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 0x4afd44cd503dcd990db384fb1204f911fdca95508259dff0bf68820dd78d6a37. 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/e5094439-801e-45d1-b5d1-4a3ff596240f.json and https://artists.proofprofile.net/proofs/artist/e5094439-801e-45d1-b5d1-4a3ff596240f.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 0x186f24eee34c24946418d553ebebf883b6647c8c1d32f384050d95115fe42316. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/SGW502446958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49a88dff8bed54811341644efcc9865a9d093aef185bb054e138e3246d5e599. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/AEA3A2329214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef8dbe3a84bfcc211bd2b75f188ebc638484f90f6233f09754bea24f07190bd. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GXD7G2293934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a9449223f5dad68af1717668e193317071d94be22a9728e70e481048973f58. 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/GXBAV2552332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28343c4314461aa2ef794d3344d288cd5fa168cf36f81ee907bcbcb560e42783. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GXBAV2579099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957d0dbf585a58e4b555e19c6cb646cd65b1503a6b315817074509cc9e66a25b. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T16:00:21Z), 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/GXBAV2548119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093a2f1dc461ac893e48fdf7a12850f4571e726d801d175201346266dc09a5e2. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GXBAV2520268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9e44568bfbe7bc90323916d07d9d680c319af3a62b1be3bc2bd91d02642678. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GXBAV2572947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643832dae5daedd0d8a714f6226f65277e1a07718a373207614f64874a7027c4. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GXBAV2557032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f5ec2e3fdd27145b7f235143fafccdd5fbfe90d7c45ca1bd07067bf851e057. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/GXBAV2581525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e44f60726400ab34f5cbc75cc79f1b3a45e6d1cab5ce49ff0655922f16dbd06. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-19T23:55:12Z), 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/GXBAV2511392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e74819df2a2dfa76668c2987826d2e818d4e1b1e81a73532fc3fc89d20a989. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/GXBAV2557770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c135bd4fdf3a8be6b4517280899ed1cd65bafcac2b47460a0c7f5a3e30cb896. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/GXBAV2525309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb637d4bfe440138415e77d77fbb373393fe0315ab6e6bd8820019b447c3343. 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/GXBAV2549805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805ab1a28301d6c43990ecbf0ffa95e7921e469223cd5414e2e7a6098038eec3. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/GXBAV2560630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1ba5e3f3e48e1c7e85a001a32b438ba66e524e4a383b39ca5cce8d0525cd65. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GXBAV2555587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4add65bc18666b2cdfeccbd48b9ee7ada7e9dda70e355ea30bfcbd4a6be01118. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:21:41Z), 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/GXBAV2559961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f41df6100bf78aece67a6346844b289f3d32e272e9171b01048fee39782875. Chain 2 (Bitcoin): anchored in block 958660 (2026-07-19T04:21:53Z), 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/GXBAV2590643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5111de52ad9e137c389b37c5231c756869a71971bc7e4e3568d6743791c92a15. 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/GXBAV2531213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc5b57993e34ef2f9a8fc4a98b1d5c457e777d0142304c7721f4cff751cd25a. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/GXBAV2531470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24dbb02c35151a51d7a36405de43991428df32792ceda471f03290a2a43a5269. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T18:01:37Z), 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/GXBAV2527514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398105866e824af27dd5fd1310a65eddb7b7d283fccd6664b08083759b8f04c6. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:26:07Z), 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/GXBAV2553736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015d214c7afa497d2f7cd7fedeb0ec00ac32cc612444c50b5fcf4acfc9a3aeeb. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/GXBAV2574965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10342ea385b4a52d0d44d3fcb023f464f8efe142276d11fd3f69b4ee757b2756. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:05:02Z), 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/GXBAV2592244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503a1b9f1de4a5b4d92cc325ff507e7be1efb66cfd2ae810e226e50f2667c4b6. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/GXBAV2510148.