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 0xc4c8bbf9d5ba287f085751e7f9da78a0249172e15d00e8c3acfc6fbe059dc943. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bec6cc57-093d-4d3c-adfa-31589123d06b.json and https://artists.proofprofile.net/proofs/artist/bec6cc57-093d-4d3c-adfa-31589123d06b.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 0x0a998773ca5c0728148ef71609cd7522c4319a7e8aa3abf1d4bdf477abc40235. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DGA062072714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952cdaf0b4e60b4c3f3271f0b4d945cf3324345adc63aca64789f64b5ece07c2. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/DGA062072716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8f37302dfb0e4328c019e4e8ea6966e7403531fcf6bbfb8566dcaff9ab8b73. 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/DGA062072720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6b778a6b92b3a20a07d19854a54ed9d4220860c51d3cce5e5ab83e406de2f1. 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/FRX282026804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc088848a5251ee81a059f0e5119198c4c16119863e277001fb45c3b1c04bb2. 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/FRX282026805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a21810bcf8051354fa753f3b84d6fd3f420d704c9826b8c4163600cb3508a48. 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/FRX282026806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605fc7760985f535d8b21cbbe15ff86916c56fa12ccf1dc81dfbdf2d1a06c7e5. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/FRX872073396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726e67b3a81f01f2744620d4629f2e625e84b1ee38db4efbac9bd081e66e3f23. 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/FR26V2013989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3f69495cd7130dfb77ffd921715d6a3b4246e77ab094283f0eaa81e1d03b8b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FR10S2190264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15285262bcbbda8e83341aaa139b923bc3868eab108c2b4af81f34886c1fda4d. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/FR10S2223441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeaaa56e29a08957214cd3cd96e14984ace3620139213d2c687cfab6363b8e21. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/UAEO12300097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605fc7760985f535d8b21cbbe15ff86916c56fa12ccf1dc81dfbdf2d1a06c7e5. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/FRX872073396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0815255ae23a41552d57664c35322c2f7b993896b5edb376e4dfadf70c5e0d. 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/FRX872179279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbca84acc5917ad77b8a8734bf54f68362846ebf2a51ddbbaf6fe9e2b746f7a3. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:15:41Z), 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/UAEO12300136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca96f3dab1978d42783497fe8920fcebf5e948c15ada1a04a84a93a7fb67857b. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/UAEO12400054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a9f403c50ac75c685ffb3d508dc85dcfdcca6d4c5cec2cebc3c891b298289e. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:45:49Z), 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/UAEO12400213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b77a00c6a5ef15e1f79b09c2c07cb26572b513f8067634063aa2ece4af63b0d. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/UAEO12400306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0af25b8b98796b141baa7ee4ca0930e3964500f2811e17efa66d8f7ea4d3505. 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/PLC070711003.