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 0xd0743c542c3a8c4f1455cdd8e82225ae2c3980cd185c2b8df595afc57efaff34. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7fe30db3-55d6-4926-9c0d-343202cd5b3e.json and https://artists.proofprofile.net/proofs/artist/7fe30db3-55d6-4926-9c0d-343202cd5b3e.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 0x05ae11273245939c9bbe135ac726bc6c300d255be2c25192a1c35c36e721449b. 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/QZQ4X2400160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6e0cea6f33cfd04a8da0b0c52382e605d8d3b7d08b110bd258d44c7496341a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZQ4X2400167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f509d2d3e2e2fe0897bb99bea44a2760a126ecdb883c41657bd1649bafe9e3. 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/QZQ4X2400158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6d8b720a55c2fef1ba3557798eb0bbe0f50b7c2c1c2d789402c6f5f099587b. 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/USLZJ2410547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7657216b5457deaf487e85ce3a14ec7417d47bbb372a1ae4f9c13d63f2d806. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ5FN2416959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde2b16244f6bdc33897faea3631c27258131a9a8d42dfed1ccec4dcac86d67a. 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/QZWDE2323708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758c348068e969f9eb7ad584c43e3fd4533e5ff849651fb1f920f44092750fbc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZWDD2364167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f351c5cf5bf5cc1d11f95f66b258f0783c19b55cbdf1fc26ea131006efb48fe. 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/QZWDD2336927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f0616597a4695c0731ff5a6986aa9844ffe85f9a4f3eeaad7d18e6b9d60cf7. 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/QZNWT2369924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ce3ed9757175f70c6262cfa273a1ebf93e8136f780e82e443a9af87ba10e8d. 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/QZHNA2352940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5474e0e9d2566164e64fe3bed83e61152095fd917e151b4c2e7391a5e9e04247. 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/TCAJO2588210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f55b5dde9201b7bbb5c2bb89c5f8df77f4d5403f7ccefda144c4c7193a98011. 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/FR59R2561034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44541bfc9fd130112e407ea10dcda80bb048f10d7158d19eac6e69ac7f272765. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBRKQ2525936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d660bd436ab68dec650f2c159cf9bcf41f60fb6dc7017a0638e1aacadd0ab0. 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/FR2X42583802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1021ea538f58fdef6bfab3f7a66da9e433b659eeaacdc6645661428fed912008. 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/QZQ4X2400404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267006d789b0650cf8ad438782270a0f491f7ffe5b5c93837b3a784eeeee3f65. 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/QZTBC2377997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f0616597a4695c0731ff5a6986aa9844ffe85f9a4f3eeaad7d18e6b9d60cf7. 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/QZNWT2369924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfd9d434baf63a506b63bca90040dd8db7f72ed2711fbb853d83b256747f497. 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/TCAHO2354717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b6eddc0fc157a81a48563bd6bc4d0e3b977d0067a701ec565d596bcc13b3cd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZZEC2322996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267006d789b0650cf8ad438782270a0f491f7ffe5b5c93837b3a784eeeee3f65. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTBC2377997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf722ec937aa4e77814f14e0d37e1bc991c053e23f83ebfc75f9725edef6806ca. 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/QZQ4X2400270.