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 0xc82e98c916c8347d1e5c0615c5ebae91dfcfa94c52c5673b5f9a2bf3bc3d76bb. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e267015d-521b-4c79-84c9-0386d224757e.json and https://artists.proofprofile.net/proofs/artist/e267015d-521b-4c79-84c9-0386d224757e.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 0xea278f45a52b89c0c216b3a90e3c24c74e2cfddf0c0937a2615c24a9a38587c6. 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/USME31600189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e11f565f1ffc2ba306fe67a1838b582d7328870396eadaff0fbd2ab23e6de6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USME31600190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630bf558bde75973c30dae95e730375736e1c6c480164d8a2668e3e14a8f094d. 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/USME31600191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81186140171dd1e7af572325a4705e753931418ae099dd76d3e6b192649c9622. 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/USME31600192.
Hear It from You (feat. Lauren Santiago)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc674983dca23422470d9d9d29c666f0da869377b89e091ea863924ee1deb1cd3. 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/USME31600193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ef1637d0614f5033bdc3ff16f0760a4857a73ef01030e59401430752a1c0f3. 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/USME31600194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1c2a928b601926363e6cd1172a6c8150ba7732868d860d3a138e05274cad6e. 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/USEAX1502664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25ef4315a2d9eba8e8b7e336e41fc29ed69d59a15431bccd288eae9958b6e6d. 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/USME31600196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc723d3ca81eeab1a7af8bc73c315f3a33d252f09d3cec163c957dde4f5e90f63. 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/USME31600197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd61627ea634fd2f81f466d79f59cb1b4aa4e25d097a02283e6721c09bd1f2a7. 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/USME31600198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c14add565c6f1f20c00b01b1c43fcf7bed6046aecbc38846484ca8f97fc56d2. 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/USME31600199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c0379dc11025789d0c6e6243acc3aedc9fa26ef33b8533e169ad7ffa263230. 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/GBCG41200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3f3b9fb4a3b3f17bf3f7adc0e302c09e345b45167e392bdf05906a1bbfe198. 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/USEAX1502663.
Bright Lights (Instrumental Version) [feat. Andre Espeut & Bnc]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56dd0390597273cf3c94638b482584152bb9b19bca907b395d6e1679276a36b6. 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/GROR11500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d298f1dfe3f9f0516cd3f94fb0b06a8d466e5a142f22c935f121398ad4e4ee. 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/USME31600203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f73e90f13df507a1f1b98a393ac093d9b22f2169b87d3e3aef0545f41c917c. 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/USME31600204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b371b81cb21e374cd2d3efbcc599b1ff9a3921e64b89cda59f0a76402b5a42. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USME31600205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65913b818ffcf0a74eede28ee7eca480b7c31284cced8efca71716ced7645ad5. 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/USME31600195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5325338be067e310bc3894bf5e0076b829af89d6eb5cc21c7cc476d4cb8d253. 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/USEAX1602933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29806050d16417a0b3fe6b43a390ca0ac863358e484d7bac92bc76177a05732. 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/USME31600200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854ce69f45bb4027606bdd6bcce3fe0021e5ffe85e4de89c8506c4fd4d3757ec. 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/USME31600201.