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 0xb980e63ad88bc7fccc33d7f7f3da001c80aa26f9a0ea62c25941b281b3e05479. 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/9698fca7-392f-4fce-b786-c77e4e249adc.json and https://artists.proofprofile.net/proofs/artist/9698fca7-392f-4fce-b786-c77e4e249adc.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 0x7becc46735f5e7eb01621f4f46fb845b3c11b8d53d1014e430dccab683eb7ce0. 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/ZZOPM2106767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e11f5763e8952e7d6d9ba5ff5273d6d0d7cd9420769bca603d79d778873e5f. 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/ZZOPM2105602.
La Reina del Flow 2 (Banda Sonora Oficial de la Serie de Televisión)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e11f5763e8952e7d6d9ba5ff5273d6d0d7cd9420769bca603d79d778873e5f. 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/ZZOPM2105602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe580954c9a312aaa1f3fab22d13e8fe05e418b20aacac728aa86fca7d6adeccb. 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/ZZOPM2106764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a35afd9267bd7e294b3c1b43dd0b8beab8c9bc6ca7453d88a238f62fc4b2206. 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/ZZOPM2106328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0629cd60763c7d4c5c73544ca4fe8156bca6fc0341c08b949a4f2944232168e4. 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/ZZOPM2106329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84e7ad64298bff36df86c5b82a8869b67bc58c6c7ab430b5cbc68cbd7e22bf0. 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/ZZOPM2106763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c78fe6d957de099d627df9b5261e9f03abc23ff7fd5cd3c5234075ac146f74. 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/ZZOPM2106765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7becc46735f5e7eb01621f4f46fb845b3c11b8d53d1014e430dccab683eb7ce0. 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/ZZOPM2106767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb6b51df03b6c76f24484b1fe10339d3607942a897e0f2c5a580e8f4e86008f7. 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/ZZOPM2109229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e62a9c0a755ccf63005b90d97a20e03783cd55f7f2002b47494e1e631bbdd2. 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/ZZOPM2108716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0bc3aec078389a7e7e2a1dfcb7a32f8565e5384e448d2129e2cd872b552b437. 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/ZZOPM2108721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e0b3be37c9b16678c1d791c71e89fcfbd0e50b450dc251c705263c11c4925c. 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/ZZOPM2109231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5069383da12aafcefa3f5d318462f01d8a008e49c631c93e64511fed33ba3e0b. 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/ZZOPM2105640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb351d206a504c82a50a3f66f2c23573f2631da1cbd4a93eff7d10426a2a7fd. 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/ZZOPM2105641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b752a13e1e4e215b744a94533e2cc4db839dce141b96073baa97f8f408fc37. 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/ZZOPM2105642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f3249176515c3f1e38aebda3ebe3cdbcd4650a00bcbd7ec5ae4157bdc22d55. 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/ZZOPM2105643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2937efd8ee32bc1759488ada6a0be61dae40cd2bdbaf50ef2c61e2e0576dd279. 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/ZZOPM2105645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26119c2399800cee6b53298bd873d7669450105f31116be628d37a041d481144. 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/ZZOPM2105649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35b413f8a8ccc390b94b51acf0e6d1e4ccc90ed215e8a3defe47ac7081ae194. 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/ZZOPM2105650.