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 0xb47c372501a77c2405ba827684e42581827b1a4793cb67a793b5db407e3ceb6b. 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/930402d6-3a58-4868-a78c-e7ecb1014e5c.json and https://artists.proofprofile.net/proofs/artist/930402d6-3a58-4868-a78c-e7ecb1014e5c.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 0x414101513f42c2cce3b00bdfa3d60a9671cb315026c714ef5a1e9c299afef152. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM24S2306379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb754b0c9eab9c235223e9e7e907913126225f89135a02799cd9de094ff8946. 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/QM24S2401202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975008372b1ac60d62eae4f4474627b55f600e758f1257db394cbc3f61830b0b. 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/QM24S2305550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414101513f42c2cce3b00bdfa3d60a9671cb315026c714ef5a1e9c299afef152. 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/QM24S2306379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1949d94c2cef118cb48bb7a7757ff1904615b272ad1f787de174670d57252f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM24S2401201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccfac9853096b96d274ad016bf5b045701eff8167d4d56d90177665ab30a88be. 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/QM24S2401200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d388711400adf3064aa2a51ae64a12f0bc13517738d3ffeba7968c4c770b868. 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/QM24S2401199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b7923b2eeca79ae3b1e720cb0572e6713381f9eda8d71b103e047b1335e459. 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/QM24S2401198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215ac96ec171901358eed7afe7109b593bf8e451ab556f9fbbc5203a5658a57d. 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/QM24S2401197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb75ecc883b2acf1bcb9416eb7e967693c359f24e25dd38d5c75f3ab6517808. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM24S2103418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc3509f1c204ca4a6950eef4034e0dfe615a36f01f227b191c8bd543f66ad5da. 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/QM24S2103419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50846128c0a3ceebebcba17e2114680320962529b73bfa1a39019ba99f850b05. 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/QM24S2103058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23146fdb08b6a8d1979aeb13848b10b4d225d4295df5f140341035a017b39662. 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/QM24S2103420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe369dab3cfe6868ec42c7c0f18f7967ba5ec874cbfd9882752464d3330d4e183. 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/QM24S2103421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e7049c5b732e5db746f5633fb2e6e9f847e092b8ea71955c53a3370f6f0d7a. 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/QM24S2103422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54e5e996be14109485edf5aa4b2169688a53950bb0dc879d80b04530a0c1b26. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM24S2103423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510eb426fa52b891b072885f75cbf14184a836a4e6bf5fe4de458fc03db5fbbb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM24S2103424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975008372b1ac60d62eae4f4474627b55f600e758f1257db394cbc3f61830b0b. 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/QM24S2305550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50846128c0a3ceebebcba17e2114680320962529b73bfa1a39019ba99f850b05. 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/QM24S2103058.