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 0xbe422958eac54029972dc67df7c8ea4c60059ae7e2b6b543becff49f870d9e38. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4920d969-3eaa-4cf7-ba14-843f3859885c.json and https://artists.proofprofile.net/proofs/artist/4920d969-3eaa-4cf7-ba14-843f3859885c.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 0x6ed3519fdd104f72e80b8034e60df5e22dccdbf8ca5654fd002467f5daa683b5. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/US7VG1791825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca426450c28d08e14e62b98ff8edb817f259403f9a3c9e79bb1b61f440ae330. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/US7VG1791826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bfb425a83ef756baf432ccc8e31dd2018d7d01a4f7790c3564e9a337b63654a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QMBZ92083779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87a401b83d0f433e2fb946ae55bd418c99ee2b7c34853a980ada799aa221f96. 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/QMBZ92083781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72315237ab97c7d9bc1a742d3cd929f66d7dc997737e8e44adab8737a9d90638. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QM4TX1522540.
Quiereme Mucho / Habanera Tu - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e560bee86c604ac210c5c3563b83e01f137f00f8f17fbf5cc8016ff08fe5af. Chain 2 (Bitcoin): anchored in block 957608 (2026-07-11T21:00:50Z), 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/QM4TX1522541.
Siboney / Damisela Encantadora - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf659bd67f5e75a0cb11f24300f6bd3d70d06cbdaff9f6f512373cbbb385479c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QM4TX1522544.
Son De La Loma / Lagrimas Negras - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055adb29bad0fb668b22060280080545dc8cc0197a0adda9543250ef5f1480a5. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:55:09Z), 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/QM4TX1522545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432f94e01fea84091cd06a8411eb56cc84a97ea0eb93dec66c955f201a6619b4. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/QMFMF1543886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a0ccc3ec1e4f9d29d6a8542975b49b6c6e29d11f7d430abf13f3d00a4f8ac2. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QMFMF1543889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c25353133ca8065f59f52189ac98de61326d906742f294c542d78f06675038. 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/QMFMF1543890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3471d57fac16119b2003f83150753bc78c4a6a508fafeff0b0d7ed5fe7f8bc. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:11:45Z), 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/QMFMF1543891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9be97f42c2dfe1b2315bf92a3fbba7b106391282ac9c130b0b38ea28160ed6. 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/USBEN1756604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91fc6d8a4b70ef08eb83381164056e682294dd53871c90ce658b927de8d149f9. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USBEN1756606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e2825953ece9a273f71198ce4e2856d3d04c36a6035897f2f0004efd98262c. 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/USBEN1756611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1efe18e5a481e930202c0f57953f0afed0a6cc144b961b6e5a1e7146486db6f0. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USBEN1756612.