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 0x42a38b6df3776a79e833ad5ec8c85a1a62c2c6d803099314947cdb48bd4d5323. 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/2e096814-7f3b-4d95-9b5f-3541e4955f51.json and https://artists.proofprofile.net/proofs/artist/2e096814-7f3b-4d95-9b5f-3541e4955f51.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 0xdd22c7835c5c9e43b12700e40501928f46b701eed01cc565553ebf1094bfbc8e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GX8LD2312427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779a91172d3a5bf17e07d1e014c20b4593702f65726577ec38cad85f1293d3d0. 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/GX8LD2384858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77155f7bf4f2c6540f9c5423fb02fb8fb8d509003c67d6eea3e44686614f0e51. 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/GX8LD2354082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9176ffd689cbbd6abf17149d35ea5d82c615bba76bae45c5f44e98f34d8cdce. 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/GX8LD2386583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a31b9badcd20d028a0fd201d1b083fae6702351b5abe8fd77fdd0491f00423. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUM70600204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73021dd0e7640e8d19c5d3bb4a6064dc9b885bbfb88d737cf3fe475857e46ffd. 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/USP9K0800041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446b2dc14011c429b848dcd1d97336be10ae2bb6d6eceaf4384643664a571a5d. 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/USUG10701246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe69b2b832f6fc0fd7938ecdff2665fe0661170ddef826322322ed686d089cc. 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/USUG10701244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b3846d14c086d143b097211dec1ba89c7def1cb20bc84684236251b2159968. 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/USUG10701241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256357ff0178ee78842e36efb4e292c17ffa8f5f737476fb5f4dcf16685ea621. 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/USUG10701243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe1dbfa2a3f9a7a266bdfe33e7ffedc6e1ac0a2c286d07eba197defb64cfbc2. 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/USUM70600206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc335959934a0494b156d21106164004c78f1372abd7c2c6f89ebdbcf9803fb1c. 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/GX89G2476373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd472534fe865c7aa8c4e1d821a53159034ba69212d142d6ed84767bbf307578. 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/GX89G2429545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461451740ecd0ab990525f23db10bcf30c2e416bdf397bbdd84e2824a41000d8. 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/GX8LD2313331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6801c79c167e7de9243986af4de313eea1a16d68dac09d1fa2b4ead1279eb1f. 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/USUM70615353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe1dbfa2a3f9a7a266bdfe33e7ffedc6e1ac0a2c286d07eba197defb64cfbc2. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/USUM70600206.