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 0x4bd93d1d97e4b9ad67c2fa99e8ff311f8a0090c3084588c4e7868715de8d22b2. 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/83a7bdaa-16c0-49f2-b382-e7dc32f16c14.json and https://artists.proofprofile.net/proofs/artist/83a7bdaa-16c0-49f2-b382-e7dc32f16c14.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 0x28964a66d879a738a18701fcb0e41cdc7347088423810d764537f012b48f4322. 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/QZHNB2037828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12af83f7425bdb830322586c0e3d324c91f4bea23bd70e7c5382a558b5bc4c0b. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QZHN82070134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb809965b61a19da946e3e8294f8023ee02fa55c8447a77693ed9bbe136faf12. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHN82076365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1ec48eaa74ef63c1547650bad2a2e32d8d3b18e9f9e5e2909ebaf88bc9cb3f. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZHN82076366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4011781da3c2aaa2f4b25f412dd18e90d23a1611c8988e7af8cc926b650e4ab. 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/QZHN82076368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67872622397a73367f156222e31eb0d5432b324be9978888c9cfaba8f9cda065. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:47:04Z), 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/QZHN82076370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb56d9ea87ca897e5ea794fd09ef129e22e6b0299f3ebcf004eed85d2a137e1f. 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/QZHN82076371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290bd9f02f907eee63953a43cc9a90b228d87a0d766f646507e76dfc7aea32a0. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/GBLFP1894716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd801d785b731bfaa91976ac06d3b2c35925d3ee5e48d666179aff07d5382a25b. Chain 2 (Bitcoin): anchored in block 957611 (2026-07-11T21:33:50Z), 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/QZHNB2046703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0875ad01a9b92eb6f18ec616fab9893edef090bddfd8d45152f5d5fcefefc033. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ESA011916782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c2dd9bb8a8fc6d3979843fb45ea69b112f8f56eb83eee85bced510e4ee0a69. 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/ESA011916752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f9f7b01a27408f924528b441676b5c4f7acd6a17adcb8eb881c73f7bbe31af. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZN882072770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73404adb10217915f38ceacfa59048de2cd7345ecdcd5044acc86f80003f0fa. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZN882072762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b5c1e4d1f319ef5a6e54af6030611faeaf006447ef1f9347b8a7e00b7dde52. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZN882209458.
Quién Supiera El Futuro (La Vida Futura) [Nueva Versión]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ab6c4f4f02caf133770f0d78a0941beb8883447a25865a33c124679f602367. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZZ662316111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9835e7137bdd981559636b26fb3eccb6a2e3884d5110c8cdcd2fb688e5fe9ae9. 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/QZWDW2502664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0d31ed8478207e6d00b3f302b373da7b91dcb89d2ffc414de229ba93df6c3b. 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/QZWDW2565386.