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 0x3f94f8571257404b3131f188fab64db88c98ab3a7628e30d190930b8936a75ac. 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/691d2152-06fb-45d0-a046-03d8aa0af081.json and https://artists.proofprofile.net/proofs/artist/691d2152-06fb-45d0-a046-03d8aa0af081.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 0xd98850c5c57d15acf8d85bad1e579c3cfd55a63daad2bbf6b7443af285183ad9. 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/FR9W12332782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ef7cf13e6d731e74d1a8018c3d5c3b18a521c60026acda9bfd13c1d90c21ba. 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/FR9W12332783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6cdfe40d8675e653f7fd98be3f5d0ab34447876a4de3a7ee96618c965b253bd. 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/FR9W12332784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd5b1699b8f8f768a254d9ed6f73cb2e7b15a9a4838aaa4abc696c97023b237. 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/FR9W12332785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1300b9cb96f2bd2d23f0936e1b8c9b13436ca5b806b8f9227d51c855822845. 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/FR9W12332786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2497d5ae27a4878662c561641108363a5f46ad4757d895bd1135ae92df04b2ff. 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/FR9W12332787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e68f9a11fd5850dd1f79818cc5ea7a289dc4bc8eb77ab5e0bd66952c992c14. 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/FR9W12361786.
Bois-Colombes (feat. Jolagreen23, MITCH, Kabbsky, Buu & Ydasevic)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd82a731a221252fcc8f3f3ee2249222c966ad915a9839551444e9c03b3b5fe. 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/FR9W12409572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a70a2a23c11da75464ce924fb0fd461f1b5f323465f44324f67131fb8ff268. 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/QZK6H2448090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e68f9a11fd5850dd1f79818cc5ea7a289dc4bc8eb77ab5e0bd66952c992c14. 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/FR9W12361786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b88be5aaf963717b5c732c977a8c7b1e6a79c12187e66ae2104f5c675ee981. 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/FR9W12353321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b88be5aaf963717b5c732c977a8c7b1e6a79c12187e66ae2104f5c675ee981. 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/FR9W12353321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d7389e8b7eb718b24a4b2cece5f489df77b8fcc15ff7a0ea5cfe69fef23f21. 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/FR9W12366272.
LONGLIFE NICKY LARSON (feat. Green Montana)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc7aee3a1f33ec57bae61ca956dae1de185d33d93fe613298eebd445836f0e5. 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/FR9W12451851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ee59402da311e7880db62c533341a0e1f56acb390db54e0a28e18ba6f4da63. 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/FR9W12449731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f4b25a3afe40cc470c4209727989cf8ce7561e4cb4053d3ed7f63b59235e87. 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/FR9W12450908.
1.2.3 (2023VERSION) (feat. Adèle Castillon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37dc018e81b5c9470961739d2c02ac6032bb9fbe4fddec498a61557cf3631413. 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/FR9W12449742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b839df071ead81ba0b0efbe6037f0544c268b2fb5c5675b8649fe06ccb78d6d. 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/FR9W12450074.