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 0x267dfe588a61592910796493f7d09575657f351b0b7f059d0d575a5c2d44ff15. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6abd1f73-3b56-4b95-afc5-84dc26c8fdf5.json and https://artists.proofprofile.net/proofs/artist/6abd1f73-3b56-4b95-afc5-84dc26c8fdf5.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 0x0fd134e6a79c2d4b70db7b0763ff6db238d5302dd2a65376b555e0fbe52810a6. 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/UYM121602603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5439aac1e71ec45eec9d25e62dd3fcf1d1d6d0ce249bed8c3b132a0ac8992d9. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/UYM121602611.
Sonambulo / Emergencia de Amor / Karmencita
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89c152ce49e05634afd049fa1c7bc2f867f7d2c1b9b970cc75a0f1b17c8e7fe. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:51:39Z), 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/UYM121805279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ef943f9587e344c1758bc0bdbacf43d91cb57746878d71a64d2c8a1236c361. 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/UYM121806462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bbc729bad601da9d4178eeb52e77efe90f5783956f521a38462d5f82bd30bf5. 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/UYM121806482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf67c30a2ab3904c0796300e9435ee24238927019b03810948cea7fadef091d. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:09:20Z), 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/UYM121903683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a8f6e1f8440cfdcab9c311e7159afcc7d4f20c7d7013361606729a76e568e8. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/UYM123000337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48223e665406f900e21aedda4cca21c5209464e68dc10c07ac2af96ed5c288d2. 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/UYM123000409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270d4de1a13a893724161e4e5e34361b26e7ae1ef8d310560a4054f8619baaa3. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/UYM122401621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6194724544faa9e82dad14b194a78ea1628ce0b57d98fac6d570d735692d612f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/UYM122401027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f1b55228e7a390a31ae011b2acf101b9df79acdae90eda0ce1dde6fc7e2b99. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:09:53Z), 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/UYM122401869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91824eb281d5a1132326a774a71a7a0d6c6885ae9980c2d1b00f4e5de3443d4f. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/UYM122400752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea6935a4241253760f9ab5e85593228fbb188316c20acc385062b2c1640df08. 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/UYM122500310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccfd5f144bb1b7f6068bfb0fd596fcafa456f5b2403b65d9e3a2782f2bfe94a4. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/UYM122501234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd156dc14b08a2a89ec89e4548093004c955cff5fb50439b8d2034390521eb549. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/UYM121902640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075543e1457af6434a143ca6c30c60ce007d61e3c94caa8293eeeded110d2db4. 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/UYM121502022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d9224d86562fe665cd21f3bfb22404b4079068ab622f7d5e7b020c674a01e7. 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/UYM121705296.