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 0xba3eb6e791e8cc278e923c2daf4de990b847c7eb8b4869823b6e9174bd14317c. 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/0551e471-8907-4e0a-aca5-9fb4b7423a31.json and https://artists.proofprofile.net/proofs/artist/0551e471-8907-4e0a-aca5-9fb4b7423a31.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 0x4ff1fc499ae46539bc5a3e0595fbdcbfa11e52281e515e123e65f53bd059169e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USA2P1907193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970dfa075f096251b424b67a500fd022d458ac930e505ba592ebb372e919c804. 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/USA2P1907195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554240ca67b3c45ea1616c0d599bea0feaecef21770ed26f74eec0587a8c5a1f. 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/USA2P1907196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40008d83e9949c241c1270ba566cd60a88750c5926c543b3be95b9e5341e8df0. 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/USA2P1907197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c9f6702805982a0a7b76280315dd9df929f97c97217157d8c23bf258d99c275. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CA5KR2156674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b1cec30019212c5a0a09f18872049438076a4b3b3b98f74545246304bf87f2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/AUOM31100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a746beabdcad55236c1158e03e81bbe645c2974b70a4b9ce240a335aa5b513b. 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/AUOM30910003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a1339c139c880d7a90453768cd746f44c8c92c60b2e3836e2d470d03a87603. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/AUOM31010001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cdaeeceb2a2fbee4ea425fa3c2490922f3d463a55924a529d8f84449b37a0bb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/AUOM31010002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bec3ee90182dc5e02aff6c2e5db786da9191a4cab0756cf8333055f49216fed. 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/AUOM31010003.
Murrie Gubar Yugal (Black Fella White Fella Song)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6280993d133620fed696a6380de93661521cc850afce85c678b3f6d51e7f583. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/AUOM31010004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef393c190059ce4df6b9406782da9f1b81f09efcb7a79af5de1ee06687c631e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/AUOM31010005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c84ad8e8b3109827aac16099e74bd7f290f54d1815fb3010574fa641e6a79a. 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/AUOM31010006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313da5042e471ba9fbaa26fa1f925ac574a6fdcb90af5664141017de964f1d83. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/AUOM31010007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970b23ea5da00b9e329c50472aa56ceefbeff10eba0f288f9740a49cc29c5de9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/AUOM31010009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09731e95dce3116a2beebb240817c78444c05c7cbfb368dce255eeb065d8efcf. 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/AUOM31010011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034a237e691c87822e995e5a2c3c2350c011e39fb4e91640ef295abf7f393cb1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/AUOM31010025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6172e1bce4177a742308db25e7374809b4c13b16595eb9e80c00930b838f9daf. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:39:05Z), 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/AUOM31010026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7511bbae0662777c8eeda2fb95644bdef6e66068df04347e4d9086b126ac7e1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/AUOM31010031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d610541d64e185a5c8bc9542afa820907cd85a7b765c1c36623d692a899df1a. 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/QM6N21593569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6889ab7eca028a586657ac8b7f9dbafda335cc85f24d40ce384e886c5d7ba76d. 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/QM6N21416266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b3a5f96e2149c20949407641f597b747794c8ef2cc40ccc1ae3f503311c298. 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/AUAL10010017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5468dd555550b4e2f0c2c5c40e12b6e2d191ae4ab6fdfdf06c69ce5384f43656. 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/AUAL10010013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66501099d70a981a639f0ae9416c309f094631c4febf1c0fdc06aacb4e581a5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/AUAL10110028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a5c4ee11d25d00b0266072b6a46bf64021def3e34ec4946c755807e3fc5ed3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/AUAL10110012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8656c24a0f95b1dd55c6226046bffd5a8246d7cb8cf1134888e4ecb0886323d4. 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/AUAL10010014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98fdf46ae104e916e35ee681d469e4d46f852c3bd6836b7b4c88c7ea0d6db82. 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/AUAL10110013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ab3c335051a642b674776f485ba62687203c1696848184ef6ab3021431dc08. 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/AUAL10010016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17829c793b238a6f528433de51c3f1e40217febf1f0dac92cafbdd24741d457b. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/AUAL10110031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26a7582c5f8c0cebdbf2550b2b184d6549b9a7afcddfe26d7fb8537eeb9b9a4. 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/GBWUL1904667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a4d5e4c21327069c1d19a0490fe8ca8fa931c987d71b34c39fd59ab1b8f388. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T16:21:18Z), 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/CASJ40600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741a7d570ebc5b68347ff387c20956be0011dc9ca867c17fa0bdf9b12a5d433b. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:12:18Z), 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/CASJ40600006.