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 0x1defd4df716dd2c00ef2c5c0de19ae9df3ad842c2a088f85962eda5b2c5d24ed. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6120132e-992b-4fef-8dd4-a358c2f47ae9.json and https://artists.proofprofile.net/proofs/artist/6120132e-992b-4fef-8dd4-a358c2f47ae9.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 0x5ce68a994a0fdcf8e6172ee5f7936df461722e8ce82be8b7374a552e6d013b29. 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/CAPVJ2200210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ea77c84b8988a4ac6b8f0b0a6795c9de24b8ebd4780cbccfedbf9ce7ad4046. 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/CAPVJ2200211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbecb91c736daf45102d2620b62e29bfd6c1feac46738f49e37aef397c43a534e. 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/CAPVJ2200212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470d074ad09ccb38d375c1e34d30145dd52ab88adcc69c8b7e47606be2876e97. 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/CAPVJ2200213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0506fda5436a9c09632ecdd4ede78b140a6528290e4d617994f08a90311beb. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CAPVJ2200214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8be692fbcfff66fa88e822b276e22fc140e3f1f6db3bd929ab50e3d4cb99287. 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/CAPVJ2200215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e9683a39d0766226396656b3d1b16b2cd370053b02943bf56528ea3ba9aac3. 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/CAPVJ2200216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24238e046340734dd2ca8423f012e9602c1cb9ffa10998015756cbc3b05727f7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CAPVJ2200217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9783683f68a3d151c91e4cae3b4de125d2b80cdfe37d8a939baabc22f5967da. 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/CAPVJ2200218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998165e3cbdbd34be22a58a1a1b9863c0504f1df8959b4d3d95500ad54782d36. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CAPVJ2200222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c937dbf624affcc194d0ebc6c953a419e492a37751a0ef4aa6ea75df8d294cb. 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/CAPVJ2200223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863289c95474e217962ee20d74106d89b9b8eb76e9ab18255ffd043930910790. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CAPVJ2200224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d42b184a3501525f9c7868208797e1785c9f84ece726cca5d74e8bb813f49a. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T18:07:29Z), 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/CAPVJ2200220.
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 0x6951672e51d60a2aa940ee2f23e5663884280f75b1e272d818b46259042f590c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CAPVJ2200247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee78689bf0577850d86355eb2e260ce5a0764337bc4e8e9b735c7ba16908e21. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/CAPVJ2200256.
pocket operations II: forty seconds only
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30f01d545c500282bac82d7e3ede2f838c2e064e113aa6adcc7152681a31328. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZTRX2313226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7594da9df6aa456786719643cbaa61c4c9da8aadd1ee996883d8c61d0ae83a0f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTRX2313233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1496cadb10b91fbd4f924c0dfc2ff6bc036cc18a7f15d7535b702e7a3c4bc4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTRX2313259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de3a61cd1baab7b3de014d72346e987c8ea21756e9a011cbe0b5ad531f62b25. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZTRX2313273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6711a65cb8236efb03cd0c2a6b8aa4f62d3df2bcd30fa705bafdc53ca16223a2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CADEW1900100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d87435701b8949e44d02562d996aa5734fc7079a69d62f360b933d896284be5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CADEW1900102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d77ad05ad69921f12fff5eef6a3a25367f4bf90c1437ae63334ce5df3e84cb. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/CADEW1900103.