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 0x8fa39fe00b9c1207b73962f26a4549bdee210c8e39d8473202a7fb73cad37a65. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4741568d-661c-4fd6-a711-2fbe821b0601.json and https://artists.proofprofile.net/proofs/artist/4741568d-661c-4fd6-a711-2fbe821b0601.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 0xaffada081a4b2d6bcc26b826555f1d34d601621f77d0d6e2784cf9d240596165. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/GXHND2517112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ffd1dbd084930ab600ba716b96b899aded874610bd7a4e07ae45a2c354ea60. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GXHND2517113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95cc9afd2f27a2b5ae8efb078db5b49494eac984d0722db5f2430f4c4f93a15. 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/GXHND2517114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8c2a4172aa80539398e47a2b3ac49dccd211ef97fddbdbf75ad91e5c640196. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GXHND2517115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e03f2c81ebb3a8c32565b891b10123af028a3e0f95f5a38e3b339a5b30827a2. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:16:27Z), 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/GXHND2517116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bdfbe0a89faaa6e97b6be08c5d30e360bf2a25748d2986740b81b6631551337. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:35:29Z), 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/GXHND2517117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709523908a647c834f7d191a9c23613b136a3060e06ede77509d550ce0646409. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/GXHND2517118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927afeb8450ec45af4da2935941f434530eb744224098e4635caeb42947507f3. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GXHND2517119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83691412a13a28dd7e604b662dc01389ffdb228215ff8bfed8eeccf1a218ece. 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/GXHND2517120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2efbcc002dc323c0d1bcaa6ab23a29bca19a112c1d538c16e1cfe00316919e. 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/GXHND2517121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65530347d125ee025cba2da20a55124e6d4a435ca7217d66c27bdc5aff4dfe48. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:22:15Z), 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/GXHND2517122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334671f317f16ecd2281f667f340328b98f4f208803094d5a1dc1ef427f77492. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:12:28Z), 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/GXHND2517123.