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 0xd3609cc2d09f49089be5a44a491e9d63d3c9f034f71bceb0bfbd89579f055a36. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/792dcd62-d1ba-4ac2-b118-ceba9a4870cc.json and https://artists.proofprofile.net/proofs/artist/792dcd62-d1ba-4ac2-b118-ceba9a4870cc.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 0x888076532e76b658228915d3a75ffaec13b36e7cba8d1cfe8b74e28bf714e3d1. 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/GBWUL2311460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c3e6a8ef5c08b28d119e71f554168fed4c377da3c30f75ee65f3524ebfcb02. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:41:35Z), 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/GBKQU2353218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4bc9297ec983bd1ebd727c425215a43f3cb48b9e9d64a8a5a06297c6651445c. 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/GBLV62214173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ef68aca9d3ba63b156aaf227160137dc9f8536f35d7b05134326f4f3e1b659. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:59:14Z), 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/GBKQU2333870.
Fallen To Pieces - Invaders Of Nine Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eba845be3638acaf623243e8278f734bf5d34f38deee04339b1241ec7072581. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:08:32Z), 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/GBKQU2362903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df20a91581be07693f5f1b32e6dec21693192f4fb4b01c8df35e1054bfeb5be. 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/QZMHL2557803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848d39d5e7ea1c6891dcfe57d2fe81be4cdaf110e61cca5e4f527b22be0a5a26. 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/GX8LD2530527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f765fb40dafa4934721c2abe7a4ec9a389688e5185af2dafb4a05a1c0a53b77. 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/GX89G2570197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173dcee04b111e0d2c7b871bb5ed85d059c312fc61adf17ef1dce0330328ea1c. 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/GBKQU2502928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565a8def4abe606244fd09ea5ba4bcac29904791f44277db89e7eb2c3ad4772c. 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/QT3AJ2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3575a93582ae0989b15c84639ece598af39deb6b2f6603f3688e5b43013688e4. 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/UKZGC2411307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f114e205eda82d640a9f2c44fcff3f3891ccb5666517cccc0878c1735300db8. 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/QZS652481373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2d19317064f7410264800e907a1eb61b884b3ae87a22ee79318a62893ba71a. 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/QZKDK2130380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9bd8983bae3ce735761b7f9812b1f67f5add36e374db1467e1be9c297dd20e1. 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/QM42K2551397.