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 0x14396fc3cb87a79a8b6cb27571565e98143eeb0c0a7a2bbf9fc82bf2513d7868. 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/b44baf0c-a3a0-4d1f-a655-d6872153b578.json and https://artists.proofprofile.net/proofs/artist/b44baf0c-a3a0-4d1f-a655-d6872153b578.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Princess Goes to Hell / Mantequilla - Single
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 0x83bd7b1b690182b4824320dafbc682847176c73ee6798782872f59bb41581b85. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:29:07Z), 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/GBKQU1662697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff9d8aca45a0adaa19297c34d6a88853332656cb184f2ee521092b71c39ab06. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:55:59Z), 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/DENC31800064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc057edfcfb00a82ada45dd25bd7aa206bb16b6e8b0c2d30f2f991152607ef001. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/DEBG51800048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40c372cdf8d8353eac6285278548e0d11c2f24cb06d3826a96cb233775c8415. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:37:31Z), 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/UKACT1912279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57f7bcebdc1c4b8d69de664b77c2b60fa31dce630a8634fb20e72063698bd5f. 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/UKACT1915102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ed6dd7a0dbc2deef43287cb7fa49481b1d3ada24ad53e8d90244b59de3dc0d. Chain 2 (Bitcoin): anchored in block 957752 (2026-07-12T20:53:32Z), 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/UKACT2010352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756c63b91d86bf68058b05ea0e1ea8a00c3bfb6fab617c8394ebfc56ac9154ce. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/UKACT2010718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716aaf8d75b709d6800700fd51ff58989dea891dbc0eebc7f907831df6867861. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/UKACT2010717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17a7a06399fc6e2f8261eef52c0b214f28c45476fb77484a9c4bba234bbfc0d. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/DEBG51800125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75886dc393c4550a918f381a8af59779f5efde147dae97cbede0ed369b051771. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/UKR6V2073797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab9a40842221d1890ff199af545d6ef9ad29e81b4dd93e72c1d508e28d5ccd1. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/UKR6V2071031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70c226c9b1b10c407b06bb63ea4d184989c504402654a8f79e9ee86b71978e9. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/UKR6V2076101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c35fa77263a0a4310430cb918cdfea1c901a9b45b9133f4e3981d28a83804a. 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/UKR6V2171809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68da07f03ba2ab83c7d94261c2260989a49c5c092ec3a50c57d52341bf776bd7. 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/UKR6V2175834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4df04aa4b7f56f186a466ed6aad0de5e30bca66448117ade22ea26ac2b8bf33. 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/UKACT2132695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2246b6384c93f5cd78b3000d087996e1a0055e12adc6b6955d45c1abe92a38bb. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DEBG52100090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8301add11ff74aedc707d683953257134ab27d1517c5431b4e812afeb9586a. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/UKU932230915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe188b26d8c0fff30454995e34cd4bd8898bc1172d570618fb7a6a55f225c6099. 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/UKACT2231860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa244ffd46d1b0d4133bb635b548aa5fdc57d2e95c8f74a2c909d8ac6e2a9bb38. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/UKACT2270885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf589a42399ba70d08934b12e4a0075216ec9cac8ca55579b0d4602779f99205. 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/UKACT2370711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5315c4f97b76c991e36a69fa64bf4ec6180a3777d262178640ccc2fcad88ea94. Chain 2 (Bitcoin): anchored in block 958731 (2026-07-19T12:35:36Z), 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/UKACT2330966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x369b1f13e7f2e1a0c44ec44e78cfe4898292f1ca4cd22858634b94c0d0ee228a. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T01:22:07Z), 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/UKACT2371370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a8440359574caa141f5b72956f6e99892571a8c253163ae9264aebcb4e7099. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NLRD52319298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196d589cdc788b7942f5d45d5a4251181c0ab4fbf0ab2764c6919f9c666272f3. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/UKR6V2321828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b435788e9102450eb3e4e6462bb372205c007213bc7ef5c61ef05749ac619cd. 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/UKR6V2322303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd38ceb2fb2d39e1bf958e4c9db8e7ab3b58bf2541ccb49c0ca8c86346d6973. 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/UKU932300294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d1e0b35287fee6e08ed822626e5cc025f7b7d1b21ea12101eeadc8ffdef99b. 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/UKU932400598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1327d14f844514d847fbe81fccaca306f919db1a46cf9fe7db559bcad9abe8. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/UKU932482900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a494c6a689f71b847685004cd881b31f72116091638d2cc1c3078d639946840. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/UKU932483258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d01a16734c2409f4f2a2076bf43807299d96ac72e03b1c2bd6cee4922b9944. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/UKU932483873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea62dfef02548b3e8e79de4f71139b215e783c6f41baed861fd419ef468b367. 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/ITBGD1900036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb175d57efb2640191931b71b7530c89fcd89a3c295e6f35e6d59370db3cd14fb. 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/ITZW52000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeca90337a8faba08edc4eaeeb94b779d756381b3c107a105ab7e279302548b3. 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/DEBG52100091.