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 0x9ef9237868b1f9655e4427e99ad94b81a0cee68fb7a6c8919563d1e65b859046. 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/c6782222-24f8-44ba-ba56-7c03f13220aa.json and https://artists.proofprofile.net/proofs/artist/c6782222-24f8-44ba-ba56-7c03f13220aa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Barril de Pólvora, Pt. 1 (feat. Ylsão Negredo & BRANCO P9)
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 0x8f6fdac2a48d507d85db6f6f4f07153d50c11a97389b2aaaab8d34bcf4dd35c9. 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/BC1ED2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42e5d20e4669e59934ca1e7cdf4f125a8dd409dc4283b5bc361ceda31668abe. 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/BXV602100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a02bd01b20ac58e33c9b4fc74a7ff2dac727ed54bea28707abbf211c0cca4b. 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/BXV602100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488d7accae1fafce73ebe7ea9da7808f558335b1fe2a33657f46b7f8b2619a29. 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/BXV602100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06756e47e8fabf3739b29754f4e5eb603fe92e11a2283f2a956cba97065d11c4. 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/BXV602100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ffc7dcc92d1f41a58ef660211c86e1194abec217efa09a2c301f8fc207e9ca. 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/BXV602100031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc3a922125b271de0fddac09401a680d59a0eec8600c07ae9ac10f0364bd9cc. 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/BXV602100032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65158ae4e8ef9c4ada140cee6b32015e6d0546cd5b04685ec49f422ce99fa06. 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/BXV602100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cc51d10b416dd50540c481a3dad4f7a1a3a77a921f3cc3a7290f56795de27b. 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/BXV602100034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf067f845f14308532874ea364f290bb2a6dfff5d144d393b72a8b2cc31585560. 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/BXV602100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010ec2f50aa7d70dce43a3a7eee16502e521dd341a248aa08fac0c1e207416e3. 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/BXV602100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52c75ea3c889b248b0894b91a3739a480468de9462473c43945b3aa9aa9c1d1. 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/BXV602100037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3cc2c27e6b958ba09e70a642282e07e0085d05588ad95bf1dd7a3a7d7b7d43. 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/BXV602100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b06a53d8cb7a73ddbd354067e650265463858a11bed4a2a0158b8ede70cc0d. 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/BXV602100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaedb7d2372329aabe3ddf09b9260af3bbb225b648dbe1a1f53070c482acbe0e. 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/BXV602100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e260f6742389b458b6a90ac6285f9d466f22facbbcecadd8b78ff986349b68. 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/BXV602100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b51c03fa6c28942aa2d3f18726119ae06efa445e2f25d57fe22b4cd4f594f38. 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/BXV602100042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3d99115230a6c3b4ef2060e3b782046d3dbce2ffe9ebe5476c011864646458. 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/BXV602100043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd339cf4ef326d79eec31f4e16c3d814cb87e10ba348a9ed1c48a9232c9ba296. 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/BXV602100044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ca75e083dfcc8198ccc761145ccbbd48e27a0f47be28a7e16ee99c0e767de6. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/BRYU02200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4304e87f20cd9316f89b85ef76244ca34ac4b1baeef187df5bfc87376401526. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/BRJWH2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02349f57e32cfc93f101ab9433bc93a3b5449ef9fcad51be838fbbf29ba67e92. 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/BXSMM2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611835cf5cc884cf8adccba02dbec1252551cb2ccbd1e8b058d2375eb834ec1d. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/BXNT62207980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b881fd0bf440c3e94855796a2afa9c6a61c5999d455df07eca37fd5510d362. 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/QZTVM2331644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88bd129f3495c24a406ebb7c14835b1166c439092ef15ee22b8a35cc4ccc9790. 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/BRJWH2100005.
R.U.A Edição Especial (Lágrimas No Deserto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2fe28b63a19617a6c51a50c11921fdf8f61d32b39219b298636c4f47ba9afc8. 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/QZGLM2143675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb055d9a77edb95b5b892bc79dc30325e8ed468ed797bf54cc8bedfcb677cabbd. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/QZNJX2198742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11fe86e953377a4d3517e7732677ecef1038b3b7e208df7d50ed14e20110d0d4. 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/QZNJV2176517.