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 0xadf46065d3d1a8b347483f2bcb34fc0b3a75a0f25bbc2d2247d4d00bdbaa0cfd. 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/bb5f3e25-72c6-4025-8436-3c8b0ceb7f53.json and https://artists.proofprofile.net/proofs/artist/bb5f3e25-72c6-4025-8436-3c8b0ceb7f53.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 0x7c903114c8eac43b6f3be8cf7bd421e04e7b8336c594c44f820f6bc615cd54e9. 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/BCIH82101489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b78b175f10e5ae67c8e091bf2383712e2fd5c316a510904b972998dae53673. 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/BKFUX2301592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057faf69cbcd9793b91716044d1c0603cab36cb4e24cbd1be20b997633f62eb9. 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/GXD7V2320997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e723fa71981fe0635f0f5d7cde884fe9f4d7fda411039b05e7bf659608db37. 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/QZNJW2457588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63c748662e2b9f6ee8abfd263b0a18593c121ce402967b3673026ba3cc85b67. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/BCZ582400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c16f9fab3795e869d7eaa85c998ebeb726a2bc4bf46210ff3a20abf437a293a. 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/BC3PG2401044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05810d01251d23567cfc4248c19af101e469358daf19bc68fc9beb421ff7c903. 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/QZ5AB2481979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06cf6bba1c7fbee8d565575d9670f013ca804d3426d2ec2e090ad77c2261506d. 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/QZZ662358046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3e25dc21985d498e36fad01a262b3b2fef492719ee68670c315d542e7a7680. 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/QZTVM2391230.
Na Intenção de Tu Sentar (Slowed + Reverb)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8de4df6a1f5d9f0aa8ca8f853881bbe61473d33dc3ca7020b94665a06d8d98. 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/GXBAV2317601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7207cb62bdc1cf95f318100366e85c2e23fab10794e93387dab74dbb1cb9dd4. 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/QZTPX2321558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f012ad668155c08911e51461529c91f6a205afb100199da93d2f5d8074ad66. 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/QZNJZ2359945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c30095733992336f0d0872596849298e61e22f6f8e3c2ce1f1b1c2c675b5e8c. 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/QZNJZ2391469.
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 0xdcfceae67c74de2c1207aac3cad53659212d818f90b2229c616e7b84fd562ce2. 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/QZYFZ2348354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98db35d2b5b63eeece9c55462a2fbe7506a4a0887fdb351ac73f65d7f9779fc9. 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/BKFUX2300346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652c4670b59af57655fdf7fbf95f29ab01519422fbd25ad28f9261091c8dc125. 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/BKFUX2300315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26a8818b62be6d2cc4a417b4980c31321df15ddaa4bf2baa7db4c7630746d32. 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/SGW502315624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0a51c6d41205650f1339d4f8d2c36a1d13f05064e14c6829aab2d26a9f9564. 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/SGW502303198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbfc8d95fbf9fe1fa351c2479705481b2c85b7e97435f4b5dccd59e879b3e068. 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/SGB502258152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c8d6d16e510ba45e73ce4215b0653e4a2658be7d57ce28ee9d8d2f777ff8dd. 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/BCHBB2300051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d1caff23dabf88aa09961b01632a05de159f4de33951b80f519a243349766c. 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/SGB502259771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866099be4594ae8f418f0275c17d78e9bb4198d703d440052ac613b75ca9325b. 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/SGB502254607.
A Última Faixa de Som das Sombras (Slowed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee405027013cfbfd14aefe819ebac646878c55862d9988c001265ed3bd5207c7. 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/QZMHP2048241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b9019b0a870e3a4bcf0de80b891af6b5c7e77c2d295303489ee05e911713d8. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BC9MG2300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22c811635199d02c07c79ed570023071e7c24be5357a7d231ddcf46d6668421. 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/QMFMG2367752.