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 0xa4b93fbe79d5d94fc550408aa60f0da81668f87d492a2975ec2ee44e6eed7814. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/521af7d7-306f-402c-a7cb-0a23d84820c1.json and https://artists.proofprofile.net/proofs/artist/521af7d7-306f-402c-a7cb-0a23d84820c1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
"Keep On Climbing" We've Gotta Go Higher
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 0x563f6afa3884ae2bf397cfc249486608efb1e0ad0d52c283702fb173396df34b. 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/USMR51042116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7285893a8f196d6bb5033920dbdc45bb27750654f19e2f77be1730acc2053a39. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USMR50440659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9572cd241adc17ea03e35a7bbdfac96536261ee9e0aaa66c3d2a2f77ec9dc83a. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USMR50440662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07b12523cea42f545af4bee47f7ed002cac2a217af7ed9f3c2ba0bb7bcd04f0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USMR50440663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32990a2b61a5c004dc2b3fe51c547804dbc13a9802e5c13980176274eeff81b. 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/USMR50440664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9d32663b5fe5f82400716af4314f69f94f34e03762a0861007e40628ab1e88. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USMR50440641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0caec35cc9dbe9fd2a01ebf3bd96ba48a8bf26241a9151693f0dcfd437ba532. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USMR50440642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d4a4fdf92128573b72eb7a8ecc5c762eeb9328496764c91cf2738ac812a945. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T01:04:00Z), 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/USMR50440646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ded3e1727b3d492a20164e1f8bab596650758019d24023e493f9789eae131d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T12:12:37Z), 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/USMR50340074.