUA253785307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356168fe4755c2db08c1a8414e7e643c6df23c6a67dbb2876e6827ddc4c69565. 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/HUA253785302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5466d7319f491b75bf99ac2b900e8d1d043eac1e6ca0465da0eaf9e73c8b1f41. 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/HUA253785311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb944dfb1010ad742aa956a2e5654fa117f7f34589a00ebff6607f35c748e91f7. 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/HUA253785308.
A szerelem évszakai: Tél - Halott szenvedély
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9717af2fdf890d4872557e12b946113d602c19033b0aa4522c73bcb0d96a4e. 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/HUA257120802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63058eb6e35cda8905c94d50fecdbc2409cf2019f7ceb2b94101667204145675. 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/HUA251775016.