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 0xbe0aa27e4df212acab59319ef5479d8d5b166fa50ad0fedecdf44301fc07fabc. 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/65079a03-8360-483b-9ccc-590104388f93.json and https://artists.proofprofile.net/proofs/artist/65079a03-8360-483b-9ccc-590104388f93.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 0x4dc3d409f709e053734d302d9000ced68339a5381328796d8f777d557a5e03dd. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/USJKM0910810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6527fd5d679b4a8283d8491356dd78c66f38e7dff55f06a238e9f8233b3d5111. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USJKM0910812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d993f67fea927d1b48a442e23512af1c445624fa9885e29e2e7e236efe2f54b. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/USJKM0910817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72a8432fb87399af9b7f05bf7b92e245bf0e47b4d31ecf266aeb6f5a51408fe. 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/USHPO1015813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef2f6efe355defbcabad8775eaa03b65e4cc1a50537511f67932fe7366fb40f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USJKM1118802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d50e25fe1453c43d97d46b3b66975dc4f38c1ffab761ffb733a94ab4a5e5564. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/USJKM1118810.
I Don't Feel You Anymore (feat. Ese Menace & Lala Romero)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102df6dcd0f276692e45eac3360c1c49d7043d745def967ae9890503fa9c617b. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/USJKM1224602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffbaeff526dffd8437d5d6e41e123e94236c2f86e345d667517d2e8f42770cdb. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USJKM1224617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac885d4bd23d32ef59e19b9c65045fa301dd4ae85a77f6260542f36e2c486f5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USASN1610293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f90fea307afbf3c7e1a69a0f14eb0b26ad12df1b181bf497eca5b26c48ce69. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZDA52353830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b60a31d1aa3a6103b475b632e2b4b01807910bf6b30d26b786afbe6f88fbed. 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/USJKM0806907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf50da61b65089df89d1499397de80157c1202cdd034ce35388ebf1c4b5e370. 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/USJKM0806810.
Hi Power Soldiers: Summertime in the Varrio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a48e4c410073bffd309d2a692893a48af055a8dc2bd8f20616ea7958d0ae88. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USJKM0808208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3362bafaf694d58e0f1088a9bc67f86e5833845a0e180cc48842d368e9af4b3d. 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/USGNV0600306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67718d4115df4af4795e110199d428bac5b8ecba345488d7ef19930c91f3f73c. 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/QM6MZ1853655.