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 0xc466c31cc54b35a05e980182ce6cbd8dbb8e9c2b3ab65c58c2dc152fba695485. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dad86466-5042-4f8f-b7ab-f796edfc9098.json and https://artists.proofprofile.net/proofs/artist/dad86466-5042-4f8f-b7ab-f796edfc9098.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 0xd2f37f0ee444dc6863d8858bde21edf138c889365db10f1bcb9f0f9f6b072b06. 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/TCJPM2020932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbddc0a5706c6024cee5dceb8635d0ca652ced0e63a8b60fc2626ae180cafbe6b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TCJPM2020934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719de4b0c8c6d3f7f70c3b8589793e67709fd6b2bdada8c47f37c7f6ed50b7a5. 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/TCJPM2020941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaffbae373e6577df9f702a75b980766509c8a186610be0738f6102f86559ed4e. 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/TCJPM2020945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc37f321d93e10dd67d85206b79e09f873e7dca04e05e4a23d6298b5b7598924. 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/TCJPM2020951.
Lycoris Sprengeri (feat. VIGORMAN & TOCCHI)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8572f31bfea9f0e0e70a5b1fc67943c3c9837919ef3fc5d6a0296d47a6acfa54. 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/TCJPM2020965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f53b100f25b0dc806fe5a79766b1d8dce6aadce50125d7c15d68711db8d307. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/TCJPM2020949.
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 0x266edcfd02d31fec94cea9efbcb5c25282808409ae3f6a871064e2c50098f684. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/JPJ982500340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c9737b1c9be57384eaf37c7ddf153fc0f4305201aa7402634d00fbac481d30. 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/TCJPU2393288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855e3447423d4ba31ffade1c33fcc8e8bb4c6028f81219399a617be54443bf49. 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/JPS801838507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6245027371081bbca5ed1fb2bbc3c8ed1c5bbcd91dfcfae0eabe126bf73d06. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/JPS801840060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6245027371081bbca5ed1fb2bbc3c8ed1c5bbcd91dfcfae0eabe126bf73d06. 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/JPS801840060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38fc99361e1b2c412ff33ab6ce02f0b897ab85069f6194463ff8e878c57898c4. 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/JPH491616039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d3980c797a3a51eb613828f314af36699d86232affea69922ef8f330012ea6. 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/JPX601800067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4e558f166b9edbd6fcd2398e21f9955538674b3d13b2542a12d79aaca4a4d8. 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/JPTF02201101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4e558f166b9edbd6fcd2398e21f9955538674b3d13b2542a12d79aaca4a4d8. 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/JPTF02201101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1098d5e7dc48936381decc90a2d6241ad3eff742b71834a02cf43d868c490f06. 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/JPS809919495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b848728b79c059c480339ec9eb08e1ba07cc493aa1f8f3394e85ea946de027d. 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/JPZ922013226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600e43f1faf5f36beff58454c3d0b16f3d70afe66756873895738ff24cf3fc3a. 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/JPM591000977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1560477d362123ca52fcf84b64d2ac3def10ca2da8c27fe626041b988f7bf0a. 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/JPS801837203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265733202d6308161f308fa4d55ad643c72aa8d34ba4959b6d8b9763730aeacd. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/JPH491616048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29af7a2706fa0271ec18738af6f065cdc3c2cdc79214c5bc63a579a33a1c8000. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/TCJPX2306435.