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 0x99a9034a1f45345972836e5f253ea4b9a4eb0768285377f7d2c45b921e18c61d. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e957ef1e-f7bf-409f-bf5e-5ab251f1592f.json and https://artists.proofprofile.net/proofs/artist/e957ef1e-f7bf-409f-bf5e-5ab251f1592f.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 0x310edf81e861120312394506ca1511c14d9fa6eb5a01d63b7b9c7be6f5bb60f8. 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/HUA257122018.
Azért vannak a jóbarátok … - Máté Péter dalai a zenésztársak előadásáben
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0b36538470d54b25de81dfae48879ecce98d89d3eabd565630b8c06c1d7022. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/HUA257125115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b91082e21f7282df8da1b9844ad80330599658c7435dccb3e09451fa88bc832. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/HUA257125116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb69b3c45fe9bf53bb094fa7979bde7b866817bdf8915af22f81e43595e0f726. 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/HUA257106401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49658d7ce3d3d057d723442aed608206a31629baed5dfd310e77cc75d489d4aa. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/HUA257106409.
Nagy utazás/The Long Journey - Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8bbe7400f0625a6ac7bd3fbd09d240b1e8ff1bc477f293482fc17cde1a16b2. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/ATR980002929.
Miért kell, hogy sírj, Argentína?/Don't Cry for Me Argentina
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e44fb676792aecf15e300e46e8ad9da2f3b3393e31b3920e9bf87e918d4456. 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/ATR980002918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0babbdba51ee8e550aff50a977ef67820cfb8c66becf31b3eeb990c0394aad9. 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/HUA251674801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55767678168fd2531811f15419c7148c4869efdb714f7e81fbc1ebc6a65c2c3. 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/HUA251674802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x209d8144336a4750a5f1da3a86c6b276c3133569c4c8534594051e4b7230eabc. 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/HUA251674803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2615c0ec953e20ee0116bf2938551e92ef5490c845ac300fc0a684fe4fc67236. 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/HUA251674804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb35d3f90b384ba3951d3361f076b90bdb53a5209be4a0cfa69d578bd51b7ef5. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/HUA251674805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a7769958b7d2db07768606d722049ac702750be013ea21fa20d1d95493a080. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/HUA251674806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840350c855e2a2790a32e1fa784a27651054263bd44a22ffdd29757dcbe82f6e. 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/HUA251674807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd4b9a7fc3fe534f2ced807616b1ff2cd4442fc438226895e65aac0e7e2a5fb. 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/HUA251674808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3ab40fbb18f0c7dff09078162ca123242d99e1214fe636f0e9429e01b9f0b4. 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/HUA251674809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fdacac7025d4b603c4c5ed4be20efb4af57f3e5b5c4ee8bebb2456cef632452. 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/HUA251674810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1b236625032eb554a9e3f38dee1d60180d858e8b29c3b93ff70b826315c250. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/HUA253790107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7914a21e4adaf12b15d183934cfae37cb0462785e2330eb101723621d603e85. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/HUA253790207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ecc89d74f977b37711c8ee42c932d96dc53c481ffcba4a24ff1f02e7f7a5ce. 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/HUA253790108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8b888063f44a2cee76ad8c2a82b685432adea8987d1408dfecfa03603173d7. 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/HUA253790211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd868b68050eb81259e9980bdae75b50e2e3a27356b4e52d2881f13c4cd8f5a0c. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/HUA253790120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab82ebb80f4e8b68b86f80c440d23965a993a7b1e8e0ee8f230b16fd6639192. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/HUB001400085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15205fe0336f163a8d4a7129796fe08f6eac98051bfe67ff65d236e938d7d70a. 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/HUB001400086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347a64e03762eb3f1f20cb84d8f3b033cd29ef7fc8baa12d04f9a0f0f0b30793. 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/HUB001400088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95de93a2fd28d4a1fd5bfbd9ae2b08634118695d70b438b6a34b10ba43ee58a. 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/HUB001400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b56ca4e808140af8ceb3560af9e39e6f3632fb14ffae9083ef63646215046e. 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/HUB001400090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd825749d2e1001125ad781cefc85185fb4cc9319b28f6710fac8fe4713035e. 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/HUB001400098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadaa485ed5d823330ff5521308e26dfca119f805a6e3939d298e662ecf3f9d18. 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/HUUM71300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc3222309d3896905c53d8a5d4fe76d1b48ad35bf1250f7dff9fb2ce8b750b38. 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/HUUM71300052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ad71897d11ed093020c2b71db232b826929d10a7b1475aaa4e15e446c9cea8. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/HUA257125105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc664bd4176834b902f10c52f3d7a15f3a9bc32b4d151417400aee99e5c6296c0. 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/HUA257125111.