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 0x791474f1daecd3ff52efddcab5bc3fce64bc5b9ab6300ae10a6afee77442c3ce. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/537638bb-7369-4548-a776-7de9c5e356dc.json and https://artists.proofprofile.net/proofs/artist/537638bb-7369-4548-a776-7de9c5e356dc.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 0xd6fdcc70cdada7bd52d887e80efd45113a4ce495c20b518b6afec61a5e3e6700. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/US3DF1825848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa623b1cb65a74d26a7d6358f32aad7d0f68c2220da6c577e9d09bf7e450a9583. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/US3DF1825849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d92280165671ee12235838bbb91980721b87c411339284923786844d9454b0. 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/US3DF1825810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66abd0cbb50b56010055f4b0b906cd9bf8b4bf5e7c838b52f3f2c7829e9feaf7. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/US3DF1825822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0167aaf1456adc700ffc8428fa13a64e3a95e6fe0abf8433c8c38abe654021f. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/US3DF1825823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ee23eeec9582a871cd05a91764d8c3b56660824199cc793c5f1d05cb2040fd. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USDHM1910218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145ab187e38bcc447adcf4fdde5b19060205d5715fa0e6435c3f5b158c6d0c6d. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:18:08Z), 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/USDHM1910223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1488af3291eb7d7a410be0b207585add77c64181f52bce802ac511a9505ba6. 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/USDHM1910226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8010ca26d80269087230e316fb4dc4847d6cbac1f1b0bbd9ca3459651d2b2d. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USDHM1910229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108995ad67230f220e81fb9a3c0204788fca71e2dd68ff77b9396b2f837ed554. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/USDHM1916216.
Martina Osorio Tiño y la Agrupación Vida Nueva
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930cf00f3b62edf3da8fa54a551df8c8957d62e83a518da9e307e8b4d07364a6. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/USDHM2020391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276eb180e05cb280060df8ce6e0cff7211efdc8a3f974d5a735c081470235bf5. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/USDHM2020396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12fd4dec69b0dfb22ad4c4efded544b0951cbff30eb531cfc5acd44db4d3981. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/USDHM2020400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf580803ab9fc3ed7f7b9f7240a68b22a79e3da2da0a573f96ed9aac2d1a87108. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/USDHM2023516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88f986a90e99637ef91d15d4a1ee546e52cb61e5db80508156a760afb3f396b. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/USDHM2023518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecbe1aef710d97ac53d3635ddd886ea7df714f5b4fb22327f3ddaeaaf441d014. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/USDHM2023522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90555636cbe6fe4c2932609f57cd1362a3bc4c40a6f3da73105619e12ce4d2ff. 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/USDHM2102828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a54ceaa12c5021a44b83009febe936b735525766f39b7ed474380a9a8c71d8. 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/USDHM2102830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06d02d3ef64026d8467c568a7f5d0335c252cd440addf3aa73e6e088795dafc. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:21:43Z), 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/USDHM2102833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b9872cc1227f5bcaf0c86ebd0a2499891666cfd4ea24b2b2e063f08b6a4aac. 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/USDHM2206876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b20c0e6760de1b67d26ac4aaf0d8e2e9975e9b0cca56a512f4aaaf0cde1b1b. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:29:33Z), 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/USDHM2301616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x051dc69fd170c8d0b8098c25e2f91c5d9a428b772b55865c262cb81c8999289d. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/USDHM2301617.