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 0xa249e80c392c42d2648e918a37e85aa3c74b922ba44636a9a002966cd6bcb676. 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/cb92e3d3-5812-4e1d-85c6-36cd96d8f3a7.json and https://artists.proofprofile.net/proofs/artist/cb92e3d3-5812-4e1d-85c6-36cd96d8f3a7.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 0xb2e3434275e7b36224006307f9850d93cdea2aaca354075a538cf4e2399d0d8c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T03:37:37Z), 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/DEZ651202815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b4cbf6de35c82f43e5d4602bbe9e64673cdab77061e05c099462ae8cdcd8f9. 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/DEZ651202823.
Radio Havanna No Estúdio Showlivre (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfe03cf36f6c5ba6eb6046b18579d6da626d53bb76f8f04770964662fd7d595. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:49:14Z), 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/DEOV41701114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8b9dda37810d8dffa07ef3893acfc1e79c3bf24f0cc0914250ab5c848b7005. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:55:50Z), 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/DEOV41701111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de59a2caa786774d55a2d8fe2db0d0bbb6c9f3255154fe31fbadf8296a8abff. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:56:36Z), 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/DEOV41701115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22222bb38dd0c4de4a4a68f72286c72c5aaaeda9cc579dc11fe304a96f7b21f. 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/DEOV41900871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5319c23d7492ff4da182ec63abbdd812277ba1778f9606cb78cfafbcfc85d6d3. 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/DEOV41900872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe4794a126ec99267d7dcb77c2302f62e2cad9af97b00f630d48d5a52c9897c. 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/DEOV41900873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed184f1515c437eb280aa1c4080a03631b5dadb50b76b402e951bdd17400b72. 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/DEOV41900874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x228dc090634c704df82a40da189047a5a357028d7aa367acb18e2a635745e566. 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/DEOV41900875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e06cfd4cdfbdf3bb0971a051edd5a4607e02281e16607c5cf17ea027a9c5b04. 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/DEOV41900876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981b6387b80c2fdabf23d5f05bb2bcca581623d19421991b51f346fddeb99f08. 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/DEOV41900877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d14029691d69106fc7ddc02fdf2ea0d64acd0f12750944245d1338b55b4586. 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/DEOV41900878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8703def4683d240dbb0b952f11a3bda4eabec117fd33fa3fe7b96456f36543fb. 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/DEOV41900879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc753f3e9aac6239f9849ec72e701f341d8d2768360a97e9ddc87649b8dbc3b7e. 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/DEOV41900880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91e78e6265ea67546ac762eb776194594c9e16696bd8a50b219d9f6ce2b919d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:41:48Z), 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/DEOV41901037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7539400b31d1cb037194bc078b7574113087d76cd8df0c17e31e9fa46e96382. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/DEOV41901058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5901b8ef9491a437855ffa5c006c91b20566de4f7249c5c6e7f68587de430e6. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:02:54Z), 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/DEOV41901060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c21a51ffd8098c4938122528f3574e67499660ed3465037b40f9f120be15d70. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:10:53Z), 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/QM6N22261474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c905d4d7f568373c9c3478ceda8a2a50e243bba24d35ac6a58bf73888d0e192. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:26:14Z), 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/QM6MZ2282343.