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 0x3c29de44d0a89c9227fa4cdc480aa5e398e0a304c9723f0061c9560de4c24485. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c4aeacfd-0c8e-45f7-9618-60063e064d51.json and https://artists.proofprofile.net/proofs/artist/c4aeacfd-0c8e-45f7-9618-60063e064d51.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 0x924b83eed63a7f2c7a42158d4badabcdd7bad116d2b1a7e681e85420c9870ccf. 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/QZFYZ2164761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71693d1592b5e52d2376c3c25a93774e2ab082199a2fdaf6b4d3090418f7004. 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/QZZ662421855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3b51be6431aee0c54280a750d432373feb645452e8bf0abb2dde525f849fe4. 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/QZZ662320139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d5e864b37cb5cb634a9fbe15bdeeac4adfcac9fc1d2144cea5b7b2c0861a2c. 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/QZYFZ2334008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6293bef39507b888dc90c0239ef90e70a455a23cc41f7e527c91e561be25555c. 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/QZHN42372041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440fe04801df770946a72dcbefa97403d32a1a4f5878d103c4ddfe9e8c7f6220. 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/QZES52322797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02329b38b730a3d94ef7cf60e87260ca228c541330a791bdabaf404a716750a0. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZDA72339602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29d5c49b9d2be5943f1d98a7c8a68fd6067db1a35b4e394ed8ca5933510bd57. 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/SKA012300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73bbdc3545a56691a825dc45218e2de7f95d4d884df215b5e8ba2088f8bd2f32. 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/SKA012300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0759b5f9ad7ba73fbce4ea6b2474fa04a09e0fae9bc12b9a529db0c007a8bc07. 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/SKA012300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495161f2f6f5432c4e83dc568b85224188466bf9461073495b3ade13822f0d43. 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/SKA012300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca7d93b5bd0ba9e2f532e9ce3d3ce38ae6f217eb7588a66335ebc112e582431. 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/SKA012300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db8b1bdb63d8bb13eec4a843172271ac235a69a3cb5ff04fd606c56bf5497ce. 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/SKA012300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35633f4127ab3422260549467d4151bdf9431b4b54963b412a14f857c514b48f. 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/SKA012300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13851355ba162a75890777041fc593ae3f7a39acecb8e8a36b476d4edbf7f6bb. 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/SKA012300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7574d66e4c4514d14e2d34a3530a13ef488882db68b1053af5755343545ed4d. 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/SKA012300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7affc41214f9b2452ba8585292a1929090cf30b5b0a8097e52868c736a6e8ef5. 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/SKA012300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e2bcb57087ebd2dd63b78d682a0cada7428c53badbec84599ab64dd3faf8cb. 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/SKA012300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6cad20fb051258e3de564cdf182fef9f4bbf11f75f929da3648f4de85ce7173. 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/SKA012300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be520644433a451d9ed67d411c22961a820c4c811a4d689c0ae14f0263322c1. 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/SKA012300045.