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 0x3fa524c62648d0713f629e5ad9b8a7466497e60a6ebeff29d27a3b5138c777e4. 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/4cb65b81-5a88-47c2-9052-d2b50339bc6c.json and https://artists.proofprofile.net/proofs/artist/4cb65b81-5a88-47c2-9052-d2b50339bc6c.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 0xd6b8ef8f50a34507502581bceb557787eabd0703c339fc0a8a01ea29fc304f41. 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/SMRUS0060724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e506896cb61a79bff2213b4f922c78d452f6f5fa9727f5baccee334f64e781. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/SMRUS0061011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d32925fd65fc8acee7641bc9e31737041f54e690183bda08b39f4e93f55b602. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/SMRUS0061375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022d92c0753373a3125cde8b5274006f19d39853b08a109e1042b194fa220e43. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SMRUS0061378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca7ff86cfc3a810af95e701d799600d50656881cdd13f7bdd1fc94aa845ac76. 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/SMRUS0061379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6b273565fe4e98432c05a6566edfb67f134e60cfa8a44ff90d671524031986. 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/SMRUS0061381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda591a1aeb7fd60c712bc257b9cc80db2134be37abdad23ec2a54ee21e9652c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SMRUS0061775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x951c76fab93e0a476b0e6535b1942befe826acb3ec46dd056ac70d47330beb9d. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/SMRUS0061889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e54801e5edd65c8d57dcb74d51d68acff074593a403037a1b779c4c12fcf0bb. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/SMRUS0061891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc340772e85572525988a2120c0c8cdd5e01ae374629cd4819f82fc08665030d. 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/SMRUS0061892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5419f65eda56b48ae49f5cc2031a6f9c968a086eef6590ec69d69c2db428349. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/SMRUS0061895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43753e7af79f7fdca6d8b582878527882fecdf951aa74ea43aa6da1b4fcc5678. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:22:14Z), 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/SMRUS0062312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0812d61f82c3db8ca1d322f6057770c5d238387b48d2e4d872be7d44bdaccf. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SMRUS0062972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4da526d6cb7aedfcf8f97ad973aeef7aed93218f7e8eca3f9e2a42a88a1d4a2. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/SMRUS0063280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41faf5caae7e46b7abd2a8ab00d76bbeadb856e0b05e72c86e9a2a30c51eda8. 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/SMRUS0063281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d52fb4c4aecc7be234031590462f3791f9ab014dc1e89e7fff669aebdb1aaf. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/SMRUS0063283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7369f70ea830e69e7e7567974bdd53e239bcc7eccf093a3c6b1a882fffa3ef30. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:56:19Z), 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/SMRUS0064181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5a393de586bd5baefb1bf3c47bd784f701941010d4da89f710103b5810c8cd. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SMRUS0066939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a966e5c18d2c912b3b2821472bc6ce573201a82b378a04fdcf6deb4fcde64f. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/SMRUS0067252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a1954cb4c417b908d82be5a153a8d68044e2e13fe72aec0ebc2d8d7d7e4d4d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SMRUS0068600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e347c2a98291cf00931da28c1fb36f8bc36cad374149bef510232c075fa62f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SMRUS0071782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65755c05052c74afb59b76079268c687fde86b2fe4bd9ffbde4b2598f484acd0. 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/SMRUS0071778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9732591e87056552fae20ad92bf87c59df91848bad3370229bdb2e4f4e77c896. 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/SMRUS0071779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a0a3400c006578ea7359bb9e0863c73ecc12abc57f6ba8f8cb3cba7ad3fa3b. 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/SMRUS0071780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e347c2a98291cf00931da28c1fb36f8bc36cad374149bef510232c075fa62f. 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/SMRUS0071782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40773643356cca298604d6629688f27d90a0c7fd536ca482966a785e9c1a908c. 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/SMRUS0071785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18523a5d010c13b6f8c568d5d474f9dfc483a784ebac66ecc6d0072f5d709cb8. 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/SMRUS0071786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91abb24887f4c04a01208ed1b1f87ffb80afe2687e5db7d03c37e70cb3d25e9. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/RUA1D2235163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f85f5fa72f615046ce64f6eeb2962cec350ebdd41982970175c6c6b54fe20b. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:21:20Z), 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/SMRUS0074773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e46306b22cd758cedcd9f405f32acba4afcf217a74e97c03b19a04daec9710. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/SMRUS0074927.