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 0xe2a31e03af80dc9884dacd4843e5eb96ca3e8df1759447b23ca6edc30e4f74df. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/67e993af-8b14-4e7e-bff6-71f23a479cd6.json and https://artists.proofprofile.net/proofs/artist/67e993af-8b14-4e7e-bff6-71f23a479cd6.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 0x25602f266e83171625fffbf0f9150325d87ab91abbb099ce96b5a9d23e62cb2d. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:40:46Z), 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/USZHR1600022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d5b17dd27da525532d8698fcd02c6e3b796d310087a0eeb990753593130f53. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USZHR1600021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924c053e05c05cff89fc5742a365a199be4eea7427abd95ba84ed9c1b85a4670. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/USZHR1600156.
We Just Wanna Party (feat. Rittz, Darrein Safron)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ca80fb327a9b682d774490c27dfa93b852ba331472d3dba2602dc9841eea39. 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/USZHR1500165.
Fired (feat. Stevie Stone, Darrein Safron)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7b09f8bed75499ed3c379a2d56c3c54e3dd376ad31e534d585ff3b93f1d8fb. 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/USZHR1500168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39aea0c21fa3dd0878405aef687fa0b6c0651e8686674f0197c0a75e6df38b44. 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/USZHR1500169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d63e9c78b0a505485e25f0867ef9386925c910ade6b25c5ab7ceed4aa2b9218. 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/QMTND1101177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d19d0784f14d2b63b88f788e614dca2b3368ce19b7a37d09cfa86e74b9ea7a. 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/QMTND1101179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907b0630485873ad37f3190fc17d3ce46de6ba707e23736cc3ebc85350a917c6. 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/USZHR1600599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33902fa7c4606ab03fa0ee1535f5b512eb1961eabb7c55ac0e66380983805fd. 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/USZHR1600605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3387095b0eac846f4ae3aa5bbdaabcf6b42d799a55af608804743ba8b37b9639. 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/USZHR1600614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907b0630485873ad37f3190fc17d3ce46de6ba707e23736cc3ebc85350a917c6. 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/USZHR1600599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33902fa7c4606ab03fa0ee1535f5b512eb1961eabb7c55ac0e66380983805fd. 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/USZHR1600605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe313053842b5905db37492db8883f351f61438b44b75075372294bb93b10b583. 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/USZHR1600304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1ca2b2316ba226d6d4dffc9ea27f9885b9444f07f0a8943cf714c5be2467a5. 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/USZHR1600309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1c1b12a1fd8b03724cfd2d87a7283ddc9c2522ba18f80bd77f902f3deeec2f. 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/USZHR1600317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ca80fb327a9b682d774490c27dfa93b852ba331472d3dba2602dc9841eea39. 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/USZHR1500165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7b09f8bed75499ed3c379a2d56c3c54e3dd376ad31e534d585ff3b93f1d8fb. 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/USZHR1500168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39aea0c21fa3dd0878405aef687fa0b6c0651e8686674f0197c0a75e6df38b44. 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/USZHR1500169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87de8e320a9d292ffc4a1c2002c73817c821553a049c4463d9e18e68f18c976. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZHN82284537.
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