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 0xff07c81af6d59638cc8cb3baf62e104917e9d55e586060df7482d6b731f60414. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ecab1206-63ce-4172-b111-d36054abe5c3.json and https://artists.proofprofile.net/proofs/artist/ecab1206-63ce-4172-b111-d36054abe5c3.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 0xcbe30f134d2f13716acf6a763b1c5f024add1fe25dd0972b85d08cec8d880791. 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/USAML1019702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4dea7b3388ac53c790321614920550b6db0222699113e5db119da5ba4405f3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USAML1019713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b308b591f7484d922807422758b38b8dca66365ce18cddb92f85318bc9b535. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USAML1019710.
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 0x193f78de0fdc6876cdbefc77d659a4005cb2b7e4f5ca11ed9f47fc8924a410c7. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/USA560866566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9101b29d8837d2dbcb6905216a8bdd5b8b470d82b5eaf34508cdc70d6fd9f9ea. 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/DEB639620504.
Authentic Middle East (Authentic Orient)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a92610b08c6822cb0c313a46ecb152b57e37153c8a5120d0fb7208a8ec4bc63. 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/DEB630027301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e799a107626b93f80a499fc169d2071bdb1081a364ee2b2b06432aeee14a056. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEB630027302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ccef1e7c7650317d95161e088f5a18af83503cfc7454cab37111836c4c2787e. 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/DEB630027306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8811d5b28a10b614c21b30d2b7c4cb18f82a8335a8307f655d66632ef0da94b. 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/DEB630027307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93607ef2460a7f30a70766a7e7cbf7be76a94f475d939cb5f6d85c9a28ddcb64. 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/DEB630027309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101ae53de9c462d0e9bb42794123077b1c3c95ae0e4b03b19f8e7e5f173f9b63. 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/DEB630027316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec00b25905222272e887c7a3ababba635a9f65c008bde7b65d4b7cc5501066b7. 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/DEB630027318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d521a40ba1042dffd4324577a54d464f704c9ad2f4b4101342fa9ccb541a2ec. Chain 2 (Bitcoin): anchored in block 960161 (2026-07-29T22:51:26Z), 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/DEB630027313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76ff6975519d45c9bda0f4619239d2c8a1511c0408adfdf89c0d5f7dedf66a8. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/DEB630027321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad483f967c3d5cf4f2500b1de2a2a173fe50e8325bf38cc089a6ef77f01a3e1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEB630001432.
The Ethnic Sampler, Vol. 6 : Today (Africa / Bahrain / Brazil / China / Egypt / Emirates / India / Indonesia / Japan / Kuwait / Qatar / Saudi Arabaia / Syria / Thailand)