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 0xc6c0b11d45d58d966dcb8bfc606f458e66aa8740b3b09ef40a9a6e22d0abcaed. Chain 2 (Bitcoin): anchored in block 953588 (2026-06-14T04:52:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/01da2ed5-a298-46be-bf97-538ae0d153b2.json and https://artists.proofprofile.net/proofs/artist/01da2ed5-a298-46be-bf97-538ae0d153b2.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 0x744a2b04262d91938f68318d1302bc9a144900ed0459697785b43d48f1e7ad42. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/USDY42523923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e0c8561e639ace0d2605484a30af71e152546cb4727770764f491ac6520f73. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/USDY42523924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd826ddeec422c8dd72a121250cd9520930a038e6a56bc364417dadbdd7354e6f. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:05:26Z), 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/USDY42523925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff60fa7c0c84b5e5bf906b2eef17717517755cfd4628c22464feaa9e28dfda87. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:06:43Z), 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/USDY42523926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38fbd91767bf30367f379e240f334e2b00f5059cb4bdc7a72a150a6380ace0c8. 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/USDY42523927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f1eb42a6380754039b34652ea80005d2e0bd57d8c34361104e138967ebe190. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/USDY42523928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49a3d4268983c1439cee3ff224b63427da330ab58365d4840a6d76015711f8d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:15:06Z), 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/USDY42523929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dae6ba6a0aea62cc2383df6b2e8615810f8be2a6e9daa33f9c95f6daa60ee0e. 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/USDY42523930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf99ba0aaee3159e9af5afa5e9e07256b3e606243d39e0471fa5fb7630f9400. 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/USDY42523931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55539a4a7bc303c992dfc4d911122f0b994297e0891761654f3828fbc58e7031. 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/USDY42523932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746ba554461094eef1d79143133ef853b12ede47e8c676c03974ad8db04efbc1. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:10:01Z), 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/USDY42523933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b8812c0607befb0ac1b692c2da183bebb451860fdd7b25452af655bf9af4d6. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/USDY42523934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a46454397ea1ef358427c0899262698909609e9ce98bbd865c375c203f8395. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:01:57Z), 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/USDY42523935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f2f05e414097af368f05bc913d4e9f3781fae93fb26633b83a5bf24b1367b3. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:29:09Z), 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/USDY42523936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df417f64546a6080720b6554f1d69f2da0e9594a790bdf7b930c7dacc9b06ef. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/USDY42523937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb73f829c770bba9842619dd6bccc6243417e88d763039502b639a874746d37b. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USDY42523938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd013c9415a5c0a96e80a726ae8d3aa32be2e19e0d344a790f4852c8e6297f19e. 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/USDY42523939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb468370c21e2859dd9e3c43b3a8e2d2351f3317672cffa96bc536977397c1990. 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/USDY42523940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d6899b801e17c6a66b45cba1dd82a48b23b5b943e07531bba0857f66edf8f6. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:56:23Z), 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/USDY42523941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b4ba4791e3f0dcc37ad47dcb08b8777f2229339c4008c1e02f2ac45eaceb00. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USDY42523942.