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 0x3c58df29a17b1f24c1638aadfa85367079bd396aca36b205689487be67ad1714. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5d1c6c29-f80c-440a-9d50-2f8879c967f0.json and https://artists.proofprofile.net/proofs/artist/5d1c6c29-f80c-440a-9d50-2f8879c967f0.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 0x867573d44f288461812166a5e0efe1b033c38951c2ff0d667c18ffba621b8b8d. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:54:56Z), 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/SE52T1800107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a0f793e0a8201504f7ca75d94bb6e708129d06cacdedd2d8211d90842b5240. 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/SE52T2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5e59ad3578d1b4018e91c35df3a92ac80df7d5adda9ef8cf413bbf3d63e49f. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/SE52T2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ae393f1a4b91ecd841b1bd2f998b70f118393d7680558f886d5ca1e8ab3380. 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/SE52T2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45dcf2aeec191749818c9c9962a14ca46e37cdf98add31df813e1ca98384acc4. 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/SE52T2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e48538f626460f315abf6ac2cbda7e118cdc1f732d86018012f0e213fbf9a6. 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/SE52T2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1efe86d7c16e5ef6c12bc5490328e57b2850a863a72814335995afe6d6c69d86. 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/SE52T2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533fed8648cfe0a904b271e9241677d877577a09a2bd30335ae5671262395081. 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/SEWAW2100701.
Can I Change My Mind (feat. Moneybrother)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8951863472cae24c790cac4dd50b8834d2ed9cf32957daa716a36aefe002ecb4. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SE52T2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71402a1a9bb60efddb9f46101d59563e4acaeaef9f5eda11e0b6d01d2b3f5209. 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/SE52T2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd0b7e653dd3f2291dbd015b514e6be8882241cb7e580dc83e9d1297a772eab. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:44:48Z), 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/SE52T2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25077c5541343cc48db80aaa1617373a2331ab04565c8958ecbf994e4073923. 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/SE52T2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16e428b1c44b5771da9ef0714d7a97024d543f01c45e738b89a47aa64cf9f34. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/SE52T2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08891721a568a5fd3e4bb0610b5aa91796a82a19dbf9f06368a83b2bf6455a7f. 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/SE52T1800120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad58c5132b17e0918204447bcde40f278ede811d7124e53a043cfcd5bd77a983. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:18:55Z), 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/SE52T2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf161614b5ecbd693b93debc1f920bd132e01eedc94563e0ea49b0a009ba921. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/SE52T2400001.