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 0xd27329623848fa638c0a1a41c7743277c26856739b41bae7723aff43fded8531. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0acd476d-2cc9-48b8-bd0f-9fed49badcec.json and https://artists.proofprofile.net/proofs/artist/0acd476d-2cc9-48b8-bd0f-9fed49badcec.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 0xa715f1b0e17cb4b6132f68d72853dd714ab767b06ad881a4ce022f8d8b8741e6. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZMER2314407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7c16e511c607643e37443b900a2b1464ca64c60026be5f881f23e663bc33fa. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GBLV62317603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1674ef77747137690b99a114b903a63d66e78367f6e4f65352bf1c935d9e54f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:15:53Z), 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/GBKQU2407649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a83a351a02bf9897848c3a931b4662b486ed3c9de14d32514ac523068ff2e46. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QZMEN2455564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd2bfe2decf5f5ec4813e2a533edec71735175bc0ea153317dfefd5c3000ee1. 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/GBKQU2455110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184d0adf1c61ea814b6707f6b431734e00f7fe1442f782704372304ab2cb50b9. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/CH6542466760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38aba52ef39f921ac1ef712b03ae2c6a176cfa4dd45bb1849f3f20d5497ec96f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZH5E2475904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230b356c7a55dbf4b82f432b0dd9220a8d9334560ab467b4e73ac81495c0f89c. 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/QT3EY2437259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408b5b5a954ca670df05b5a78c623ac694de0f86820da984a31a53b139436c38. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GB8KE2503331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67009f9a6de2adcab11ccd42712036efef6073025ebd4608aa814ca55c8fbf4. 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/QM42K2537256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a92ddf5793d7bc776c6b2b8b4cf6d34dee68cdc91cac4809724ce38a66d0541. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZMHL2579285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e01c1c3d353f782516aa8cfbc26a71ec3a52811feed778409d10ec6994c1dd1. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZS662589120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61dff9aa39f45d5446a84d9238ff844d37af4a24d15a48d8115ead3e4138e93. 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/DGA072406890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe589cd6d3ed780b1e7ba062f2348413122eb301219ae33a6cc743b627f7648ee. 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/GBKQU2407650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd2bfe2decf5f5ec4813e2a533edec71735175bc0ea153317dfefd5c3000ee1. 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/GBKQU2455110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ce0c3036aa9f62f4d28aebb870b2c0447dad8947eea59aa9a8fb2734b2ef05. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/DGA082368594.