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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b44a0b5a92614824a6a05873adaf7aceacaf33b1af1b13b63ddfbc7b530d4a9. 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/7b203a91-3878-43be-a6d2-b687ef5eb026.json and https://artists.proofprofile.net/proofs/artist/7b203a91-3878-43be-a6d2-b687ef5eb026.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Woman You Made Me (feat. Cold Diamond & Mink)
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8df69faa587b986734260c673c28a2f20a303ae13709d30193757ed0c59fca. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T08:37:45Z), 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/FITI31900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e33b192aa6ff6f3f8d433e63a01f5380c386bd9a902fac6160d04988814519a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FITI31900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a87cf8145bde1d504536e17db1d637fe75f7a948e1675fdf6e254cf3611d69. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/FITI31900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b86f6c36d10640e690625d9e25cf99955e8085d59de75ed7092eea951c9814b. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/FITI31900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb65e0dd3d9a6c7b977e8511454f420f2317404f69347363d1b822529eaeecbf. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/FITI31900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3888d6022ebdbcf116a95993c2ffb00618bd68a7c0ce2836323b0feef570087d. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FITI31900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0023daeae1562c68201041758526e0d36fb2878d5322a9f911f9567937bef761. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/USHM22553252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00eb4d7109c9dfe6592ca59c115ea5333692195472d4e15bd1d22f35c0b518c. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/USHM22553253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581b7fe8962846d321d25b5873a369cbf468003c5448e6ebf962a6957e00522d. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/UKQYQ1800134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80011f9019aa6ecd14d57156f005be02f23974dfeaf98d5af22fb0b82cc2b813. 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/USHM82591369.
Colemine Records Presents: Brighter Days Ahead
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76255c6a6b0a6c70221d1f519d02d71797f219e16693ceaeb051354416e304da. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/QZDMQ2020101.