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 0xb5d1e0ec582b368c7463881f81a9647961463a94819e7de6c3fba1e6459b308d. 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/6c122874-14a4-44dd-aad0-bbbd78656b42.json and https://artists.proofprofile.net/proofs/artist/6c122874-14a4-44dd-aad0-bbbd78656b42.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 0x874c071ed4223100b45796656b5dc6fb14f02e7afad0d9837f8dea88ae7f58c4. 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/USFP70913308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a3d254dd9e3a28d8fdf8ab3cca2ecc3fbced6ab29c2c50a596f04b468ca2d9. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/USFP70913310.
Groove Is In The Heart / California Girls
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d662d5c1f73e6ff424a328cdde7b166c0fcaeb08c6d89c301da045a6ebc09f4. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:10:07Z), 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/USFP71022202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da60b2b78d32d1233156287e4404fb32b141ebdd84995eae6e942de69ab61f1. 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/USFP71022602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787928203b837913b9a8c26a5012e17b6b0849c543610bf7a3a413f10a613120. 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/USFP71022605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d87546aa6c5c4c8411b1a118b68fe9dde24cb1f8a2fdec23f837c7288bbeb1. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/USFP71022607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc652f4601c8a0e9710feb060bc6f3948d9acfea2c97e2536b18948f99cb5bd73. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:23:56Z), 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/USFP71022608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77a9d73293d09c4754c214800b52099375e9c4952aebf511e983a4ee40538a3. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USFP71022615.
Merry Christmas, Baby (Please Don't Die)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d0d169e6ecbfed80aa66fcece61414b063d689985131376e4c5e30367b8894. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:35:32Z), 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/USA2Z1212060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e49362652e1890d1c9c6f9ac26f24e2db776b785140cacb614a3105235c502a. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USA2Z1510127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b04d4ddc423a87b4a72deaaef1d0a13d78518d9eca28d5f8de298ec6a15fbf. 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/USA2Z1510118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b6e71963dd190dc186925f7f83ed3335770030601db7fa1da433e15f41cd52. 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/USA2Z1610843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d84521fb3f0ef36b39fb435041916841060673b7d5337d475d7fea5ea2c5712. 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/USLPR2301011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a891f12b154e29258fcd93523cb14dd5eb8439cee808d573163c22a85899935. 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/USLPR2301014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0311b9ff047aa4c93f59b3b03bb72e9d18ca3190d7f087d980b162ed618bbbe. 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/MXB551600023.