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 0xefc89d6d118145196ae40bf990eff1b6e73220fee185026cb229065773378925. 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/9ea6aacc-ebc2-4b4c-85cb-05f1e9f48d28.json and https://artists.proofprofile.net/proofs/artist/9ea6aacc-ebc2-4b4c-85cb-05f1e9f48d28.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 0xab5a078f96addb42472561a9b6a7854b23be14927706b74824233a4bf4f1b232. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T18:01:37Z), 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/ES71G1945371.
Redolés y los Ex Animales Domésticos en Shile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec30ae57a7ee5eb43d6a9d7f92dade7b4dcb55446727a6103407b7d561da0d57. 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/ES71G1945355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad61fb75bdcdd8b070a493e153479e9580efe7701fff15ac147442c0ce96c985. 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/CLPP21000262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeef10b86589dbe1e115771d4df2d879a331604ee20783bc200da9cdf8e5251f. 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/CLPP21000269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c728256e8be9ecfc4115be2e23dd96b1c3428b56fa4268e2402981d9e97559. 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/CLPP21000265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5526ea53238f8ff499407cc9a0ac82fefe37424756c82be42ded533d102202d. 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/CLPP21000267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205f0b3ab1315aae91ae74e6bb22d7d661bba621718b25b0d35922a27b9feecb. 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/CLPP21000264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea8909d4f0883d22ee52ee4da319883fa51aa828ccd7d22ed0a0ec6c8db4ecc. 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/CLPP21000275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf2f55b38483f5c0844ef3a513d34bd9d68dde3860d3bc71cf4a491d9d1085c. 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/CLPP21000266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e6a1bfe34c335312c2b4de58ed2430bae0cfd601c7fd462a9a3ca601b834b1. 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/CLPP21000263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5ec45861ce1762fc792715350fe90a63ab3bc56382510b6403c158dfe01d26. 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/CLPP21000272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29323d02f7f9d394447d33f5f716cf1ac3b31d90e0175f9b2a73d8ce53fbc5e. 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/QMBZ91323284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c098aeebb48cfcf6dfdc65f339597faa1253e376ff9786f2fa6fc68265ef443. 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/QMBZ91323286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa908c6f270e23fcce648cf21599ba848cc4cb273cfd80d2a2cd4383aca97fe0. 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/QMBZ91323288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129efaef7b01ad502dcc8c14e060bfce7adf4be27f5b460f7ad49a31f7c2a292. 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/ES71G1944877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cde467e717c2be774b633be2aa3909bdeaf7b1119c2a21c7f2b7430a9b0048a. 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/ES71G1944878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d1b2c2ab78574ec133b24a82fc9d082771914132334bf47f480190345203ce. 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/ES71G1944880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62457c1fb82c1b4399e86b4be2029416a533908dbd30783a4a1ae8291e9671d5. 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/ES71G1944881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b196e912d26acaff89e6e72fffc260edfa928406daf185d7927349ad008141. 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/ES71G1944883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf61bf0bdb577b3ab970a39f83026dd88ceb8c156da9e08d7c95c6a151d7ffcd. 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/ES71G1944884.
Ciertos Espectáculos de Santiago de Chile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b6292c45efa12e86cc499d65a0337c325a06c2ea556e04c40d09fd7d57f1e8. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/ES71G1944886.