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 0xa8fdceb9d2fafc3913495d6234185516a093e2dbbf82b3cb6e0a49d5506d1548. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3f247513-32e9-4693-b11b-82d8f62ec2c2.json and https://artists.proofprofile.net/proofs/artist/3f247513-32e9-4693-b11b-82d8f62ec2c2.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 0xab290b5db1eaadca96a506b562b852858dba351383b459d3223cef1e4d2205e4. 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/USHM22080485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb685e7b8357ed3d41ac6f3dd73205fbfc578e63d46c8e77a578260a5b189112f. 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/RUA1D2297205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43aacbdfc1a342b8f5078b002bb44e7fa4e74cc72ffb93f1f49c21923ba41403. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/USHM82154897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f001084f8ed517439cb14c702009abaa009a7d99d090765074f4fc0baa8123. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:27:36Z), 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/RUA1D2242237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd56e49b98830469571e8347e0256a94fa9aabcb1666db657552c56c572b1ae. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/RUA1D2297961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6d52424c4eaede8e81a85256ba44319292afd91ab6678c5738376ac6d6456b. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:31:50Z), 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/RUA1D2297964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5bcc8edb78d3890167c5137e39da01c84416e79c7dd1f3bcb06014ca33cc7eb. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/RUA1D2297967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71cbc20afa29abb5e67aa7f7fc1e645250a895329f64e82c105308e2967ec46. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/RUA1D2297971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45fd46d9087a6d5e3b6d94d20f313f0f37a0a0daf949665688be8e651b4ba8b2. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/RUA1D2297973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede6190cf05479a8f0e5a3d00db762eb50eca29edafd9bc601bca9adf1854c6c. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/RUA1D2308696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c7faf9c05a15225a2211520bca3bcc3931588d38d7d019c0128173c6369a52. 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/RUA1D2316483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4089b6f52ef136192b12d13e97121019323cbdeff60c726d848b1762e545be48. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/RUA1D2316485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958816720fd45b54a5f8b67e9c3c12685523cf1fa7d98e10e05dcee8380ede95. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/RUA1D2316488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b33199b3b4de34aefa0f164897f7822d208160028b3ad815dffc64ccd7001c0. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/RUAGT2340028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdebf3553b4a2513f9b22b165d60b0f5e9cec02e3ad625675fd51ccd1b875b908. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/RUA1D2458701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501b795e4df0a44ddc32b9090c7a419e93ba16c8b54de4f76ab075f29bc399aa. 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/RUA1D2466653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937446e9503d3d6b8d7c3a3f418c1685fb6624cc2031aff7f91493f94aa58769. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/RUA1D2487499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7209f7a3b4033d5891753561d97056accb1b605864de774e4b2ac91ae99db79e. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/RUAGT2425558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02a42e3dde0543fee3b6d962a4ffde738be85cfa6d33a183263c8b37ce81fa0. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T03:02:19Z), 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/RUAGT2466132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc036e560c3858fbb7b63650e8b9ba2272e68d3ace5aa3ea89c10790d53a88ed. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/RUAH62406696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27522a115d3c02b74a1818c62395f06f069e255b248e5d1158674a388a789e12. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:20:51Z), 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/RUA6Y2508977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606dc2b615d49265f9087c486284fbf7dcff448de680d782a587c1f12a434a9a. 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/RUA6Y2529865.