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 0x7a61f8c5890bab0199f941b7378d656e2c6d6f54c44a14de0b1b0e9e749864f1. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/253193ef-a589-49ff-be00-fee1528e6a39.json and https://artists.proofprofile.net/proofs/artist/253193ef-a589-49ff-be00-fee1528e6a39.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 0xa119c009961565edbf0145cf9a11b44eb19aae3d481b3dbb74801398c5a61924. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCABH1259165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c299f87d869e2b9b3f99d994d605e4b70904890a302b1a659927c6eb2f11df. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/TCABH1259168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c7ad1aa3737915b41a7784c40f2b60ba00bfc5b19a09688ec69fa739a01ee1. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:55:46Z), 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/TCABH1259169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed644904a6e8affdf01ac8d16f2def780bf005b060e14bd1d2edd82e3ec7516. 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/TCABH1259175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ea53ea8f9be386236507442f02ce3b0f74e5e88694f05ed73341347931493a. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:32:55Z), 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/TCABH1259176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aab80f00e911dd30774ab4c12bd993326f963c23f72c3f66398abec4019c760. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/TCABH1259185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7cdf6edbb2b8d2fe11d3ab7cfb91d2381be7aa3e632926f6df4a8653921256. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/TCABM1339976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c05934f45b4cb8e71374494c7091d5a66533ed938f45943c65b8551a6a6471. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCABN1390083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac750e9c638ec12bf741d00ef58f0ee24b404c0eb5da6dd38c2d7083b4ef2e1. 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/TCABN1390087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0bba0dbb849cdafee13b83a0149ec3e18624e1be8d7d2e64b1fa944fef6a8d3. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCABN1390089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd993fadba0a08dcc7e327f166e11579d7f48d04157fed0f39c6b7132df5b7e0. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/TCABN1390091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf8a5190c80e1ef1124928b23dcd779f4de23a2d06ece122bb1d2f3c1a8cd61. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:28:47Z), 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/TCABN1390093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd7e6e060c415768f8ecd88b26d83b482320415e23b0afcdda95bd4750caba6d. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/TCABK1206812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fbe3c257196d35efcdc32981c97656167df32a5311dfa7b5f7a13b8d8c43ca5. 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/TCABK1206814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89375ba5662525b78080741912671f72fa304e122bd66baa3fc831b89c28d931. 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/TCABK1206818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9f8e07811e7fad0360c9f8cb92d9ad02ed6cba119089876543de2623db60d1. 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/TCABK1206822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47989f8926446c5505be9efcbeb831172e84553669fa47eee487c27abfcd928d. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:09:13Z), 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/TCABK1206824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f7133844de7c0a35393a653d38b10bc0d4a75689bb3c0001dbb12a94ce3d34. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCABK1206827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec7c14a6a12a0f3f637d21e2fa22def5c87ed9044562fc1bf8e239c198eefbc. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCACG1583786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11cd268df16a20f0f2a0bdedd18f0383cd12ee4d5b531070839bb87229a98663. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCACG1583787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1c69ce2749805e08cadfe588853fd7e7af64610d7e54bacebd790426e479d0. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/TCAFA2072810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc864fe351624e4a9aa5924ab446d219b81e8ece3cd90d773a8a517ab5d861127. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:56:17Z), 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/TCAFA2072789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c7b04cf3cb0ea1d8da3c4a586988bedd959039524e7300a1d15be2381cd7f8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAFA2072777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe189881adac6ab6152697ca6b6d86918230e32b98296b509bb30354f9a35eaa2. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TCAFA2072776.