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 0xebf5b5adbcf2e0064a4a8484ac9825802effc88b941ea25a9fb74a95b3a91304. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/23a177e1-131c-4ea2-bbf6-ea1f72912a5e.json and https://artists.proofprofile.net/proofs/artist/23a177e1-131c-4ea2-bbf6-ea1f72912a5e.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 0xcf11ec2284accfb9b9be8a5806773d02a7a13bad0e08adcd5dd21d75dea7b30d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR10S1693690.
Bodhu Beshe Konna Jokhon (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12fdf4811fbe396dca40ea053368340df3875c702af7bfc6c2ae5937e85817f8. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/FR59R1980227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9799e906d3979f6039e61588a8e24fe81f03805bd495b0c21580898570a26cf1. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FR96X1692021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78572445f689e12ccac2cdde4de9080b7eb0b6fbdb9c7d2dfbceadb178f778dd. 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/FR96X1692024.
Nantu Ghotok (30 Bangla Song Collection)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6704018f529b258f98e681b4a6560e594a4963287875b9b6821a2c1b31580401. 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/FR96X1692010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f07512a7f1fd677bc50121d75e7c32cf09174376de906ce9b4fdefba7712180. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR96X1692016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0419fb0d16fc52ba3f12bee9d143f636c923e91c27c250c4089cbe907dda11. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FR59R1708218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0cc9a7987924810e79f69aba2630907da4fe82785da3d4dd3e4fdf8e4d10e9b. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/FRX281740926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d04a7cbd8d9567b74b930939b5c7d2e83e17f978fce7bc484886fe9c86d86f1. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FR2X41839874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e993cdcdfd1f49b743803d09795223c76df4497d9edb1a01d963eaf08d62d4e. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:44:46Z), 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/FR2X41839875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6710610c2a659e9a809f7ec695c8cdfe09fdb34ab87f95123689c727217da2. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/FR2X41839876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d26e02dedc7a4788675e35a442544d9f2b764ef8de512c623eba784c63d8ef3. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FR2X41839878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ea329e0d4b57d97f519b3b2a808146608803cd5f5eeba73b1277ea7fa8c430. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/FR59R1895397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185364f366b815993d9805d0ebcf138027e5511a5308aa2313f15eb71ac75cc4. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:49:55Z), 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/FR59R1895398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4f4d8f8452b5b868555b2322db9116fde096d3cf920dbb38225d998b2e0ed2. 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/FR59R1895401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3eabebef2b20f4980e04d36744523d6da7fb8b7af5f2378c86abcfda44513d2. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FR96X2298241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a8be3b8dbcf69a78759b96b5b1883b053e9a61736816949ca8ce435f8f09e2. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/USDY41994850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc725483efdb0fc33565416b3e5d26080d7c61bdd33e3182f66a756e1d58fb65. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/FRX762059979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c838ff30f2c057dee52daf638e52dd303c5cccef1405f4d5adf44248db65692. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZMER2294251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c838ff30f2c057dee52daf638e52dd303c5cccef1405f4d5adf44248db65692. 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/QZMER2294251.
Tumi Amar Praner Shajan (Premer Jadukar)
Tumi Amar Premer Radhika (Premer Jadukar)
Kishor Kailla Poran Bondhu (Premer Jadukar)
Jotoi Dekhi Konna Tomay (Premer Jadukar)
Mala Porabo Kar Gole Go (Premer Jadukar)
Chabir Number Thik Na Hole Joubon Tala Khulbena
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dca0ef98d0676938d40d8f259bedf109685c3fd40acf80c4ab3d416fd773e5e. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:07:36Z), 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/FR96X2529020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e35495a2a008ef86f991fc331bd5bdfad2868c50323ed2af5cd8fc1ce6a4c82. 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/QZZ662492624.
Monpura (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c0393dff2ae86b102df579cadce8076b78a6b219c2e2b2ecea407069302f11. 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/CAA8G2100207.