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 0x36d9273b13fe9b98f0a02621fd9cc2aec941281bfc7d0696bd9558c82c5449bb. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/28b71f1b-911e-44e0-b065-5c57d0bf9ec9.json and https://artists.proofprofile.net/proofs/artist/28b71f1b-911e-44e0-b065-5c57d0bf9ec9.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 0xa8725a17a050c9272858f4fa14848dad583ccb84db7f4433c68b39c8b53477a5. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QM6DC1413253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e19717b00ffb23f4514e829f93ac67ba676f112891f35f440a8eb8ab984dbc. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM6DC1413254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd102ced96d4a44017425e2d5d775b7c7b9af89fedb709b8335df91d600a21c3e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM6DC1413257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3b747cca73b2cb70a473e73e46b263ee16118f7109e188d78c565ff2d1725d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QM6DC1413260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde698e0a3a3c8d0f1a5d4f47560403977de578ce2680c06d676e013920239c25. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:38:46Z), 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/QM6DC1413261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1aa67159cd1d6988433b760e9571a1fc50b118e78e1bb9bc169bd413d716c5a. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QM6DC1514358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba2a6627ce8eece416267a7e35299002af570bfd8eb08d92c3d7adefde716f7. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QM6DC1512749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59593731989c4afc1b6c511337501a6cb95262c62d7c955de635884215bd6fc. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QM6DC1512753.
En Vivo Fiesta Patronal Santa Catarina Noltepec
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ee1d37b5c6accd1f3522a318e377482465b48e812f93d445edbbc171540819. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QM6DC1880944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e0a5c3fb572bbbc84f4c4fefaeb6c97f8150f40bd76c6feb4c4237c99a57b1. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QM6DC1881095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e2d6f90c7f6fb850d49015b7b1d8c24fb3d8d21656a1f9fd91ad167a5f7a96. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QM6DC1881097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2817c3703ae28eae6e01a228241f6775ad3fbb2ef0630294e80ced08a4d390cf. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QM6DC1881183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d09dcd0baae7f0d2ff6256f744b9cc1ee58ac83ce7b9844c16ac54ecefb87cc. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QM6DC1881193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197f876f9a33a2ef900322877b1afa4cc0e64b1741d23cd95c8dbcae271ebddf. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/QZNFJ2204698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512909ef573d33c47d50b3b86ac64e4cb89bb6c180b310161e145edaff687f40. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZNFJ2206860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c67d41930c4fc61ee103793b859cc580a432519de7b7bb84e0eba34f8a9a63. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QZNFJ2206861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77ec6ea840cada8137ca4ee94571a2d0d9ef89d3782cae29afd33d09c4eeae7. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZNFJ2206862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e577345ab5c62667788f7073f95c91255c29ab8637cbad4858beac09dc25351. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:28:52Z), 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/QZNFJ2206863.