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 0xd572ff0275e647ad0f309a0cff146d7bc27ffb84ddf294f142fd6883ba799b54. 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/cd569bc3-e1cc-474c-9edb-e0573194b5fa.json and https://artists.proofprofile.net/proofs/artist/cd569bc3-e1cc-474c-9edb-e0573194b5fa.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 0x72f0abcc559dd684af6bd5e1f5b091d363b7853892b78679426a7bf485bd487a. 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/KRA341211012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856ddf8a11623662c32d26a1a9d374fc0e1c3710c346b8c8e0e5acfe32a898dd. 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/KRA341211017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58851b855586098df7edd28aeb0b18e83aa9aabe3c45dec18c33f674212bbef. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:38:52Z), 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/KRA341211011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f0abcc559dd684af6bd5e1f5b091d363b7853892b78679426a7bf485bd487a. 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/KRA341211012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9217644e1201ecebe00d2e9a511b5c160ebcb6c678b3cb034d12ba95d099a3. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/KRA341211015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46f904a9a1c396c28ea63133e7b462f4f5c80708187a64276b1e17a62588028. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:56:57Z), 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/KRA341211016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8215e7ff792867346f7d9610dfe8da5cc4ac9b8fe751c91e15049fe52df2fba. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:04:22Z), 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/KRA341211026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7e70554d978137182e60474ffb15b27594afb7930e9fe32a5a8c63526cb293. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/KRA341211024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b11d55b5dd9a6a9be1416e49c7038aea642566f3fa91f9c3c241514bc6b0450. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/KRA341211022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dbe71d67cfc053d14feac826e54ef7df5c7740e4c68b4d6b36dc7d0f0390c2b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/KRA031205082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73da255bd9d0d55d640be257a1ef7c49777439a0b15d810cf24cb1c179cc779. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:01:21Z), 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/KRA031205083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc4e71a603ea77d4dd4c9d6ba97a5a9d4a820ed4bcdb40bdd706bb10a367c6b. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/KRD451802088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b6e0d28f6e14f2892929b40351c2191578d1d91d1bd522442efce052853adf. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:55:41Z), 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/KRA341211029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe3ef08867b1798a2d530fd7b178e656a42ad7c37ff1cc9b3316da3b18b0249. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/KRA341211031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa697b96b39d82006b10d20486e235ed9c99e6836f5ed189ad2b48440890388a. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/KRA341211032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ed74e84c3dc96790b162175e6c2da11feef9fd942f3726850fb0be9fe844a1. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:39:26Z), 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/KRA341211036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b6e0d28f6e14f2892929b40351c2191578d1d91d1bd522442efce052853adf. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/KRA341211029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe3ef08867b1798a2d530fd7b178e656a42ad7c37ff1cc9b3316da3b18b0249. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/KRA341211031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa697b96b39d82006b10d20486e235ed9c99e6836f5ed189ad2b48440890388a. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:57:08Z), 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/KRA341211032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ed74e84c3dc96790b162175e6c2da11feef9fd942f3726850fb0be9fe844a1. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/KRA341211036.