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 0x776e29151322b3abb0d8902f58fc231ef42723e9d88749135dcb10567196ff8a. 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/a713ea8f-e9b0-4a60-995b-43c62761436b.json and https://artists.proofprofile.net/proofs/artist/a713ea8f-e9b0-4a60-995b-43c62761436b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Deus Me Fez Para a Sua Glória: Canções Baseadas No Catecismo De Westminster
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 0x8b57781363b7b6d38bdf0b0d93fabbb98f92aa87cc4747b322ae385af891413e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:25:52Z), 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/US7VG1695775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b9ecc10c3ffc7fe40820acdb1f40248601418b24598b5501487d22bb693e17. 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/US7VG1695776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7362dfd78ab016a7d2125efd2b5b55fb102df05cc7a307ed5e345792d666eb6b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:22:22Z), 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/US7VG1695777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3419792ecc0dab54454cc89615b77e482034970ad6fa04ccc81f2bdfe623ff4b. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/US7VG1695778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b733ebef5079c84a6bcf339afd9535db2cb99c9b854f5c2c40b92cae8556089. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/US7VG1695779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a5def01ffa6a2402121f65b95312040e6b2145faaf811a26bf2e02fb24de97. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:57:09Z), 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/US7VG1695780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae696c0bcec947211b39b1b2764ed81e269757a1a957b6685a3aefc09646a630. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/US7VG1695781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee737b1f53ec4a3175fd53cedf06c463a8a0acb1ce2f15a41e469e236f20182. 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/US7VG1695782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d466c28b1485502b45ce32d0a10780e0cd5eaecc748c605c9610a04b38a192. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/US7VG1695783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31104fa602794b979e9c3e2d99c26c8abab9d55f3ef735395db37c44a974aa2f. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/US7VG1695784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f36606f291ba0a250d5890d35ae2edfec58ab48fc40e51ff2aa3603db083a2. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/US7VG1695785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4d1cc5cf139d5a9f975c206c29cdd8deb77968bad50f4c0c651a96decb517a. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/US7VG1695787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e464b0360b6ee9112c0d8f5e3eb4b9086bf9b63befca4796189753096d9492. 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/US7VG1695788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1023dd8845b20c5e04afbbf35ab41b1778039fa203450092623f52f08d6cb72e. 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/US7VG1695789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4058607dfe48ce2258f41a9f15e03c33517f493f49b340f9861b9e63580c91. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/US7VG1695790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d797847ec94d84d5464344d291b350c286e887eac7ecf2ce61bdbc6e9a81ce. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/US7VG1695791.