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 0x36e200401bc764917729ff9fbb39b5f2d324715764120f41852fd291a00aa7cc. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a9768f99-63b3-49eb-9911-ace40f26d499.json and https://artists.proofprofile.net/proofs/artist/a9768f99-63b3-49eb-9911-ace40f26d499.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 0x032ab8bb75dcb549efbb12da9792cc8161efdb11eeebe8205c556787d2820669. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZANL1704175.
Sitting in a Coffee Shop, Waiting for Your Mom
This Is Here and Now (Until the Sky Comes Down)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda93462e95a2a1c56de9c3b5595d89c6f73e9e3711dd84074b87dd24ff4ecf0f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZK6H2279103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d8eaf2f9cb2ab3f9d294f895ce7bf3873752ee0546df8b9579216b3579add7. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZTBC2349102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8f9fcabe6e41717ca79e17699be0b7312791340629fda82416a20978518b81. 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/QZTB92446910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05bd8c24f22a0d9276d97c6e08e5b3ca1301525330201edb59c61e9b806a451f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZZ762412428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa011887e5c6583ba138fc496350d367c977258bff19fc4bfde624c81aa6f99. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/QZZ7L2484294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6edced157c9cb0bf1e646faae5081b5ce8e8f1d3503b7434a091b9549ecede2a. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/QZK6H2586227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc810c6167219fa53d20a10a3e78b4b34389a9c7aaa28c84f099856d65092d4c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZNWR2588827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59eab7c208159712046a961aa44f70791adfd979ce68abdd4dc0fd2a04ed34a1. Chain 2 (Bitcoin): anchored in block 956775 (2026-07-05T10:41:06Z), 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/QZTB42511121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223bf8689810b20bb19eec48091857ef209cee8a4d2ce168d99acbd444ba629f. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZTBD2505297.
Does California Even Know I'm Here (Pop Version)
Does California Even Know I'm Here - Pop Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa5afdbe93a6981dc2cf445f128daa4cea18c3ffe7bd219818c4961d53a88d2. 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/QZZ7L2553960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd338005840b9d52e3b39d4c12f8b37b8fa0eee6e5c92f0de741934508fc7e47b. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/QT3EX2570116.