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 0x8e7fa9e08729eeb8b243e16da37df9470de3064c87dc0414c446c2f475fc27a0. Chain 2 (Bitcoin): anchored in block 953645 (2026-06-14T14:31:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3df651f4-deee-44e4-b770-ce0741e1a24f.json and https://artists.proofprofile.net/proofs/artist/3df651f4-deee-44e4-b770-ce0741e1a24f.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 0x5d7f59e72a21d726002f0b1d7af0f48c2ed51d0754c67ad1084fb37f62472d54. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USVPR0916123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a11e1354a6f169a9dc81b424b6c9d2eeb651d8a0d2d36a553a6206554fac6e. 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/USVPR0814911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ebe724ee3cf847cd63dd8dc3c261cdc138f7f4f567cd52b35ba015f832197e3. 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/USVPR1100466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c23ca0b4450f83f902d4c586b4a8cd8075bfcdbbe119ffee3db2277143e4ca. 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/USVPR0916147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567a5ee97c7496f926ebfbd105500f67854d2b7fe2bfcb1c5193c01fb74eed24. 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/USVPR9805641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77fba70d09b5e87242192873cf197e10bb41718eebad0e2a3bc0412bb34cdfc3. 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/USVPR0007008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0e95aa9402743497d573c12b29070323f88292007802897b557b3069c80c30. 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/USVPR0107669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b0a891042d846821413b148c6f3a6034bc8c84971122979688bc67b91b2b5b. 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/USVPR0006938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfab9e6d456435a4771462bc3a23931f35a95e4a018f042ac33c218b1d52a8db. 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/USVPR9805635.
Good Old Dancehall Vibes (feat. Big Youth)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c8433b5675495f6b070eafaa1aa564e5b1f4f1a0e57a506174fb0cbdde2d80. 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/USVPR0410327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6896f14284ce1e1c670e278a22b03cff44e077775bb9477ada782c4241fb03. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USVPR0309388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d6054637ea59fc8d7fe489e506804a69a5548d903aa6617c52dfc9acde983b. 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/USVPR0409670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a240ee5f7d2ccc05ffa0bc2febd14612d43e20907e8eac8915a26e2ff4188e. 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/USVPR9805630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1c63d6dc01d1532b916166a6765c56db11b2c208c680c9701d78df35b04244. 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/USVPR0309391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460cb3c9e4919187202088a72e606096a0acd889e355d7b3cdb235ef8929d85f. 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/USVPR0309385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c740d2fa31b2270a2de8e1cc1d43782b494aec7158da03f15f67d355375ee7. 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/USVPR0409766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70aceebaa03aaa39b7ab42cd8931dd6a2b1e0f37e4000a9b63fa19d8c77effab. 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/USVPR9805638.