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 0xe3bf33cff535bd264ecd9c23899277287659a43de0f48e4e11dee0df70eefd8a. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/60c277d8-cfce-45f0-b50e-f00a85b7e3e9.json and https://artists.proofprofile.net/proofs/artist/60c277d8-cfce-45f0-b50e-f00a85b7e3e9.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 0x7735d069d71d2c19ab93a047613572c7f71d460b1de030c2bd19cce861876761. 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/MYLR12120058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbffffbb5c689cb0c2f6bb55558c304bc93b459077657535a57dea45e8602179e. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/MYLR12120061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57cde9b0990a12bf130f058c1e5cdc90fbded01fe82a946f990d5a35aeb03a2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/MYLR12120062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec8713202f283f838ce46f3abb2a52b0fcac3ff10a1ecddadc58ef3e2da1e8f. 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/MYLR12120069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa079d3c9bf5b385bd3e973fab45723cf4b9821badb08d0e7c7818ab311c6ca96. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/MYLR11421829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe9aa4e1a54e171d71292072584e4d76c991a973dd9d6596f905ac0b34ba9e5. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/MYLR11421830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd4fbe8bb08b847703ea9c7ad1858f21be9f0c0428d64962bc2182e2c989ee5. Chain 2 (Bitcoin): anchored in block 960384 (2026-07-31T09:54:03Z), 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/MYLR11421831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef9f35a3c514338d87facb4017ce09213828282d8dd464c793bb55be62b453f. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/MYLR11421832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc82a78e48ddd535adf51e78f17e5aadb77d8c8772c51440e3429e91f30adcfd. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/MYLR11421833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12a20fe7df49118ece1fa51835a140502b055fe4f36654af2a44933f2131cd2. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/MYLR11421834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161c6599b200095848cdc72004126f73e8240d9290ab0f95b28bd5adec8706ed. 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/MYLR11421835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51cd20716285677c46b20da5ea01df602e35fea336039ef76ff0568d48d0ff26. 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/MYLR11421836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c78bc867444d0036b4994597bf0f13524c9190f8b5522452108262d117227e6. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/MYLR11421837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfaf9e8e407999c314f00bf8b668d2368966b83f42fc06c4195e058a00fee24a. 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/MYLR11421838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdede6cb42b2aba603702595c667856db1bde0d1b157f35bd4d3f44d1c14961d. 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/MYLR11421839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56b42584071657bba7d36d4cb0297c5ba2c461356cc451520bccb3f384a7339. 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/MYLR11421840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff417561382932dc73290742f3785c655d7d55914e1c9ca869bb688b59b1496b. 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/MYLR11421841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a9d9e1a6d63df927b20275a828f81812e929140b87c1e465119e2e27ca314e0. 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/MYLR11421842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab02d77554280cdd743b7787453777135651c70a0b747fab209b779c10e76625. 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/MYLR11421843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d3be9b55a2a10059a9551ac2fbf9946588e5e599243143dac3e35c31818da8. 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/MYLR11421844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac8e53d4e241b4e7ec3b4ca26702449e52f6cabb6bc185a398f24bf8daf77d5. 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/MYLR11421845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e809c08148b9312f0f15dba0bc290bd5d806334099ecac14f21067fd925541. 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/MYLR11421850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff343bd487e83938c7e7f5c8674a6cf2b4ab9ae2051efa55dc9781d769ac822. Chain 2 (Bitcoin): anchored in block 957249 (2026-07-09T02:31:37Z), 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/MYLR11421851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e27fe587d17484a0894acfd15b162f59b55383a2cca080d650b76795f6e157. 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/MYLR11421857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3348f694b39f0a368f30883d744cef53e7e89cacf0c8428b6627a767f98407. 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/MYLR11421859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf487956891949511b9a2745b17e58ffbdf726f104f4bfdfd39c25af5bebedd1. 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/MYLR11421861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315b6eb909a11a7b595e95f94ea2b1af9fa7bd53f8a395969f18c330548c54e8. 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/MYLR11421864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60a6a2e8e43d501063f06b02082110cb78d060ac25738535d7d01f2117f932a. 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/MYLR11421866.