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 0x02d7ed5ab6b2ca417bbf64b3dceacab3e430dc9cf7cc6d46068e1d7e694c4a24. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/454ee26b-9508-42c9-beec-9fe4311cb243.json and https://artists.proofprofile.net/proofs/artist/454ee26b-9508-42c9-beec-9fe4311cb243.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 0x279e1cce79dfc8f8671ccc50ee9272fda6a7592168f90d7bfd5cff5575f34697. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QZMZ92153972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c900076fe22074af0274a511c3da43e36917bff456b9d345fc0783f94fa7e82. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QZMZ92153974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8636e5081e76b6639af8874b8376f8a2ea54d83abfe327d33d56f904a099df1. 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/QZMZ92153976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d8dc85579c545ec78d83e5b8485dee47ede49c3225c0d72c6b6d6690d6783d. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:08:27Z), 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/QZMZ92153977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161986390ffc7aeed7804cdc9f224d32bb0ffdb1baf5511f172d928a0c4f24f0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNJW2130896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e4b357b3d07f64618f82cc659a05740cb3a8af1140cdddb1eefff1fc332421. 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/QZNJX2296269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa184b4ff7099441d966d707221cee64706d2e77d465c46269bab86087242a21a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTPX2219109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7680f21c232187c9c1669240a9954da752009d788d8160e408f5c4da7a6d03a. 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/QZGLS2385338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68dfe144bde77209b223dc0681f0bf4211f3699b5332dff83a3522cd174d6e4. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZGLS2393611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce49f8685d8d8bb54eac027ad735d0c07f4662548b5925483b4142810101ef2. 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/QZGLS2393612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0345aff0041aa4a5a7c1287785fadef08d918def5863677ef1fc428bf6f4a0a2. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZGLS2393613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c473eb19ccdad20a3ddf19d787e51f6f6cb0e0e055b8516daf52b9b2a9f21b. 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/QZGLS2393614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73c26edd8288e8cc73ce7e147c3519e54642f46122ee51303f752fda4f40e7a. 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/QZGLS2393615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e57c5248f1cd2c950462e1b3c50e4f59ce4c6d5bf805e6fc307fc15db1fb90. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZGLS2393616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4d6371468185b3315c39d68b3bd1ff3baec013f0837e14d3bbdfeff84c7995. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZGLS2393617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5caa8dc7f4b6282b6fb0952e7c00fcf9924b6a8c49a122dd81a74fe3f5674a. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZGLS2393621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977e7a608799534ab234e033dc5f46a723be7b0b283ac249ecf84728d9737048. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QZGLS2393618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40a6210ac8d9e8e88428c26ff9d8bb1819586c70e3d818b0111d73f20730fa5. 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/QZGLS2393622.