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 0xe0f15f9979402a81d1aa41f51555071c179390193cf4b1e5c70b8f5d835c1ebd. 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/a716e976-61b2-4342-869e-860f71826ea8.json and https://artists.proofprofile.net/proofs/artist/a716e976-61b2-4342-869e-860f71826ea8.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 0x327d814f3352a5f9099c6e5f2af1af9976a02311528815fbede9be0d648a928a. 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/HRA049938637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb82877ea6f10af3b9486756114fbcad284efc6a30f91217de55fe905cf4828d. 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/HRA040637142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e52c26bc87ea1de4d50eb2a92d2ff1efe275087a91d3632c73dda9e132a2bd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HRA048506018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9fbb2eac063045914e12652d4ed2605cc20d13c6e93c035653e4bdd38776bb. 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/HRA040142033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc47267150b2a67f453e35124343c590ffd9e03d70c6310ec02b15cfba0a3b6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HRA040643308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c7d6852757e06662ec23e921399bd659187c8fc3e3f4e2170cdf2064345b5e. 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/HRA040648831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4282cd7698e9d17211fcc60d560e4e2233a4e6b81563dd2d66c8fcb1a421f4. 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/HRA040633166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82261f594970592076c60edd96c59da9516f7d780521eeba14a189d39ca0cc0f. 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/HRA049023829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876b354c519e64c478b08aab772e521644780154c928b57eb1f26e2b7f63ff2b. 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/HRA040643467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdfe2badc547e2afe0ab6595c460a1d389fbe9098b90bc224cf411f810011cd4. 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/HRA040648835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852e4705d95b6e680e7421d79cf00ed040aa030cec866109618baf7842df1d54. 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/HRA040643312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d983249efc1a0709051cc0d8f0938b28802c32b9b2d5e9167751732a7e8b75. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HRA040534080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31c5f0d1cc65d5bc200812df0ff542b898fa3331bd9066ddb251f21b810a064. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HRA049329231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8a3f2fa42cd8ac529c16324c77a7d323bf8cdb8ed2eb6b1780b0e61fd0eb89. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:21:47Z), 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/HRA049837472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d55de2abaed48b3581788b47adf55ec8e7e96935a0e921de59919452e196e6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HRA048506019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a51395dbc2ca677b6588d3a417921c46223d8bbca7ef7b6134928513cfefde0. 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/HRA048948836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334dd9cc510d7cd5386e2090af3074563a9260996c59ae5d9ef3840916b74b94. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:22:30Z), 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/HRA040620449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84192f08202e3c2b2cc5b788fc98380d66b921402e0eb8a6d1323c61608d5c9a. 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/HRA040648838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c1a74a68dd17bbd228d40c4dee49ff582f6f564b8061acfeb9cd85984de8d0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HRA048606263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1a63d3d5f467b7979d776ec627e37c6ae9ab8be195627d634e803835587435. 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/HRA040648839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5386015787ac59e5e6178cc48e3c6ac9f404eafaa85480b4a5f472de7734e72. 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/HRA040632101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b24daec9dc6205ce2a2322f128b702cfe9c81e4981eabf183d1675ce355ce8. 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/HRA040636672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900753ca7663c90f6996a772bf0c2e90f0ba5f5d48b86b3f18313f06bf39adb8. 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/HRA048819460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d278c37f54f79168e12983e3a293f4d64cac1710dc302a94d27dd93d1fb88b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HRA040643268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e83a7be70d3987fb478836a86398d7203822178bf31ac480a48e5e5349d736. 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/HRA040142032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcccaa0ab938ab0140972d344e1cc0114a732fce3d36a7ae2a2e04a049e51781f. 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/HRA049227007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a5fe2c879e6771eb621113a7d9be158997f446300fecd6d23ba27405552e08. 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/HRA040629220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6248f8def2212b104e8a1b8c6951f8a4c5b502e58d761121f9dddd9506cf59c. 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/HRA049329215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa734c14ba12e025d002ba60a7b0fb4b45b5f2b9287461cd82e9ef6ea833b3fdf. 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/HRA049329216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297febffb601d951f353b854908a76c22634c132ad418e823bb2788d0f65a538. 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/HRA040648841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc392260e8a2c71c6ecbc0614cc4a712a49f21851cde53a9bda7331d5e7456726. 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/HRA049835631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5192bea817c345c28f17c986650a14657c1f951c65badad388f52644e314bbc4. 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/HRA049329224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3a6f601e94d387c20682a2300f9efea2bf32d7a179b3093e1d2c579410ba0d. 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/HRA048606262.
Kako Sam Te Samo Voljela (Bog Neka Ti..)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1033835ef73a4933d0176930bc1aac0fd6d974cf06805cbfb534e224f5aa67. 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/HRA048705646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82038aa8c494b641e21eb5aa9bafa9973517b026cb061a828abf6f97b0c25861. 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/HRA048506023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0fc04b68f240916b5d6c7e7fde01b4b1fefcabca82b7db350d6587f8f7e2623. 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/HRA049329225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d9f2ad44a89ba9a01d046e019e57002e37c3ca01f69d7eb19a323d1dc85260. 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/HRA048606258.