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 0x42e8fd9bca578016bb6c5ce20c14eba797fcec018885eb43d8792933a8e1f5f1. Chain 2 (Bitcoin): anchored in block 953694 (2026-06-14T21:38:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6ebd555e-71ee-4a86-b305-34fc946e9446.json and https://artists.proofprofile.net/proofs/artist/6ebd555e-71ee-4a86-b305-34fc946e9446.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 0x3c2082bdf72baaf29d69deb6144a4c7f941aed7f2c071ed3dc5871372cc76437. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:09:00Z), 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/US66W0801080.
Supersaund 2012 (The Flavio Mandinga Project)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2da83dc5ae8b9ef41415f6f2cf57c9a6b2fe359aa7d9e1ed3e3acde1c80cf8a. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/ARF471100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d314f5e96f6d15479aa7941831620c50a0ccd75effed007ed5b15673c48d571. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ARF741100029.
El Son de la Negra (En Vivo Desde el Merendero "Los Chicos del Fondo")
El Regalo (En Vivo Desde el Merendero "Los Chicos del Fondo")
En Vivo Desde el Merendero "Los Chicos del Fondo"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47791e914da1bb2778c1ad939622f2b2b75866b1008e267f7c4abd0d406679a9. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ARF102500291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5553c3c0bc134e5effd7392a5ff9e76f59647a890d4a4df2ea5ef5adb5bde7. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:22:49Z), 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/ARF102500292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dfe7a78d2a5ff2da7df72a5f0520dedf8528a0a239df5070e894879b5eb07a7. 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/ARF102500293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35eacf433f8d61b8ea796a4e6c8cc345ae9f34015bef137a3f1b688cba373605. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ARF102500294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab7dfc1f5fccd3b376b161ded346ec618b44cf461f79a0c0728f037c951d79b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ARF102500295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba49e443f202c3a8b235a5eca86a95fed9057581a4569891ab190b73a58e0b62. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ARF102500296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3351523543e0d395ba0318c88112418ea11b2344748980cd7011fa34c852b58e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USDXS2203985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c236b1b0320cf11b80510ca4b7cdd502f8451add954fb6db2fd11a4a9fc29f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ARXWE2290017.