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 0xfecc39af08d647a808aa63fdbf65a4443b6ff00c41d48ebedab8e73f23f7978a. 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/b9a6dd8a-da46-47d3-adb6-97627d11b8bb.json and https://artists.proofprofile.net/proofs/artist/b9a6dd8a-da46-47d3-adb6-97627d11b8bb.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 0x41c924f10bb2022534f09f7841fa3f830e6354ed3887ec09ffac33759ec674f3. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/USANG2064908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd528fb015d8f6d3a1caae7b27cb0d186b5a66134c1fe5b7b5dbc5a4bd823bb. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:41:30Z), 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/USANG2064909.
Someone To Watch Over Me, I Fall In Love Too Easily, I'm A Fool To Want You, Almost Blue (Dedicated To Chet Baker)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9489da9a0399083cd30d4898da7de400dd6d7400fd55f067cfd9ef22cb4628d5. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:54:43Z), 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/USANG2064910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462c05084f8010331e4ab09c3575d2ec684a5b92be82c5a6bbabd221f6dec67d. 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/USANG2064911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2bcf801f85218bb5df4834ee9878773ad806bf029290c6dfaf42f8cc4b40be. 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/USANG2064912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392b8c3c9199ca789a71eef7d65d2d3bd49515c186cdad4ceb5cf57c51341523. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:42:29Z), 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/USANG2064913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8e29b419ca674aac5920ef35efb781942a68cdd56503f775b9f6b38c04fb22. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:44:08Z), 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/USANG2064914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607a0d2cb78801e158425a916c4dfc779c2cb54e36824986e97ae01aa4d7bafe. 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/USANG2064915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e0b30b316bc969dba5d13f575dc4098c1f111785b33a7af4c606cb7f2ff65b. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPI291059801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504234fb704557c2b290ba68ed85da295ebb13305df25d2bbb669793ce703fa3. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/JPI291059806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bac67ce8eea3b91935af66fc3b1f6841d9a8eeb5ddb066e6992adb374200b4e. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/JPI291059807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dfb460078be5f935a9813e9b04d572a520b3457d59d38772e59c0ae3c9d2cf7. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:09:15Z), 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/JPI291059808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd02b8df52a3f5f43833492e0c5187f52214e0cdba894abb59394a8fb2b58b6. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/JPI291059809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154c9484d59f71bb7600daf4215b618ca74383ab48bf8436bb74c1522e64411a. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:36:53Z), 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/JPI291311801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16228cac50089196c8eb329baf3e25cca79f6dec38dfd88412d0d673a28c1a7. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/JPI291311802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f155e25c7b91cfbc497cf5ef22be1e0bb7c6696461860b6c2a71b7b5b75e82. 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/JPI291311803.