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 0xf2783759e8c03d226467699f631bfaf9eb82bc11f9af71185a753cce8aafd32d. 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/d3c1de6e-a03e-4a85-b2b6-b5f8a3015c80.json and https://artists.proofprofile.net/proofs/artist/d3c1de6e-a03e-4a85-b2b6-b5f8a3015c80.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 0x75cfd97a55229e57bb3a85e58ac0846a42f40575e675cb43d5fa18dec319cc44. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GXBDS2353562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332d4470155a23aa2d4238962cc7818c9e24936e5490473a2451646b22299097. 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/GXBDS2390539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9532a424651daebe000e9466d1b672177f705cf60bfb1ec44d1e2e2457fe8b1d. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/GXBDS2386525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcefbe2174c023c50b734ed8e064bc23407908522c96166d0a8f69e68248a5f52. 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/GXBDS2336441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1311004eaf928b3127f5443485ef7dee9590b76480eeb85242a2bd51ccf7486. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GXBDS2341919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873652284caa396755ec8d41efa6c58881d4a8ddde908d72feb0fe64bcbd658d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GXBDS2352804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27955b93cdc14ff84dc6a907fbc6b1730f17e29bc882cf7d9ad365376e674d4. 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/GXBDS2371041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2bd2af5bdfd7d2418017a9664b1da299388e4d919a29ec8c9f4af2204fd823. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:39:40Z), 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/GXBDS2388857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4502f718dae53f0a6de240acb1660a624789fb264f82b679870b26f25845e3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GXBDS2393911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3453bf074bd30f4bd05c6b24386c37ed6db968de826840fda93ac6352f5ae623. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GXBDS2326220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129ab80b3736cc767feb81323a72f8ab559c84a79cb7390d6e9d3fda46134f05. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GXBDS2320703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79acc178d1a39400d4b58aaa50511ed6a953c79798154bd6c3d7b38c7c42946d. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/GXBDS2380458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e471546182f614b0226f61dbf9819f41723489ff69828b66a6f0fcb14d3d99. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GXBDS2342111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67edf73070098d015796b99d4cc3f6df6a5d471a17f5e01b65f579d40980f031. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GXBDS2345255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c940bd0ec71e0fa883315e5e95b2977f6b9d04638410d7933b8d580fc788036. 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/GXBDS2379387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf12a75de82dbccde1460964c3d8e191f13b847d431240dc889e9078de5d8f2. 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/GXBDS2377171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598da125c672bfb7d79b017081c1fcfd069467c356fd8624a740af51244cd1ef. 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/GXBDS2327440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80eb06f62edda882dfc94d25f7518156c949beb43c7e50103ea9b501aacacd0. 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/GXBDS2338344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24bdf2a07fca1e9e3c7e22b0e56ddc0ace92f1b8a65fca9312f8189fcbc52b26. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/GXBDS2344168.
Barricades and Broken Dreams - An International Tribute to Conflict
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e4903ceebf1fddcc08b5373598eb2f4b9a7071f01b5bc727c9b8378d92e3b3. 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/USCHR1390932.