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 0xddd650673c8882544e420ca0a43f2f97a11982c90963667d1ad951b0f670cc23. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8e78854e-2118-4051-a4ec-f1cd7368f147.json and https://artists.proofprofile.net/proofs/artist/8e78854e-2118-4051-a4ec-f1cd7368f147.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 0x938ff8f7cb6b14e8ce4e69ffeed3cfae30a4aceb56aa030734a45f55e8fc2c80. 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/US3DF1436609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90ab16a573a039e0ef8db92bd693fc2d08b65eda5ab5c91f5a1637b89f7a19b. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/US3DF1436611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e7699b3af680407c5c957023a2892869b6ef246075d57f9dab27451225d56b. 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/US3DF1436613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149ebfc439bfddd1e55ad3f668de98fa9930982d1023220ed25debada97c09d3. 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/US3DF1436614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1c542d561513e7a6b4794c18568092e3c2e759898adef73051b000f29c8025. 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/US3DF1436615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af7f50970971e6bdac16123b60c9939c7393e6d1a91711cedde726440b44591. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/US3DF1436617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57b35dcdd2c07a17c24ae70c4ad0e611f556ba52edc07790205eae082a0ab52. 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/US3DF1436622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ac565eac51117e48c29486b1b0780861968eec0200a9ca34d0fa704670bc91. 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/US3DF1436623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e26fecf150c27a51b8198cdd6ab50bd2fe3b72a7f4cc34c600ead252b351a78. 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/US3DF1436625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab327cc7a194ed5ffc1693025698f8b8f75d8c7d6f891207466ddd78341b692. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US3DF1436633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc032cc3b240dfe1bb55ee5240c664198d6da5d7f580bb36aac420dba6ae8bd2. 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/US3DF1436634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016f3c6296efe0e06590292bc67dc955ac8b3bc716fbed9a45c5124f5fa5ab41. 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/US3DF1436635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5319b0936e9ab65ad75bf85c4e336ee792662f00b1b9e42a1fc1949f07dd67b0. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/US3DF1436636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58408da8a110150a53e23b5c7e5d6bcd207e9e478bcd5f63dce534f3b5d3255. 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/US3DF1436638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f3501c4a054a46769f3538ee3b0bb591551bc88d28ff5f20c705c896682b13. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US3DF1436644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf9bb0f6ad5ce3a2987faf45d08a737b085cf633de4ba6f384fe863fd7a0ad5. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/US3DF1436657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41682619d43044285333d1699e28d1ce2aad7ba21b22b3b9c8dd83965e6cf69c. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/US3DF1436628.
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 0x959ca3ffcf3434454884e224e0dab41e4cf1fde4857bcd5356bdc2c003269faa. 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/USIR20000708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7a0b39b7563dce77845691c937b0ac81868e6ea89e61e0a02b4b2cff907c10. 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/USUM71411949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf592261ea66712df1a9b8c85bfe53858d3b102444d2bb7fc21fd37ad75201b. 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/USUM71412400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231324fa987c3dd0a581232d21bb4719f9e97077662dabde9fd301151defc5c2. 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/USUM71412404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2d00c4cd594f1d3bb689b48d6e3639783aef32f40ce420e515e1ee511681a0. 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/USUM71412406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88f8b8392539fb11bcd6013b609fe8e8babef9830e795747a48b772b71937f5. 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/USUM71412414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8271bf0a4809c08a24e1c006b446cc10a47fd1f161ed478f78bc9c658df7ad7d. 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/USUM71412415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3267375f3dbdca4a0ec5035c80721a7be3a55dee93f83bdc371a46790ddec8. 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/USUM71412419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f4c046442d897bf7d5116375481b5fdb23cae13fa5e927b355f1e7095c9777. 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/USUM71412420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c35a67c666d05d8ec1798e19d86bb29c824704961522120fcb89b575e7570c. 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/QMXJK1100494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca48ab1564bb309ae3679b4da6249b976933db0232d8208bdfafac4bf1133ddc. 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/QMXJK1100496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ec33438e4444223d5381081ad560b2783691c874470d420c3f7a8ebd57f39c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMXJK1100497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f683305dd6f018ac2dc4a2b510bd65350ffbfa8fa8be143d17ab5aedac0847. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QMXJK1100498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95aa6557502b390abedac1725046d462c46d3e75869b2378d8f305ab3ffd7f2. 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/QMXJK1100499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf952dfcd358da3792de8d6f0def7e6b779e46240771c982a0caccc8f968b6046. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMXJK1100501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff782fa2bc084bb7cd38b4b62c1a9fbd7d3f6ca409a2661a152a7c83c78e4b53. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMXJK1100502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aef95b149ffe797efd542a0114ddb0ded4aa33e808691cabca859e26138daa7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMXJK1100503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb157f7c14288bd9e5f01be90efd24ba911d783141d61eb7e7f50794ed51cdc. 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/QMXJK1100504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04235168323ababb261df49b506c24ebe9fe6c1d3307c4eec65f697f71fe555. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBTCL1204693.
Goodies Old Is New: Bury The Hatchet - Right In Your Head
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9292d61fc6de8a700cd9ae39ed9d66e418672cca88928496e97756e24e2ae481. 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/USTR80300092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6706541b24ba683e2663636f1ca8c82cbad211705994847a9d2145fc5c2542. 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/USTR80300093.