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 0x71e5031f777ae834b7775daeacfcb420979f580236e578c73308acdc31643fd8. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/242112ad-aed5-494b-8095-a260df47489e.json and https://artists.proofprofile.net/proofs/artist/242112ad-aed5-494b-8095-a260df47489e.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 0x054d9a5412334a07a90ef0f4680f36458e1b78c8bd17613ce6458a96878a68a6. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/DGA052317582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03fbad2fff97a4ccd403deec71740a33470564d37ecd516335a2a457b908feba. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/DGA052317583.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7ef1bd96025bda45dc8dad4f4624ab98e1d22f1d00d176a2cd2fcd2ea69ce6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HKG731403608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15396cbbc8866c3a45ea0c4e2f10c90373c4af45dd93ea41267aadc29fc9d860. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/HKG732492738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd32eab673000b9c6d5a1340424951ee9c5636101da82ba83958fc70fb7b870b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DGA0L2471658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e3fde3241251748979a7b51bcefff832671746737ebae01f2afc4d56b5f1fc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKG732465071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21bbb474cfa09caeaf15fb6d2f2b177a7e7a905deaee6eb0c80cc38d815fcee3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DGA0H2415612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4621269846f862438c81d740fe3acd3c0e76e894f8e381de153ed218928c7bcc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/HKG732406776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5874b6fbe1436dc54eded137cb1530c73a735393854d67534a0547b1eaea2510. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR2X42424308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25d11a5f0fa467018f5051d467ab7da2eacab306e8ba6b72d154311a3c3248c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/HKG731670951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85cccc2ae917023f7d459d04ff2cc124fad9afcbe69cc67d39965e4f8b11a9e6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKG731681962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15862cdfedb2450a61a8bc465efc37d43caf9ae43fac07fb6b65ca87af9d1536. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/DGA092361442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590208bfd0f64f818633d13649ecffc91a87854b6e91887b2357514aa3099871. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DGA092351435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9faa981b11c58a2cd85a17a579a5a1735bb04aa82bd79ad6d9de2d9727ba3fa9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DGA072313525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed11f4fc78b646868ed7c3edf043e51ec12c2e352add213ec2c0e1b4857e8c79. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/HKG731610417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe2e9e0dd558282e7538ac5f65b1f3f2648836731b21668801da4760a13a213. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HKG731681499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc0fe6732e724f42f9465cb159da2f1fd6a3b3f1620bd64253d51f8d8b18baa. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/HKG732327509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b24a06d3da7ef4d854c25564e73cd8f8fc0c8f0d947d72d7b1c9e3abbf11a8d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/HKG732331911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68677332128227ea151a2c053713cdd1f40f93ecbd198d709f9e407628088f7c. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/FRX282359556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2065b3852d8fe9e72243a609fd7f5dd51b14bde65ee53affeeb7b69929613e2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRX282359557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f8711dd7abc66501679effde7d6c86b99854a953d8bf07ed3c6c7fdcd84418. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR96X2347542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf163ce4fe54a39630656f84fa3ca5dc1910a5d71f98f76f921a0b3b4e560aab. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/HKG731681813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf55fc98277c15fa8fe8e4d45773249d8c7f7f97226f403e099270642ff6b441. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CNZ632300075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94fba2b91fc28897e543ef9fe851d2011205d2120b9ff78ed82fe4d5c731ca83. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR59R2344549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f5e3fdcd4790fcfeaff589caabddd09d937f1e3f82ca1452b33303127fb45d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR59R2313928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb446f036f1040bcdc57b880442428d5060b00439710dd9ca7bf02bcf11125ad3. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZZ972325869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a20aee1683e2bd096c1d6345200f6d92efac36ffe3430868ce3e5b556b5b557. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/HKG732274401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72eba3c9b05abb4dde5a3e4ce944c4f6a937c95ff16ccaf653c7e24971675226. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZZ972330572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb5a61abfa2ab9518e0ead58eb5ad00aa69e1693f7766dad7a11a1ad6aa4311. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/HKG732274414.