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 0xbe5ad2522144882d2b87e35bf6c12f1093be320cba2a94d17b32482b052930e2. 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/066ee738-2636-456e-bfc3-01843432e382.json and https://artists.proofprofile.net/proofs/artist/066ee738-2636-456e-bfc3-01843432e382.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 0x09bc59b08df2d418478dd9e30e89ae61604cd2b8017e8035eaebd631fa9cf320. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TR0150501304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd662045ff1fda98dfe5eb41e5e1a8fbef9a063fa424ab719252675aaed911015. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/TR0150501297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6085e287ec4e99d98083a6d811bafa1864501347cd5031c16cfbb88e8a875b6. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TR0150501299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d967e863dad9f2b4c77c7266b0219058dd5712dba4b1a5d712772dfed990b49. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TR0150501295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc739857a50d699f92ba5418b6c11a5f76b63d07f511fbf71bff1c56ec91e9c3. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TR0150800133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3935e2ee2f663ad61c9b1e5d1f341d2cfa53e3da13cc1ef18f997b2975216ed. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TR0150800124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7879a03a3c98b95eaf1602aa6be93191d24e46bf3e75a6c6c930b0464fed0b12. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/TR0151200082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8163b345dad6cff3b28f0438966d85d9831e89047c3ad56f7e0f158e0f21455. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:11:23Z), 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/TR0151200084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970886001a875162a01c0a37cd792ec9339f577ccf875327187333be375f3113. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TR0151200086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f1b368f0b29f66a4e429bc7eeb741b31116ae537c1bc580b46b2a2df036ba2. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/TR0151200095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262e77c23d12f7d393d1f5cd74c630f22b033d2512bc05d1c1356dc0097664f2. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/TR0151200093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe970c9f9233dd4d23848cf8444ae6e466a86f221647da025fdacddd8f532c0a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TRARD1600036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2a42d408f201e77d48217686a2f626287ce6aed7b504d623ce8a532d229288. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TRARD1600035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e401bf9655a6d4d5088eaf4a161487d0e5ee62c14c8b63beadce643c6bf13e7. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:27:56Z), 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/TRARD1600028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f3c2164908568bcb7556686529f45ab9c8035a731ac0fd3d6edee4df24bec9. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:53:38Z), 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/TRARD1600038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ddac142b15d77935d5b91f82d64c4b478c8782ed6f3efeff15980d810484bd5. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TRARD1600024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d47fa689e5fe3cdf602d3205c6c229cdb118bc00f746febcbbb17b10d005000. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/TRARD1600037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5871cfa2e2a8a109ea14269d626a234720893a6a4f734dd9dfc46f9ff2b9eb. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TRARD1600029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40efce2a3e83e4fcc2653951779556287c5534d453b3f97fa109972a102cca9f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TRARD1600034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ef419d7385d8b429acd0158ba8d195eb6e7b00c3bd01b8c1cfe8ea907eee5d. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TRARD1600278.
Vurdu Beni (Aşık Haşimi'ye Saygı Albümü)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423e7a54dfca6d9271125f3aaa1fee84b9ac61115dceeeed933d52291771903d. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QM6N22424484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b43b017005d8def2efe5ed3c160dc6a27dd93f830a6d84081f64e9e343554d. 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/TR0432104332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1aa62b4275a42eee5ab9e4bc747e3bb2b72ee71f55e890df0794c675e7b8e53. 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/TR0431603000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea538100d92937b29dfcbc23646be7e3dcce3acd488101f829d9bd925d86def. 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/TR0150501108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04142bc0d8e27649a7ae6771d921962ef250c5cf4a5a0a9864dbed3955764f90. 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/TR0361900044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7336d92abda949d2eaab01852eb61dc29f9b737d8fc9aa8985ba2c0b2c1b40. 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/TR0362200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af9ec946293f4c2a7a10d0e57645d6f39aeb8c7c50db193e96594d9fe2a1c8c. 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/TRARD2000067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf5e61c4ec1a82fad16ca9dd17618ab2a3c6e5d6cc8cdd2c34ca0d80f3d7660. 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/TRARD1500312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5068cdeffd1da46c4e68bde2da4e58dac158ee386567596a5fa4c46c21b43776. 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/TR9932200551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc217b8d6acd1d140d055cfdb873835bead1b4de90200a6976b6fdc246e7aba1. 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/TR0150800070.