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 0xc22ed49306048f7a9823417512f087738e01062e48a34d852eb07598937e7367. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1fc14bb8-85b1-431d-a481-eceee68b97c6.json and https://artists.proofprofile.net/proofs/artist/1fc14bb8-85b1-431d-a481-eceee68b97c6.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 0x01a78b6060b35768bb03b44e790b426afa936546f2ce5a99d5345bec3d0d6d80. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/BR1J31100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f84b5b85d1c43b9823c5a50fee1ce743ac8a8db197f55e5fdadf686ec236cfb. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/BR1J31100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80da46298da7269b53f03a0a1655451c3ab54c65b37cdd4f9ede9316027faecc. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/BRSIC1300059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219a416dd031459ac527afb79696621d049c7ff2a48be08ad7171ba7e4b2b7f2. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/BRSIC1300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5bf68bcd99487bf261198cc50746264439f10548e5ddac9bd58b3727f08c170. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/BRSIC1300061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac435b2e1bc4703ca76f0974f668d0710aaccbcfeab26e24290ccdff0425374a. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BRSIC1300064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4fba1667e4f7aeedc322c5d885c5ca459ceafdc0f4995d02031c1db3d33009. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:51:18Z), 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/BRSIC1300067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4733f25a683843b02f3197740d28cec98070ded3538f796d092d57973047d4. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:32:54Z), 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/BRSIC1300068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16517731b1f8838f47db8d006cacb7a6dc7f8e0724ac001c8a79d6534783ca1a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BRSIC1300069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121e4385400b2092255a1b1ed25e39bc6037f4fd3df7201689dc33fc5eaad50d. 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/BR1J31600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c539e29215637c05801951d90e4080f7755ac607732bb345ff6e848be222bb. 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/BR1J31600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac5eabc61ec52e62da5b0c35f445ce73ff11f4f57297b7df246f52eb341a911. 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/BR1J32100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374b6c7c847dd2f5796cc295423c2990bdd9eef12e438cc5ea64b328af91e0fd. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/BRSIC2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf045a6e6541c8dd5c3a929f4cbcb7c7f7818babfdfe3b8321dab885f0e246668. 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/BRSIC2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84a6e562cbcf3c7a80234abc153d0f0231af083808eca1fa6c5d3928ac81434. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/BRSIC2300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e6be67dc10723e245d38c0d8b02a4e375d548d6f19a18686fdc6542a07dd80. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:03:56Z), 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/BR1J32300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8ed0a5135c6a68f1311fff05444348f8602610f669032489edbb830317d753. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/BRSIC2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24b48bfcfcfd6dc5b2afa9e2383cce1ac406e5f7bd9961cd9f43234cdafdf87. 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/BRSIC2400004.