thumb|A game of bagatelle in progress. Bagatelle (from the Château de Bagatelle) is a billiards-derived indoor table game, the object of which is to get a number of balls (set at nine in the 19th cent
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 0x29d4bf4ac96b4db6ba8300340bb364441cf1229c9d0d676fa88ebccce306662e. 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/0e985e87-2387-4ac5-8372-615da2485621.json and https://artists.proofprofile.net/proofs/artist/0e985e87-2387-4ac5-8372-615da2485621.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 0x4a3eec12cb83ca9e7e3ffb5c7c19f0f69abf5df8ff61692816593c6bfa516c52. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/IEAAA0300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6330d654b89239998ac61fe75def4db42ca180161a8fbe643186c15bb977d4. 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/IEAAA0300066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d18471da6b413e9cac161de20eac3495883bc3883206ea8c2b390e1c845449. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:02:16Z), 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/IEAAA0300078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbefc754f5aa514404d8f7bb4f634ec6e298db64a7fae1ef70039ee18053bdea. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/IEAAA0300069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7959f1afdc4cd66fa4f2a3816815194264c65553c028393db75a035d91dcd4b1. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/IEAAA0300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84828b84af83fcce94605cd896587521ad6807209b8cdaec909866011045714. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/IEAAA0300083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8aa68f6980774ebd4a72ba0099ca8f9fe50d2cb7e5960124774f2fe2f1b53b. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/IEAAA0300072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c1a4324ded8134ba51ad1a2d430731d24bad266b58ecb524e143bc9084d3b1. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:08:48Z), 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/IEAAA0300061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dca2f1b9e3a53bd35b35d50e6ac57ea3d83fc78396193a233bc48e6b982fc99. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/IEAAA0300062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2f413b3e8eceb0511b999cb0d30fc703d031aaa6a7f95196b4c36853e7b0b9. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/IEAAA0300064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd851031204a36afa107ca3131f48fefd96a7040fea155b6a9762f766d23f198d. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/GBKYA0705575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ad8e38cd6a81be0183cb28f908fca25e772dd539f6a15fafcbd50ea1cce2c3. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/GBKYA0705578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb349c038d71c86bfab2a297d71bad3f6bc9557da099b7a99577894e360a1453. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/GBKYA0705579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4131189ebd38dd29b1f68d4d0b7881014370e5c92336e732993ef3301bd83f5d. 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/GBKYA0705580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa797dc16598882e06938bfe04b152e5892592491267c56c540086e442877be81. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:35:33Z), 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/GBKYA0803310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d458eadb3edd1995cb7f1ed22e994719487b2755b8b74ff684baf6ac67378d4. Chain 2 (Bitcoin): anchored in block 957640 (2026-07-12T02:27:45Z), 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/IEAAO1000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c29770f036909603ea00d9003d387fbda534b1e6ab72e8ec8ba3a7735dd7964. 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/IEAAO1000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6dab1c80ef4dbe807defae9d74361ff8cf7208da3bcfeaa387d927d32faaea7. 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/IEAAO1000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4c8b40c25375f47c770c1c9af673b2c67c296879885a69739e779cb678beee. 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/IEAAO1400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50f105118c67c59a044bd3d210cbde4e7e9cbe0b680736d1a870ccf1f962deb. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:59:50Z), 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/IEAAO1400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b622bb2acd974519b4542e816ed78c8010814d0fbd2b4c09282900368ff98b. 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/IEAAO1400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26db97400fcc064d0e16616eab9794602a5b583dd94e38f39a6c560d4b5718ea. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/IEAAO1400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e5218b8f1d2949c0c61461487b8660ff14278989f7a1602bfbf61d80185ea5. 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/IEAAO1400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185ca8f0501cace3ea4a2b4e4730f943cbcce73a193553e27d881c0792c5ef40. 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/IEAAO1400026.