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 0x77b19b31c39443e09c28d3b176573ba8d915b6fe093e6b9408774f351b8b23bb. 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/023d8458-6874-469a-938a-ff31e856848d.json and https://artists.proofprofile.net/proofs/artist/023d8458-6874-469a-938a-ff31e856848d.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 0xd9c76a34b5a1d10ab8e3b4a511eba45e7d7ca2c452ee6c75d92a1dd4ba95508e. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QM6P42052096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d2bab9e407ed9d7d10780b51892e15b7e626146175519da58aff229190548a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QM4TX2142954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dfcf6cf08973f09acb6e74472904be5d54c040e8f7c5ac8e2b6c036c67724b7. 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/QM6N21937122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11bebfbb758494e9b45edcfa717cb16d64653fbf973d86e83ce8f218045ff62. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QM6N21937118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52946186d3f47d35cdcfbc56a87281cdaf04feeb0484faad458f7841297d169. 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/QM6N21937132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6616cedee26584af5a4fa04f12d7ee08075b02f28a17d831fa748d8b048368b1. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QM6N21937130.
Clarence Unplugged with Marians, Vol. 2 (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540c4f4ecd1db51d9dbd33af1be60aea198b92f54ef3fed7d2034489321052ce. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QM6N21937968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf930bc346496bbabeb8ac6de9190f6cc5ab56c786b56180dc35005d5dea24e7f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QM6N21937976.
Clarence Unplugged With Marians, Vol. 1 (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3560c43be9f1c0a79b932f91c1264648a9deb163026bc3873e2702d4ca0fa8c8. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QM6N21937958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b11e7da08cde32b5f62c3363977c931071cfd7febde479f5fc93c6b832826c6. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QM6N21937959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b653c9b118618c55687c9d8cc462819d8ba5d689f8a536300fe15d147a49b6. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QM6N21937961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462a1379eb50decf349e062f74c9c410ab44f5eed8747de417d15f3ab73869ec. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM4TW2213919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b880b45cc2bf0af69c10c1fea5d77a050a7d35a9786e149b1f6c2a1cc9058f. 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/USV291459673.
Marians Acoustica Unplugged, Vol. 2 (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ef57ff8ddb49a36c6053d9531ce127363b216ddb163b02fef6e51c2e8e3866. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/QMFME1592711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a1bb78ca9fe284d1cf62750bd81f93a632101f46ed7a8cb0a811f06a720377. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QMFME1592715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3054c06562f00a8101bd17fa0fd913373d4b3e6e4e151275aaae126b1e23693c. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QMFME1592716.
Clarence The Legend Unplugged, Vol. 1 (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919427654d00840d673d6ea2d9d44dc3f1c064f8aa58e429154b721df53f9d99. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:06:43Z), 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/QM6N21938249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32e9ef3444362bafa6ef3b0aae08d4e63e6d93a9391a1f05359d3b6082929e6. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QM6N21938258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6d9b5d15edc454a64e5796fdd90d118c19500b9bd0c30566d9178aa1fc06cc. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QM6N21938260.
Clarence the Legend Unplugged, Vol. 2 (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c05292638f308781514c8ba10f1947a55d1ff87ca4cdb305a11f99023b8148. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QM6N21938234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0ccb31b6dc559430ee5bfcc18d3f158627705ca465369397789f5c76c549c8. 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/QM6N21938243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc7e4f89f884a3ed81f0e0e487a0d44511b33764ce7b1c57d811e43125258ed. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QM6N22178521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a134948894de3f4682bff92236e875b1c210ac312f0af13e8d2868dc2bdeeaa. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QM6N22178525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b0b5188e5b8d13f42b85c0fa6d13f522e65cd28f3185731a970b1b7965a7d7. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QM6N22178526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5a2c67b4f29c8b919755d363d06317bdb17e1472adc50734f1e373aa197971. 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/QM6N22178528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85220140de0743f2ad8237dfce35ec3184fcb04dcd86d89f3f6e2b1155ca2a6d. 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/QMBZ92489928.