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 0xd652f1f93e8d114c5e3df3bc7b916b4ba6363d6cc62793270697aceca550d442. 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/a14a3888-56a7-481f-8914-76acb28bab01.json and https://artists.proofprofile.net/proofs/artist/a14a3888-56a7-481f-8914-76acb28bab01.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 0x96106552f885288b330185729113a7af44f62fda9af49f0aef94c3ae77e97aff. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/AUMEV2429919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf82f0f6fb0c8aa755a0478cf18dc2628b57631ddade022bda383d7261280c3. 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/AUMEV2429918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a05b2a5edfd2aae8b3294f2f2bc0c1525658548ea118a269974de8101acd022. 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/AUMEV2420810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1432bcd4153f2006caffbe1e575f50e272726429e9a175e47f402d1be9f7a04c. 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/AUMEV2407160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155ec07c940dc845caa7473dd10e9e11899929e84f659924e7eeae04e988bbf5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/AUMEV2410023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc5daa4fed1a4aae689c5477b46e16fdb5a3467c65f2c41fbf3164a98881b64. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/AUMEV2416208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247a130ebbeb73a7834827fa76b13a863686e682a80c3f0bc1f44d02deedde6a. 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/AUMEV2405685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba2ede4245d7aaf5a25ed33ad535c4a8b32020cadd0e87fc0281acd18dcdb24. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/AUMEV2402556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c0beeaaa7079245238b545be1674a1da3568d5ae6223a52ca9fb6b84bf1d75. 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/AUMEV2405680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760f89dcc3f188d02fcf35de83859c32ae372c0366393df0b2b65d3fdba36330. 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/AUGBT2310489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533e5e8f8fe6d4fbf68e46964c1494f854c03ef32b2cc1a0e8eece47c414dcba. 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/AUGBT2354220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadfca0ca9480fd1c97eb49e85d1fcbc7a315c4a754c410499939a156ac50d7c6. 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/QMFMG2332635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdebd8a6d56e0b70a1b1fafa054df61c7c580931e48eb57e5baad4aaad9ba952. 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/AUGBT2310488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7231365cb9944c51312c89431b247e5ab3e5a3b386ee7db63e3487b0fd2cf628. 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/AUMEV2358900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf48618c13e6f9f24c9d275029c3a87f2e3e6cda8ddd302542e392259024435. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/AUMEV2344702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6993a5e26c4acef244370d64f2d99f042d0a94bf356b116e463c325246d253dc. 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/AUMEV2359325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e492913d6a1d585e47dca7d74c5ea172e3e44fc21837c29998fa1b8c0405e9. 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/AUGBT2301024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174c31270ccc9de1bf1ffad59a21f18aa31f4144515a3a527e500a7da12ff60f. 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/AUMEV2364866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d09a77ed3d079a131c27f436710a6cac00b5fe7b9437b47f39bc32d0bc9510. 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/QZNWS2356049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb47fe046fd08346b0ad960ec50ad309d2089868401968d2b13c81662d501555. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/AUMEV2356400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a18532e641f2aba1a5c134db70ebe47dbf5d61516f697445c3099cf86d1b9ec. 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/AUMEV2350407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b10647cbe2e6f6a68516f68308b3f8c0b8d19902edaba882ec8086f087b79fe. 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/QZDA72351719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4153a86aa13fac73f484ebdb135ada3e87d93839f71b7b9e476f656def9290. 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/AUMEV2324096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fcf0ab6283d932a38371f599ee360cb2fdd17c709e1c92da5e7dbed6001b4ac. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZDA72353443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaff0ab4c2bc03976bdf11a56635635ad47dc034129db88a89f99f177885a057. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/AUMEV2309551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c8a64748cdbd4ad56fc83fb45052137171617d53118b08d10e4251719fcb2b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZDA72359245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf8423c54c50fc76fc62bec226fcbf30f3eeb8d54b3f5e36a85610264dbb518. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/AUMEV2305454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90a3a6e1cf89bf86aa34e0522e96a13a4721566108348be1a0ab75d14f79214. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZDA72358309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6daee39d212343dcdcc527dd954de45c0ee7baba73dca08928793c160a84db. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZFZ22344693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a4d75bf6e7e1356a55fc90aa4851abd28dec63b97dc8161961aa97baffbaf1. 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/AUMEV2300799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4d7f69b9c503ad9192f0f82d758ebb1bbae1e768d0000e0e1a1bcb7d211274. 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/AUMEV2306492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8573a60c88e84285477581d422111386265e7c3d37e6064be8d59377115f09. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/AUMEV2316973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825ae7df90412735db9a7d7682e4b72ac5d44914c1600f5a28eddd29b7367138. 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/AUGBT2238325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6510c85312ffa9a59a4bc7f6bbb4874ae5ae7245c3e3d34fa76d6438733ac7. 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/QZTB22237195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4507031111bd5afac9529e9715cb217917cc03f2cb8d7b9d79d0e89659c4d06. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/AUGBT2221863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf9fbab709ee5d3fe674225aa3f429a98cf8f61459190c71909b5abdfa28ca9. 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/QZTAU2253102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91851180dbcf607eaa87edecd6bc4f3fc8f20629539f5db49a74e905ae22e521. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/AUGBT2218256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb52a6e3d66dd541482f11fdae86cb2596b6dbb0c83ed61c6b3fd00f810c066f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/AUGBT2218259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda91fc3759485614c66742f278db1a7a67b0a3f383d598eccf7a6b21a61afb0f. 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/AUGBT2224384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208fca2209766da442afd4fd1a7d4f8847edd7608c3695c2396413099e23f63f. 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/AUGBT2218257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa13b6f6bea56b92d09fb446ffb597f44c80e2c59c6a07a407c10a86fbb74e6. 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/QZPLS2284701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bcd149c01582bea7489ec382ccfd40041db5235ea86da202390594282ae5316. 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/QZK6J2298164.