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 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 0x6f5a5ed1aa8d2c7fc94b79828ae3df3fa05e830b5ad3ba9609456d45681d621d. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/39b6c4a8-7404-41b0-ad48-af882694e55b.json and https://artists.proofprofile.net/proofs/artist/39b6c4a8-7404-41b0-ad48-af882694e55b.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 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 0xc154ed0a8d186710ec88c9ee971b849961a0b2c820b8ae72da2f6e889d32145f. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BRD9I2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00262e4b6851d53764f740363f0486a5a46881781d1a5b93cc218a6744957f8a. 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/BRD9I1800048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5dbd81c93bb9b0b34daa4e3410bc20eb53440cbe5e809f4e498522780d0c636. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/BRD9I1800049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188afaf06a5c0c09b535398e99e2fd56ae6cc5c295e792951affbea30fb9c4c3. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/BRD9I1800050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3e7e8f49f2dd08d37ec3b1a99e8509e9f3c347de679af0765f497c23533159. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/BRD9I1800051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99f7b27eefce1c4b285003b15e54a5afa240b7e103836469222124f1a30511b. 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/BRD9I1800052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e87f2f2dfd1935c85f11e49fe5ce218b22af153a621df931aa47d493312105. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/BRD9I1800053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59f7ef21efaf520272f81358ac93b837124997df3f46559b721582101f50579. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/BRD9I1800054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb623fad6323ca3d99a3b8e07b8cd65221b9551f52b31648be53a1f9a0de155bd. 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/BRD9I1800055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6838f89d2b5e6e451bbd89b08d806f5c128cf615a050396001067fbd0fedab01. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BRD9I1800056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33486879b9cb387752d7655e3035dfcdfc8e20418d7846fdaf63dcb0584ef0ff. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/BRD9I1800057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4621a96c38c840ae347355e884a477c33aa1985c8cc2733c2053d02b15f239cb. 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/BRD9I1400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf20e5700039d255efce542e04c54fac0fbb78ef77c5b15e3612fa7d28ed0171. 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/BRD9I2100003.
Flying Chicken (feat. Thiago Rabello & Salomão Soares)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670ac4cc2e9fe349983c69a28f0322b72c59dc2271dfd9c043ed2e35f8d3447d. 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/BR56L2300001.
Sol e Luz (feat. Thiago Rabello & Salomão Soares)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b922385aa3da16482a7333931741c30b312b9d22a155fb4accfb69ada49efde. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BR56L2300002.
Barulhinho de Trem (feat. Thiago Rabello & Salomão Soares)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c6c9d8d3c2071768c62bc040f2a705481fe75762456a02908a4c8ba27a19fd. 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/BR56L2300003.
Because Of Our Strong Love (feat. Thiago Rabello & Salomão Soares)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca11ba7f3e7331c478ad670de453d8151f29d71b2a16989366a412613c19beb7. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/BR56L2300004.
Paz no Mundo (feat. Thiago Rabello & Salomão Soares)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a07d042c5aedb8d3683a98d1a5a89b8b5a7b8535920d9df0561fdd7a25dd29. 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/BR56L2300005.
Endlessly (feat. Thiago Rabello & Salomão Soares)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59dcb971334a803b378858dd2a8ad69089a92379e89e676f9fb54966cdb0df5. 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/BR56L2300006.
O Som Vai Conduzir (feat. Thiago Rabello & Salomão Soares)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab28ce24cc04109d175e0c019846751444b7f303fa6f5ac0a971385e12153d1e. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/BR56L2300008.
Mister Américo / Bolero de Mãe (feat. Thiago Rabello & Salomão Soares)
Mister Américo (feat. Thiago Rabello & Salomão Soares)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4113ff5aa6eecdb6313719d48cb96a9be748bb18e434924ea2b454b549e53863. 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/BR56L2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b922385aa3da16482a7333931741c30b312b9d22a155fb4accfb69ada49efde. 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/BR56L2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4049696a8bca39473cba8853817fa1a2b8476f240ba45be98dac3c3c37c8a0ef. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/DEPH52000401.