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 0xa14be92949b9ca7c8bc3c545e7bbe14ae7eb426ba27ce33b72aec5926de9b3e1. 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/67105354-c802-4936-b28f-29ba4b7930ff.json and https://artists.proofprofile.net/proofs/artist/67105354-c802-4936-b28f-29ba4b7930ff.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 0x615e6ad7d7ddb151b6e92a479371cc1d4f08733845dd7de0e905f4073b6b484d. 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/ES17D2000982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269e791c23c554d3e370164ec5dbac3f40e865db52c07ced4eb700d95e8ce462. 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/ES17D2000983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ae104aeb7836921fcb8ce9fb60042ad4c9c64d9aab5f395f0f9c6da794d79d. 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/ES17D2000984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f2fc01a98f7d54bd2e1abcc3935aef6b35402da734dc787e7fffbaca2da66b. 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/ES17D2000986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b4bca6f863d6aab312196c9ea9f24abef848beb3c0bac600911d2ffc49b729. 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/ES17D2000987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9020f7dae3600c3f6db4f18980e75000382f18905e068be63de51d4eaeb45bb. 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/ES17D2000988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3569d802be280c66691044ab4d35bdcf31fdcb0d3c33684d89393d233e2617cf. 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/ES17D2000989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc7cd6ed60ed5e17714023fcecf77fc6f6e9a580cc7afb2400e6f28395b4113. 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/ES17D2000991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e7971c21a366a80798b38a1a11c93430f7296bb85a5ec792d18ce93b19d1b6. 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/ES80A2217305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6298f38d56f51dfb26ab1c5741c80395447f0994ab3c7815e61807d6ffa9f032. 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/ES40B1700038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99bc5d4588b4d3c15a66cd92214a31d7d233e10ceb7dc9138299bb02d4af264. 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/ES17D2001126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821dc8fe828d4405fb047c1b74bfdd1776224f4db168606b216b2106a3edbce6. 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/GBSMU3413115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e20a85a9eb62198b365b4cfb61a601ae06031e7536d0a3b94a267897eee0b74. 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/GBSMU3413116.
La vida secreta de les formigues - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc8cbdb3e75428fc0052ec930c6d752647079a7c074948344cab9eeeda3cb28. 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/ESA011804726.
Concepte General De La Quincalla Catalana
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7453713bd9cb70f1eac49fa9649d7e5b3df856d64e3058d239c7943f1aef52. 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/QMFME2453472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09267499d2b836ea78c8ba0c5efa2f253296938574134919920d50e4433ecf39. 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/ES51G2400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a5b1db9b473b3f385982648f95fc6b1eae51605b57fbc3dfb49e72539ed980. 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/ES51G2400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e5e1da8e963cf33b2c585dc5b32cc2fa36a4bdad43eb55331e697edd933fba. 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/ES51G2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2113547442a8e15a83619fb0fe59269da47633e7feb4770a972b34a8b8c35306. 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/ES51G2400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d19eb97dc329ec706afbf3c16057589394f14c4039dd6560a32f527ee12f2c8. 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/ES51G2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272f63e0804780d535cd299f97bc8525eafcc9ba902cee81bd64c832af53adcc. 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/ES51G2400031.