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 0x36c81036222f90d46d9a211b6180d77c039da9a81267cba4418dbf03aea15773. 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/36f135ec-bd20-49bf-b8a8-d04bf86c4abe.json and https://artists.proofprofile.net/proofs/artist/36f135ec-bd20-49bf-b8a8-d04bf86c4abe.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 0x446cdf204cb8bf83cbfecf2d93724a0319f698537600dcf2026c8b94edbf27b6. 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/BX4IU2319239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99bd66dcd14bc7c2e35d32e010109e976ceaa61328503d72808f1329d98600c. 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/QZNJY2210138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa071e3b6bc5fa6dfc3deed6501eed77cdff4ae803c7c1562cb3c6e024fac14bd. 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/BCIH82301216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111bac15a5edf215e0b37440426bd1d350858062983cc0d405faf5d787ebbc7a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMFMG2367733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x783f1f90dcac2959ffa4df103a1602c2e914e07be10179f7e777d31e344f8aae. 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/SGW502361720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585f975e1a24da35ae8fd1aac6c04676b7f57baa2a9c03edf98506eb32ea14ef. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZGLS2466673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275fa888deb8051004cd22602588b8c581b3f3601a7bc0e0b709f999c62b92b3. 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/BC3PG2206017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf230872e3812bca17b17a65c2ac4cb276417983555cb9f10f0d52401f429862b. 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/BC3PG2305887.
Set dos Cornos (feat. DJ Léo da Dz7, DJ MAGRONES, DJ MENOR JM & DJ RAFA DA VM)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd03af6068ae5be5c399d6b9d66441cb06ec78d31c7ec1903d2826658f82679. 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/BCQ7H2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942ef497cb29b6b72b7d102fc98c23b2fd8440959d51dc1a307b4af068c742cc. 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/QZZ662493328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02914db536af52b3d029d302ea992daeeb2281eec9691cbc1d3c999475e7f799. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BK2NP2400115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4621f0167f9054d38bc0538d33093eb3609b8203a2bb95c0caba49b2ac87d25c. 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/BX3SG2200193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8cd18b35ec370ef4c7586668311f7c8266fd88bdb0a156e5505e451b2232c51. 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/BC3PG2402354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68300b1fce368d27b4bae19e588c0ff7be24c939f803d9bfe756ca367f1e29ee. 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/QZ5AB2301887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79e64149facca052042804ccf7900ed80b4e662813c5295afdb334ce9215dc5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BCIH82202518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50c5bafa821c5b30e3c29a61e992da8331c529974b1d5019eedb5dc6911f058. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/BCUWS2490190.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5779ce636767bdab3761e9ad4855e621f068def3feb86caabaa3e42f9a201b6d. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:20:14Z), 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/BKVH52400173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe187c55756c8c99b05597519ad3d70f42ca8e1b70711bd971e6acf162d4d9b98. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/SGW502371174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe894cb857f4b215f7b5b10a6873ee366e4cb97241f0536432223b177673141e. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/BK2NP2400114.