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 0x2e8aeab88b7196ece699e109063f78234eb62504ab8a161d6138b5e416bcaff1. 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/a272a96e-ef67-4c4f-b85a-fec8e6df9f70.json and https://artists.proofprofile.net/proofs/artist/a272a96e-ef67-4c4f-b85a-fec8e6df9f70.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 0x04de8b9b1af029fc1f54fee62309f2d8807fbd97cbd0aefc1d7c55b8825fb1a3. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FR6V82597695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ba2918879a3d42550f87a2c9c5ad6dd45ede307e12dfd4a0fe3e02ead49f8f. 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/FR6V82597696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6b58a85e3332baf4d3d44db9fda594764d0a6e3176378f8cefb846311a7ae5. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/FR6V82597699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ceb4c554cfeca6a3d0eea725491d17dce6612aad08ca2b05871dae94eb5418. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/FR6V82597701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bfe157cdece7f297c0cf73f61544b8e01c0529df95070b27760cc5f6005b1dd. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/FR6V82597703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb920d1250cdab9d21453543b270df673c26cb885e256f2290f166b78033678b5. 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/FR6V82597706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921ea173825b2f34f872c1d7a1a292f24c46a7ccb7b673e47433c4328c9c1393. 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/FR6V82597708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5ec993c2e246f8367188383e75f00ff851ac013ab556a906a42e388d3eff41. 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/FR6V82597709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d97f031b3130cc5a9b2f22144d5ff33c5c1593b51a2360510d3502afaa8a52. 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/FR6V80714537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81ce46fecccdae5e5a74a86478bcd33fabd53828e5919c7839795c62e32841a. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/FR6V80714538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3302fc7ea28d1d576278187714d4eb6633ffe4a7bfb5f4b51c2542089696962b. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:47:35Z), 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/FR6V80714539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3478cdc78dc311b4d4763be4e10ca2599be1171df62457dab071e0229a13d0e. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:03:13Z), 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/FR6V80714540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818fd288b9e2042f7b7e0901fcad98ca2c4a0ad24b5e4465170dc343374b3c59. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:58:17Z), 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/FR6V80714541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c68c897630262c8bef6dc8a27997d11e9f31a1f216ebf2389aefd195d35540a. 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/FR6V80714542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe376ab1f48e3792c861f5e1e482dc13cc42185db934239d7af8d06e9e0585c2d. 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/FR6V80714543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b647fd065ab34eaf5cd0dccfd036264bdc10fb566c5a8575d60532d7d26454. 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/FR6V80714544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8553e371851f72f2351eae9e4c71f6b3fcc227281efd0ce8fa60704d450e2081. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/FR6V80714545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13bbd99c2d4fd460b211f6b00f8cc584140be4b5693e92b267d675e4008af266. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR6V80714546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74ee747409c8113028267d1daf5105932b63efba7675186d2d89e1d568e1956. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR6V80714547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe916b6247818e352366a65e87f5743c7e70a0f9699c4a7e843b043212d75d9d7. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/FR6V80714548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35e3f420e5e3045786c256194b35c9dc4988b2e74fdc0b8a8dabbb1b52ce21c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR26V1506027.