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 0xfbac0a38ceab673b6e77bbfedabf637dc1fb176937b8a09456c3257a4439d4ae. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bf13710d-1ac3-4db3-9793-8e1aa4e7d72d.json and https://artists.proofprofile.net/proofs/artist/bf13710d-1ac3-4db3-9793-8e1aa4e7d72d.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 0x78935afd1a9b37ce0219e4646515d54c66826681710f1bc5268f9af25b3fbf1d. 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/HRA041165375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9887ad2a50ae5055ed29d84746ce3906012f3dd70000711d9d308c033abea1a. 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/HRA041165374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e0124eef1b8f72c5966a925ce38f1e2654d1884c92e231905ab702c6f03174. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/HRA042401327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f16c028fcf5668fd5bf0464c5018d0f0250a82345b5bc5e453ffa6101617e8. 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/HRA042401328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4fdd7e8300a2f555595d03491a5fb777e68606fd21d989478254a976c1e7f3. 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/HRA042401332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16d65cd735b1d1180d65d84851f5235699b9d3bda7f1a897ce7c375ef2fefea. 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/HRA042401334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071308f07c554347b79894f9f058447f609c8768a216f1f83b5918d8b0718b15. 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/HRA042401336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4efccce9a9b0af56de8a1bef97b65ef2bbd330de180491f53eb9f1b473a448e. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/HRA042401326.
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 0x06421343da674d075f1c00e435fb8ffdeb3e8600a306e32a428c21771e412cfb. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/HRA042401329.
Ludnica (Kad Moji Momci Sviraju U Gradu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac36633cc9ed6b6e76f92238761f9eee505ebe02da2d0ca9daa40f685d118e2. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/HRA042401330.
Kad Moj Nedo I Njegov Brada Sviraju Blues
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a5496b7b1074a9b4b7b493a0b69e426f4dc6a8715055a9b15edad2f9200653. Chain 2 (Bitcoin): anchored in block 960384 (2026-07-31T09:54:03Z), 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/HRA042401331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562dbca2aa2d22e84c69a5e28cbe0f7a06a279f4cef3a59560b6400ad9b19d02. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/HRA042401333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e0899755f8b4c70ec8baa9f6a9fa92e4c8fe2becb931e0ef6b6c02413fdf2b. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/HRA042401335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66293e9b1c32b65545bb33a08ea2ff045156c9f2829b9875cee655ddd4e38902. 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/RSA3W2300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0cfa96139b3c2afd23ece06cdda6bf4543efd67dd629821debd160e5feb0947. 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/RSA3W2300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9930f0b34c629d7b236dbf33b4f20e9a0c74126647bd92dd8b52eea657623070. 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/RSA3W2300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb1e0dba9afa651829ab291cb7e1d6d3e659e86e419f4aff14ce71aaeb4a17c1. 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/RSA3W2300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2595e88864cc7b5cf25b11fe6ba1e4d8f01b71c07bedd31d29969a228ee29c. 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/RSA3W2300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361737f4c53871893df7a8ea09ea78397cdc888cb8e0ffd64e6e780b2d9de33b. 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/HRA371002106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aae963bba9c0167638ac02507ad5709e77a715db372d97f4d502047362dc631. 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/HRA371002107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e7daa7f4d724686022514e009a99f37869fb9a65bf950060bf6bfb4dddf913. 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/HRA371002108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d3c3cb1fc3e3f4fcd4f4b5a2fd7050ba5ac4a6801d94631f151beafdefb04c. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/HRA371002110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320d6ae9cc1379bb03026c4709cea19a3f6b847bd2e637d571f1e2347a4ce634. 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/HRA371002114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69a63677a53c94385845ff5cbe98153ba4d7262a874a9d085a610405c75f63b. 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/HRA371002116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb357a421247c924bdbf7cb5a25a4e70414b0724ae2cc89520c81de9b53b0a2. 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/HRA371002105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342638125564db15829cc1838b4c98f40a804ee1c8d9a83502c7e244f141f5e9. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/HRA371002109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4042329a11a1d1d4add9b1251a69039513cacf2481910bf9478424465b597925. 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/HRA371002111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c191cbb097cd143810aca1306532a6e6bd88a98b57c22e8db45530091ddf81. 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/HRA371002112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x673f3069f39b94b31624a0430a4b7b4fdf7ed74f1a257bba58f04ac4d56b5b01. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/HRA371002115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6263403d51e93e997b9595fc8e3f6ecaf8dc02001992dde876991de3e63835e1. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/HRA041990342.
In The Land Of Blood And Honey (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ddc1456fd51eb86132378fe4d0aa83b0458d64bb3c0b496fa21532244124ec. 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/US3M51213310.