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 0xa7b7449de2108edd0b8cb45cd5f7f79c362a9c6c0ba6154ab38465c4baa716fd. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/214f09d0-634a-482a-8b4d-56cb55291624.json and https://artists.proofprofile.net/proofs/artist/214f09d0-634a-482a-8b4d-56cb55291624.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Gamelan Degung - Classical Music Of Sunda, West Java
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 0x13cd3d8055b0e59c8aad2d479ff63cbda534d5918b38a29f7cc9aefea5733fe0. 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/NLC199600295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361856c8586fa8363054bbe17ae4add6670887dda0c66be6910b14ed011564c1. 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/NLC199600296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2acf0958dfc166b0063c3fbc18df0620fbc3edee93b984da2cad4bda2843b1c. 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/NLC199600297.
Palsiun / Bungur - Kembang Bungur / Reumbeuy Bandung
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7587da5bd0a09867ecd51a16387973389157cb1fcd1082aab39adf3f86c6a025. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/NLC199600298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee78aa1be93393aa5241ec918116e0200f86530c5550c2f3fb66942d6f027c5f. 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/NLC199600299.
Sangkur Ratu / Kulu-Kulu Gancang - Kamelang
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea6653fbf8b96c020bd2f2b05a09b4b6138d6e50d47a9c85de0819f136aa984. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/NLC199600300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ecf0f7c1470e825779c233cb6bcd240debc668c0e0256df963cb0f43cd71d34. 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/NLC199600301.
Tembang Sunda: Classical Music from West Java, Indonesia
Papatet / Rajamantri / Mupu kembang - picking flowers / Toropongan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fcb5f03222cadda80551a557c9bfdaa79c7b3f486fa9255269102c21760e1a3. 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/DEA749611077.
Nataan gunung / Bulan tumanggal - new moon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713c66cd405b44a335a2246c9bbe3693dbf2663e15fb6c381ae6e62933362604. 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/DEA749611078.
Laras Sorog: Sedih Pati, Panambih: Panyiptaan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd957a1e8b9cb4fc5e2c67d4c18c3b8567bc74b911be328613e9713a81879d0. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/IDA881914532.
Laras Pelog: Tali Rasa, Panambih: Panglipur
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a824ce657d3bc8f535cccd8d9f34d9652e4df0b3a7b252275bfb0501f8f376. 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/IDA881914533.
Laras Pelog: Sedih Asih, Panambih: Dengkleung
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1ba38f5072598737431007c6485ec0295c8b081d6c18a1c84e6e3789aeb442. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/IDA881914534.
Laras Salendro: Garutan, Panambih: Pangantian
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2357d13fe9ceba2d87f68dd774fe7d72e455763599871f030d3b655fb0531b58. 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/IDA881914535.
Laras Pelog: Gunung Sari, Panambih: Karang Sari
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29fbfe97cc4e2f62d6d29a2119cd9ede52d85c8d7ae72bba4425d63b47b93a68. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/IDA881914536.
Laras Salendro: Bajigjag, Panambih: Macan Ucul
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91780eb1e264ec6afdc31401579caebcfb43b2c21da5000ce205e6ca72f8c40a. 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/IDA881914537.
Laras Sorog: Sinom Bungur, Panambih: Panungtungan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ccc45ced499acefbb95013890ea9e5a4f576cedad3037cb331b5021bda4290f. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/IDA881914538.
Laras Sorog: Jeruk Manis, Panambih: Panghegar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea362ac265580a6e105812ff0ea84ae650947afa12c8917b7e81241dbfc1bd6c. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/IDA881914539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3afbe30c0f062e470b01e6ca568f33a371c07379a926b5278f985fe3e6e7328b. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/IDA881914540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa328e6d634606f4347ffb24b1433ef4625d99c31c5d7adf4b8614023d3b816d4. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/IDA172222116.
Sisters: Women's Music from Celestial Harmonies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57a3c65b290b3b6fde80cf72bad44267d2f9e1096b067e7199bb89809028997. 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/DEA749510701.
Nu tuong xuat quan - Female Generals Dispatching Their Troops
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03cf86633cd418b3e4fd344cb49d7753a002f3b1ece06fc4f2047d854384e77. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/DEA749510613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92ca50f1c28d25bf8e893d7d25e272b286807f1dec9e9085517fa461ea66ee8. 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/DEA748930192.
The Devil's Suggestion - O You Who Are Illumined, o tu illustrata
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c1845e79942c11bd8f9a02feb8c6d1790949930a90d665e15a56d3a5fda032. 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/DEA749611055.
Indonesia: Authentic Music from Celestial Harmonies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d5512882e501da85817a1f28d78fbe8d1951e152fa76f8e92b7750cf1966d5. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/DEA749711100.
Ceurik rahwana, (Rahwana weeps), Kulu-kulu bem / West Java
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1d285cef369732239e34233405c35ec7cfb6c18fbc61f6ac08fde7aab3992f. 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/DEA749611083.