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 0x6d1666e2b8061aa524e8378bdb56fb0d5b4f0a128bfb21ef53492dcd41c6b00b. 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/7e89cc50-17fa-4251-99ab-ecc5567bb6f3.json and https://artists.proofprofile.net/proofs/artist/7e89cc50-17fa-4251-99ab-ecc5567bb6f3.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 0xe72e439adc616ea245a3d98c15a0dd4ce8beb6c5f4bca76e616ac3dac9525b9d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BRFS70700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9287bd7917c92c33d8e2209a0d87efd82f5c2ea772346068f018998bc4e390. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BRFS70700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a9638e76d860a22f76b46dc8f97059feda1ef9ae434c9086ee1050d5090022c. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/BRFS70700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb47e99bb68bd66d63606292e081b7d73a724658bceec56aee264d333ac18d9. 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/BRFS70700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45f295c178b45a427ddaee8817a7bbcf35f53d055fb29aaae3fd4c5a5e45bfe. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/BRFS70700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1cee612d6bdfdd0f28b10f5be63adaaad6e061a4a6d777410f34c69ec4e742. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/BRFS70800014.
Momento Espírita, Vol.15 (Especial de Natal)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2ccaf84e7993936b96df929ae41c5c50a4e52732e9ab75ae788d9b325cf887. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/BRFS71100031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c9eca0eed4e5188f21ecc2d4e4f81071e668996753efed032f5f0363e39e33. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/BRFS72100099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4e86dd155b393c3f56f39db5f8c8e7c28152fe47215d0a4a095015871c2985. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/BRFS72100156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe918279c432ac129179ee364dee78d6b832971cc605d14e17cd9cc5d0c7d54f1. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/BRFS72100050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54442cf472d0ae8af4f2f4cecd40fc24fbf0affc587d674335413150dd23a640. 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/BRFS72100051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc117a89c8a08c0684456405456c400122878575870d06bbea80a2ad0dea8bede. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/BRFS72100053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4786e427677b3220bf5da2209c6014b73256b457518d4dc244bd471136490f86. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BRFS72100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da232ca088c355c83f4ded06b4b11344518502c093b3b3a41ad10d47ba2fc47. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BRFS72100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992554baec05b7980d0f790a8d28488589d726a10fd4cd5b1f0a676499e9d8c9. Chain 2 (Bitcoin): anchored in block 957665 (2026-07-12T06:13:49Z), 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/BRFS72100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599de3bc3e8db8d5f0f77c7be1b70e6c6caf47f1e917d44b16838cecd57d3f07. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/BRFS72100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40be016eac8c0814d3e0385737dad443033a7c826046fe92765079fda7fb3613. Chain 2 (Bitcoin): anchored in block 957661 (2026-07-12T05:37:10Z), 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/BRFS72100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe336c44da267deb8f05071ba01520747a0bc16cdbbb16acd17d897f17da20c64. Chain 2 (Bitcoin): anchored in block 957661 (2026-07-12T05:37:10Z), 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/BRFS72200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7127c39637f019b47401b28cb14ff9d92069dee8a3614b582c8aef44f0060ac1. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/BRFS72200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ce50057e3681bf61d3401b3fdee4eb12b6dcde7a2986ef5b2ce2e2803c426f. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/BRFS72200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd083f09884e3aadab12f113e711af57b071987600f0573a19bd674291a83cb64. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BRFS72200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5eebf51074251700bce6b585146677c16ccd751868f8f32db9df8d3413846d. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/BRFS72200008.