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 0x2df06905dcd63aec555f2b7d105ea7b58f26437b6a4199ea8ea84c95d81e5d63. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d04c988f-772c-403b-9704-529919fa7ff4.json and https://artists.proofprofile.net/proofs/artist/d04c988f-772c-403b-9704-529919fa7ff4.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 0xe9d694d2ac74d2f40e72cfded57e6119ceeabae54f01df9cbe469d3f01e40105. 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/QM24S1808807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd889b19b1d444fd764fa569c049ba44bee1e0199618ec647e8b757c04e2549. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QM24S1808808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd256be6af99178a9eb998b17f9dfbf5ac1a60e70ee1480db9250a9628d4f887. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QM24S1808809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf746ea1b8edf3a183663ffed4d424368b4e4979285072a7488fc8813b729ce0a. 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/QM24S1808810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd3798acbebab0b010fc6776c20fc8b06d5e137df795a1d8242f315bda931c8. 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/QM24S1808811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dac0a647325faf4d763f1c8522d05269e2feaa380b9cf478751152802d8443e. 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/QM24S1808812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89601012d878eccf459df5701dfef0436b4768888a7e54f3395f0b18a200af0. 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/QM24S1808813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cef1b726354f4d6a72faa45d145fc1a232932cbd1b25620f2fe99fbc1a5e76c. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QM24S1808814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9edb28fae69ee81d2590c0433db1b856d265241d2562cb5b947c390321313d4a. 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/QM24S1808815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf148ce33ac8c8f347ce11641ed407da4de0d6a3abfe75e07957b2e52e5fefaf. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QM24S1808817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c790c746e57be8cec79ed405efaaa79f9a9f59e495b048a92434b7111c75bc. 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/QM24S1808818.
Candy Shop (feat. MadeinTYO, SlickLaFlare)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77ccb9e426f79fd508d21ad0d8fb244ef4c73f8dfe34335affb9bf9dd83a8ed. 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/USA2P2013156.
Boujee Bitches (feat. Young Nudy, SlickLaFlare)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe378e2ba03292277486693002b5363bba2e5f96c61344b04cef1895fe84b10e0. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USA2P2013152.
Pass Em Round (feat. K Camp, SlickLaFlare)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287872327b4a713d32e4ec515619abaab9cadcdae1eb5d27165bef1bc0d413f5. Chain 2 (Bitcoin): anchored in block 957057 (2026-07-07T15:21:38Z), 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/USA2P2013160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788f0b73d3b1fc36dcfb550567c20f94633f44b4ab2ea30192982f576b22cb85. 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/USA2P2013165.