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 0x5de567020cf7e23d5cddc819299b3d97aa9eb5061150f9189e2c2056d800dca1. Chain 2 (Bitcoin): anchored in block 953773 (2026-06-15T10:40:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c4ab9220-6c3c-4dbb-abb8-488ff81b509e.json and https://artists.proofprofile.net/proofs/artist/c4ab9220-6c3c-4dbb-abb8-488ff81b509e.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 0x6bfe77967de278724485af1f53c5e0c09b2af676eb45105af45381d594cc92a1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES29B2300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d6dc84cdb8bd2aca8f2b9037153b15c0824e238d6866c7ade7a510a903fda1. 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/ES29B2300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e767d666d3a055ab1b1c7d253357fe911d4daa13c21487dbbd48c6dce1b871d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES29B2300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b5d5207b42405d377aa47e723929f8cdf221bf305ecb91a757cb039d8a6779. 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/ES29B2300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb71bab7d3399bca3787374b96f39120069c423b56af3af2be2cedbcf95aaae. 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/ES29B2300049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba40eb01f698d02a5e67b2d0659d5d3330e1389e0b3538e06ad691c55810f40c. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ES29B2100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e50b846279fe42720c33a1d42afba77c8e06320e786cff8dcfd18b69af2d78. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/ES29B2100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6c9f0e2317fc19065b25ae36b8c08cf1361cd2f3014a20c3eb33d11b207119. 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/ES29B2100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d76db5b82a5c2dd891ae3f635b3c4e61d14c8d55fdc701a25663b9520c8fc9a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ES29B2100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d6dc84cdb8bd2aca8f2b9037153b15c0824e238d6866c7ade7a510a903fda1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES29B2300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e767d666d3a055ab1b1c7d253357fe911d4daa13c21487dbbd48c6dce1b871d. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ES29B2300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d76db5b82a5c2dd891ae3f635b3c4e61d14c8d55fdc701a25663b9520c8fc9a. 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/ES29B2100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e50b846279fe42720c33a1d42afba77c8e06320e786cff8dcfd18b69af2d78. 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/ES29B2100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba40eb01f698d02a5e67b2d0659d5d3330e1389e0b3538e06ad691c55810f40c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES29B2100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d16add93240a00119c927141ae246c2c8b3a2afb8a90d34e477556924b5f7c9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES29B1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d16add93240a00119c927141ae246c2c8b3a2afb8a90d34e477556924b5f7c9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ES29B1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39cf1285fb8edfc7e22c8b9fa5660b841a6fa9ca6996149f7599704e96348ca0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES29B1800005.
Amigos Hasta La Muerte (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71156295be0b00e8d9afca3381c03af7622ddc3195b50d65f02a8f1e381b566f. 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/ES18B1703902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732d9c1204c45eea0970a1b1e62de852aa8265d1276db495fd2c998f98face7a. 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/ES5022300561.