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 0x74cd2b677e249262941b766523c08f045ae8eff84718eddb570ddcd5aedb95ae. 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/77458b48-ac61-4d56-bcd5-b6766a7c7448.json and https://artists.proofprofile.net/proofs/artist/77458b48-ac61-4d56-bcd5-b6766a7c7448.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 0x6061d7d317590dcea04a5dc869629a8ddcdc89fbebc17219b2bca86f24892aad. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USF289801685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99835217a31bd06e765b2dd20973d9f8c32e8d0251210a852e9d9d72825a01c. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:27:14Z), 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/USF289801687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ecfe21e27abb5c6d9eccc7b725acef7d4dbc4d8113e89db0251e349bdc7a246. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USF289801689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299aaa379eb19b85d1e8bb05a1d9b0c92134ae484a5a223f5c522664e003db79. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/USF289801690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57705832e7579421492ad0ecf8ff2ed4cf14fbfd6da286c3e8a133f53957f9dc. 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/USF289801692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288325b40730549bbf3e4c068b4db3b68ae07ebc7552be3b45cd3b5ec86d1a6f. 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/US72W1922802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336292b1620252b2eac844bf4a80f8e68b0e4550b6b6c4bbd98ecdfb49077c7d. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:12:17Z), 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/US72W1922801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097f09bdab1d810e6a4da27e6722e6f17e8deab4ad39562e1ab1fddc84887d49. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/US72W1922805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ddd363693c2576b5c423b28f9da5e9744aa994e7877f9b6958414dbc22d3934. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:05:53Z), 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/US72W1922806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413798e394166aa4233a7ddea7ceb91788f322c86d3abec79723fa08abb13462. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:20:01Z), 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/US72W1922808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5c4c97d121dde0c71981f8fb4f7a2ba028872cd7d66a1df22972dbf161deb1. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:54:49Z), 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/US72W2024005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22fe0354c3bd7466202cb2c5c11bcd448e9d50893ba1440f944f9a2aa24456d7. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USF283083002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a334eb4d9ea74d61b9f104bcfea0764a287fccd55f987f0849989f71fb3a8e0. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USF283083004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db85ec4c191b6d0901f5eb92148e0d5a74105a7973658814594b161c98c4c17. 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/QM7YK2200065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31ea73accfaafc75436b44da577a4bf5ca499dfb47a951e8a3d37cada46a341. 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/QM7YK2200066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04923221614630d5c34ab5ae36bbc703e99df7d9860886a96757b5057f51ca6. 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/QM7YK2200067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e15fa3581840bb0cf1c202d373cc4746ccc0cbf64bc90e52f55f2b452d0785. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:08:40Z), 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/QM7YK2200068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bacacad8d52493a858c903ab5f9fdbb7d8a391e9826340248fd840387f2a5e8. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:54:31Z), 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/QM7YK2200069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37fe0a2a8cbd501d31afb1c782f922b767913008626d1cb3a0eaccc857aca32d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QM7YK2200071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7948928f0910dbbf15008e052ca3339d831c7c2944cebbddf637163e1ed35c50. 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/USF283135001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa934c391ad7bf77410f95725ca0780dee5694a404c36efe004d57b3278f91e36. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/USF283138001.