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 0x9f8fbfa99f1fffe62c6ecd96e86e1b9e0fbe689ec11fcc8069e4e32d348d58c0. 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/71692403-a6a8-4870-85bb-36ca92ad0dad.json and https://artists.proofprofile.net/proofs/artist/71692403-a6a8-4870-85bb-36ca92ad0dad.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 0x00c04d9632735582e0a9f347b99e58c31d43150b70c94c9d283971c1a3ae58bb. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/GBCQV1900069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86ed7f6df3525f6658e2037fb2aa04975d92bfb2a91e2de0e23196f4fe4c3c5. 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/GBCQV1900070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37bd5adf68f607cc2235040ad7342c2d97126a60db316bdf74effdd9c045b6e. Chain 2 (Bitcoin): anchored in block 957558 (2026-07-11T11:36:38Z), 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/GBCQV1900078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfba8154448870c3fbf51de1cde4771b9e35798448dd5e8cc31be013d47a162. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/GBCQV2000570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6892ecd447d38c65061d6be698d20cfab61363e7bfd4a7d15778dd63c39d0edf. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/GBCQV2000571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54880b84584c8eb3b78ee9a76de1ad780f8cd6903fe010a557c636dff159a2d. 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/GBCQV2000572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc94e752f2d45cea2efadbe4b2dab93331e72c58d25fe50abf49aed148b7857. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/GBCQV2000573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5fff9beb65179bf710a25c37c0eb0a8ab0a00561c732478fcc4121bc1eb1eb. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/GBCQV2000574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61dc04b7354bbc033e1b78593634a687d9fc0787fbf1a44e6004483e6c228bd. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBCQV2000575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520f172e82dc33c2586d683e33db498363d9c568ecef580d41a21ee214e83cdb. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/GBCQV2000576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fdf5134f516936ef5bad16f69a24bfc9b58775e8cdee6a8ed7888e0eef6b6ab. 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/GBCQV2200193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32891f7d9f8f385835406b2b6947a54609c9956d127aaf6b989dbdda9da7450d. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QM4TW2438950.
A Dream in Static (feat. Daniel Tompkins)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a720773f2e0494558f9053046f5df5c7920288715b419fee1739c9832a0533. 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/QM2JD1500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c1bb700218f648375a69b11b3ba4a54ea490d32247bcdde5774ea98c3992ed. 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/NLB932200109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c1bb700218f648375a69b11b3ba4a54ea490d32247bcdde5774ea98c3992ed. 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/NLB932200109.