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 0xcee7243c86af6eba85ae237c542a4c93cb5658a2898ee6eff0ea3fea0c93e2a9. 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/5070adda-e7f2-4645-96f9-a84442814e3e.json and https://artists.proofprofile.net/proofs/artist/5070adda-e7f2-4645-96f9-a84442814e3e.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 0x57c733906f78ad6970839ecc47316fcdcba628638104038805972843725f95ec. 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/QZDA52067417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134d2b3750d0a7c8c9074337cce5a92f1d181b2d440b268963cd16ebbd0ec751. 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/QZGWX2146631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a85db2f0ef79a349036b4c1d30478b3463d1084f8caa5959e7c4f212376484. 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/QZGWX2146632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c6cf2f596d76b97a6c6a4c2332fe13f2f8208bb1e91bdfbc85f245a8e424fe. 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/QZGWX2146634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22fb8fbb971dc13b714d6f55c926c1b2bef94b002d2da61e28e60a66add6c3e4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZGWX2146636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8a67321ad04c58c5adb4aefe55d988016d48759525ee7af89bf110628cc941. 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/DEXC82000065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162bed464d800f40ac9fec5983d98a7f67f5519e0da5b494701b21bb1a6a36f6. 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/FRX872003206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c815e54661382f6d6370890cdd8f31361dc275dfa7a47afdf237a848ca6616. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRS182041210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb657e9e70616e440f6f58c0f50aa63957609f31f45839ae8a20028fdd9ee4f15. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRS182041211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c7c818575d9c7c35c018fe43a2e63b52d5bbf48d88faa4da9809a0be1262d6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRS182041213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81ece646777abcf7ae0349bb1353fbace100b2e4ada1e249bee9dc458c08b51. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHNB2396904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89fdce8fc0b5642952d9939978a485c43a5b955a4b6dcd32ab76e2f9b7d85299. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHN52308605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97baf3b3fcf533c37aa1d58a84bc62fb4ba341aa741849d1d20fdc9c9c6a951c. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:47:58Z), 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/US2J72404701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2e836c075c0cd7edeb7cd08636f0e83e64de5a6d0f7d9480285a25fb5c7346. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US2J72503911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11afd328f45981d855826bc1b203b98861214be9ae7991f8991d33b02019fa89. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US2J72503906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2e836c075c0cd7edeb7cd08636f0e83e64de5a6d0f7d9480285a25fb5c7346. 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/US2J72503911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025b5606ebcaa4f11b6b15ede57f92be5804696f8806ff0ca742052106389042. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US2J72503909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11afd328f45981d855826bc1b203b98861214be9ae7991f8991d33b02019fa89. 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/US2J72503906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2e836c075c0cd7edeb7cd08636f0e83e64de5a6d0f7d9480285a25fb5c7346. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/US2J72503911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4188bd380f4b1a5711b3d76621435128edbb9d4fe047d29ef03a5df53a4c39. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US2J72503901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1e76753a23c7a75f99a55379a1c24524e1bd95b2f42adcdf16c6678f13d08d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US2J72503902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d3e54b48357392469dbe69cc6a871b6923dbd11a239427f5b60314ecc3ec5b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US2J72503903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe360c27b9a175e3f953be986aa32c7ded2a875ea18bae839575c045b0db61193. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US2J72503904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed23e5a68cfa2badec5f6cc3b52bb2f3f2a1a5673e6f1ec94de18c6b31465c3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US2J72503905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11afd328f45981d855826bc1b203b98861214be9ae7991f8991d33b02019fa89. 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/US2J72503906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d50f372e111e957d93b501aadd0a7537ca1c03784b0364d6723813c6be0809. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US2J72503907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9475c50605a0fc48d1b6593ff76f0e7fe84515878ccf32680787528dc211fb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US2J72503908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025b5606ebcaa4f11b6b15ede57f92be5804696f8806ff0ca742052106389042. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US2J72503909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40db841a40cbc9d9cddf33a9b9b334e2b5526fc4a3a5f74734ad47c322e7142. 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/US2J72503910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2e836c075c0cd7edeb7cd08636f0e83e64de5a6d0f7d9480285a25fb5c7346. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US2J72503911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4d060153f5e4559fb69a0680ce8c7884e172e59899dcf08db19ff7abb307dd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US2J72503912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc2df073541989870f070d38aad19e9509838cfbcaaf2bccd9d720b0bbecb1a. 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/US2J72503913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c41e9d655d76f03ddd1b843fc9c8920fe5aa7657e642abb8002d64912934a0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US2J72503914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1abe87b46b9c879efb172f288dfa70b01a94a9a420b00bc37d5ae32e6d7c3d22. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US2J72503915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0203aba5bd9bf4f93f4d86879ee6980117dcebc6f70f98e15223aa7a16c443cc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US2J72503916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6214eb93f39a4b461c3fe75d7533985a7014b90103e6f9bed277f2e0b99088ad. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBBKS2100098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4fbd20278d7b00500d4c84ded231e11de4616fe5c2f3e77d4ae926827ec57d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMDA62307594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a1ef7ebc8a7b0fe9e07ee2afde700162213074d56a6df41209dc91c8590c92. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHNC1989923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cbc18f306e6d5057fbf062f5a23e937aa24124ac92d7939f403c93438083a35. 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/GB5P52100227.