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 0xbda8017afd6cd0bcc5fea6ed6d6fb34d7045e662c5d74ab9899d54ea74c6024a. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c040e7e6-6941-420f-aed6-582a8e55a2c2.json and https://artists.proofprofile.net/proofs/artist/c040e7e6-6941-420f-aed6-582a8e55a2c2.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 0x3e8d5a84ee4ddc618c1f49bc34f79718d8e36810ec9dfe037c7bb414a4fc96e3. 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/QZHN72454269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609f51d95085a01ff3032f023b79a6be7a2e34438d77ddae2a6c6e22fa7b6c36. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZHN72454270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568a7e404a6849c68a288ea760f16c7512f131fc0c700b893a6e03c6498738de. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZRP42436708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800d9ba16fcb0cc07a8b85b9060d59cebac3dbceb13ae0c203d2bafdce03fbed. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/QZWFL2422863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6665d4dbe3bfc649c937be0d90042d5379ea7da00c76e0e0049826e61a5cb6b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:10:55Z), 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/QZWFL2422864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbedc9a0d5908f7b7d6586e611df9061152d108ad7e799f6deb6229b02417e0e6. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:43:30Z), 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/QZZ7U2431037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf58778f16de05f2892d82a62708357e673375de1cb8bdf202c2fa6ebdef3849. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZDA62565595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85aefa46edde173cd862a1ab6952c87e3c767b14da7c2ddf8ce286aed6655e45. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZDA62565596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3bc536cd47a24fa4801624ca2c2c80b0908de768abc2d0583b71a5038c9147. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZNWX2561855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fbd2fb9f4c6558622d431a34690523fee6c1db9dc53bafa683fe14becaf64d5. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZNWX2561856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83fc653508fe3e70ebc4aa730b8397ce3465ea476fd5b3836d928a67142c1b39. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZNWY2553552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58da49d82d04314b89276dd9839b53b6d687a638169f01c23a3963d136e66466. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZNWY2553553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6bc17908655ee6abb28641f4edd348721a6ecc67623d3e3f94e7f205ac5dcb. 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/QZNWY2559806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb297f67cdf96ba624706fe838b1b7912bd12800d54fec50f1fd5d81b7a0d44. 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/QZNWY2559807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd602aaa32eb5ea40c95373a029e26163802008324df1c62bceb88bc2cb01f5. 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/QZPLS2526791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e88e8c2c0dd3c20c837bb98dc8ba3a24c4f227797eef5d1f5cb87dd32a8f18. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZPLS2526792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bfcd5d59ec094713f83fb3210dc5a3b533f3bfa23b559b4256ee8877459fce2. 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/QZRP42512378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a61e7019cf0c4a25023f24b35edd364a14751f654b93882ca38fadac331739. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/QZRP42512379.