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 0x96ae5ccfab5037a7aeb6f18adc4a95ffee55f92a8e27b8e391703a07505477a1. 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/a0b9a41a-764a-4744-86a4-6506222e7e20.json and https://artists.proofprofile.net/proofs/artist/a0b9a41a-764a-4744-86a4-6506222e7e20.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 0xf9efc150884c095fe503ecde5568ef626029fd8cf65e3821c2e263435c4f053d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USCGJ1348826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9914cccee9e443881b96c48441593fff1d438cc60206e1fcde3beac1fcfdc018. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:25:45Z), 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/QM4TX1593668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04cb4813d418fab10ad9d5d2a3a725a2cc78dbde02c2c0d5767f1763d54704b8. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QM4TX1593670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9d506eaba35c6203bf6e3fffad573e8646d20e20ad365342b870e5b6a8db5d. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QM4TX1593676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339087a5e8a184206d16944a3c1dc07c6219b0e5e26f7244594549112f81af43. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/QM4TX1593678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb211f91691cf12dd4a627a28e46f915e43013383688f9c0c0a0249129dc67d94. 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/QM4TX1593679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c221458f54de5a63965a4dc32d6b1d92c1de81ca8b32f17639f391a477c854. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:02:22Z), 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/QM4TW1626110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c986b7ff76788158073220ca892e55a659621d3d8d4cee0f990be94841dfe5. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:10:12Z), 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/QM4TW1626111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d593a42a7488ae3e66e551c9f04ac5762ee181dca8cbb7445cf20b5211963e5. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/QM4TW1626117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b7fddcf32de048225d7d9db6aec1e75d18c0f2fe2f9a43ab03dcabe7e86fee. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/QZDMQ1917501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7c740e953fe56af028d8392c914367f62c88e8ac8056eed4a702cafb49eb4f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QMB621815702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71a3222b50b3ed13251a3ea5ca20c7bd99dc407bd1d382ad01b91312e817dde. 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/QZDMQ1902403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6906d4bce4cf4cd899438015e72beddd3732f4a892b01efd744fb3161075339e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZDMQ1902404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74955a78156d6b8ee5f398266d8656edbb14b79b9b3ea52f939862720016a177. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:07:33Z), 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/QZDMQ1902406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3344c572136b08ddda84a557c714872a68352c3e7f1f5261a3776a77814453ca. 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/QZDMQ2150011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3344c572136b08ddda84a557c714872a68352c3e7f1f5261a3776a77814453ca. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZDMQ2150011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427ce0c2bd60d78ff9e8bdc1dc45eac6a40f4b9296f0859d5a4b9bf10bf5f43a. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZDMQ2050102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1696a896281a3d580226a0cc2cce961e5f4b9192fd1561480f8f15cacedf28b0. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:00:53Z), 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/QZDMQ2050103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11caad8beeb5d9b583c0daeeb1a7233888776bf8c47f98e1ddd567f8b1dde6cc. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZDMQ2050107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70ff65f3ca20aac3f244b673a2cac95479736ba1bd7dee767c8456f9c0741f0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZDMQ2050108.