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 0x48509ebe3c5ca319c3804a24663e2db1aa18082607b961f74055113e9375b8c5. 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/b7560212-ed2a-4881-909b-b83ba6d70527.json and https://artists.proofprofile.net/proofs/artist/b7560212-ed2a-4881-909b-b83ba6d70527.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 0x9aa3d7063a1dd70d9f7d7935b21d18f7e8570fb614e7a31707dac7e6b71a7697. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:54:51Z), 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/TCABT1404372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e91d97c95d0cbe774687541382eae602e3cf990c2a1345a3dad90555817d17. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCABT1404374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3046bb64ef06cb868081a71503eaa060a2eea91d32faea97b620b691f4127766. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:38:35Z), 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/TCABT1404379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912e9ed1caf7d615e1a2969a62c650fa915b8016c557ecf6fba8636e95f1b7c5. 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/FR26V2061671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f29e533f05e7b22f5f58931f7afeb04f1292b4120b4e89bc7d8947d95d3f75. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FR26V2061677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c9506f2a91a58ff715eccf4059faa3af1e6bd90c6c0482452c2f07e4675d44. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX762021861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca9d898bb56071a9404f10d4070c6bda41afdcd0f9b8938c032a3f56f120473. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FRX762021864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48cae3161fd23e1bfe40a06da2966523b2295358ff592412a7401223512e80d7. 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/FRX762021866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbaa88a12ca92ad78138faf3bb53779e3e1c3f356086023b6f20ee424dc41125. 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/FRX762021870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8d8ebf49c62f8fd718a0f7a584f4c31b9fa9dab41b5a2539a5415a75e7891b. 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/FRX762021871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a27e5f97727c7adccef282cb9d3d6419d81ad836da465885605884277b1ec6. 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/FRS182055324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e04004297b984a5cb9604bdc018295d58b399da463442a9347a9ebdf7efb81d. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:01:17Z), 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/FRS182055325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e087006cdd27a275ecde88889d14f5cf88945862611c90b7303286fa0321c5. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/FRS182055326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49ecd6e4e2243000e07b8f70188a62b248eb3377863b691edd710e32d81a4b0. 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/FRS182055328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62edff7b08c3e730a727105efedc061d2c73de9f9e08cfd9290de1f5d25ac33b. 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/FRS182055329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5491a3f30bbeae3d3098d7796f102d89a5bb6600565f1d74d054fe1d662d79ab. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FRS182055330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03830d224fd572de061b77fa9e0cf85e217e4886d4314a2a1438ffd6c4833212. 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/FRS182055331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e8b1562ab9ff946796aa5e58f0a941a31b4a70eddd6493eed688d687c0da0f. 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/FRS182055332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f224862ba094082ea1ae2e167ff0e02bdc9a782b8a3d4e37c57090db5398c0c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRS182055333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e96a43903091ed73d0bb184e5afb9379eba87211cde383c93039ea6ecea90d. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/DGA072193199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3d5460c73a785e46214c3ea3311d3c3e6b61589a659a555a62995fdeffddc0. 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/DGA062289226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1acfebe2db0e181053064c1855efcd36ef96691e811f13b99da86b489d4f7e2e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DGA062289227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e96a43903091ed73d0bb184e5afb9379eba87211cde383c93039ea6ecea90d. 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/DGA072193199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01454972e4573b3fa94ae17f4688e9e05ba721c28a2b6468e8d7438b5739295b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DGA062289228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9ac2c9577f991280a86dfd6ccc793820d864d1d47051d1ad3a5bb32a4fd1b3. 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/DGA062289229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf214711f61cd816ea2d4a2817b975b3abf64e8e67c4e5271cf3142af48da7d06. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/DGA062289230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9524c000cde395544bd30cc6ef932a246cdac36c2043b8e9946947d0e489c06b. 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/DGA062289231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabdd4eee6abd900f208ca7efc8a2b9fa19dfda4bcd47d40f1870fe0921efa448. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DGA062289232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a5cc791e739d268e3fd5a248550bce4c81e5283c125c935136ffc7cfb9e40b. 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/FRX202127521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa185d7ef2fa331b7728553a93de6b657a7144845bb1da9b787d8a3fc94749f8e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/FRX282546785.