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 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 0x55ecdffd381e386989301896329b64f0cd4bdde91645ec8e4f8762fb3ffb1511. 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/4dc56b9c-617b-4238-ae94-46d256059530.json and https://artists.proofprofile.net/proofs/artist/4dc56b9c-617b-4238-ae94-46d256059530.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 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 0x9bd893089a034e65da7474e05c7e37349e8b3288e820a80ce53efaec37752864. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USRZR1130301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa784e9f80c8531f1093febf1a5e08cb7b1a9410c78d3e66fb5cc370739d15234. 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/USRZR1130302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750b5124276e1b8f7c1c22c7ade22264681710dba078edf3673499e57fbd5d81. 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/USRZR1130303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27bfc6af3062602a62a97b056026f31198c0b9eb6d1c84a8011a2c3914583d6d. 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/USRZR1130304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140bc747845fc906a1ab4a22c03418f457310d79a721a7a6270530e07f1beffd. 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/USRZR1130305.
The Devil On My Shoulder Knows How To Party
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394a9e798b1182eb0e0a0dfbc0016f7d4e7371d423be44e83f27b119f6991efc. 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/USRZR1130306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x200ddd626f5ae636e8c8da91f72ee5093ff84b47ec3a9844ef3cabd6315f8921. 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/USRZR1130307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d0c50a3d6c9ae0b24dcb0c947c79960440a0bc18f42ab4350b6a2f5432e257. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USRZR1130308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5250bbcbf60066ee4ee5f57a59309becae263fd15e6b69a127d1f35309eeb3. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/USRZR1130309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0dff4f0f08f4c79729a093446efedc07c19bb14f5c48fbd6accaaa2ed367612. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USRZR1130310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f1f1b6b90f0d0f8e50c9f9b8bc632152da598db9039a2d825d2fadcf8794a9. 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/USCGH1024273.
The Rocky Mountains Aren't As Rocky As Us
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90056d89200c6f6b0566591ee3d908b427faf5d74da258e43f9f02bd65da4424. 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/USCGH1024274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318ca448a94ac18e8b753ff933b662309e47101b4d87d79278de95be992e7dd4. 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/USCGH1024275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d202818b46e206aa473abd33dd627d3f1db8fd17b66c9cf039c00c191e8aaa5. 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/USCGH1024276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0acac1976a123169cd525b298029f6495dfb7a861b9c001421a1bfd7f6febfc6. 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/USCGH1024277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb68a012573e5e102d51fc91f12eecea0c44aeadfb98ef83b8cfaf9d27c53e9b. 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/USCGH1024278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1cf0e9364a8923450c63139b7d5fca1f851f30f3e90977dda911f5cea55cc4b. 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/USCGH1024279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0061fa24c371205b640cfd32505ec8cc0229d0830b225c66f84d1cbe73549e36. 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/TCAAU1151897.