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 0xa26bbb5bc2af344e9d18e19c3b3a8134ed2752fcfc4a37b3045877134a188c01. 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/d0192193-6afe-4cce-b8a3-9fc89f087467.json and https://artists.proofprofile.net/proofs/artist/d0192193-6afe-4cce-b8a3-9fc89f087467.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 0x3b899f18b7ae97d20ce5eb9f6686ec80c8bd37115457001fc7ec0f2354c32c5f. 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/FR0U91601551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4e8bc0272ed587544fda9fdc6c1af3c2d51b15a06df345d983328985820c56. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR0U91601552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0a358ea7dbde947f16e956fb2811d0bde35fe0d44f0848527090af9a320ab0. 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/FR0U91601554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd104d4d3f10dac65086c2626ea5e890e5dc148bf1ee1c34025ea679481458c45. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/FR0U91601556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f99094c062e70fcc83da43e007e13f11230ceb1cd9ce39ef6babc85d5aa24d. 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/FR0U91601563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d7666d0744f3d580ee34ab75460a482802d74241c97746fbd65230f75627c0. 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/FR0U91701363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95d8bddf2e94d0f575f8d421a85646f513c904c960b4abecd8ce61de9e9e6cb. 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/FR0U91701365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66c5c2090143ccaf740439fbc1f18ac46eabf30b297833aad11b112965a8b1e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FR0U91701367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6dc63530709c3edd42bffe2f40b452948e0e722837518d538b414e9b95117d. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/FR0U91701368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce714df6b3c7a26551a1b1e6bff22330d22f7eef32971f9f999c34aec5587372. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/FR0U91701369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d75353c451aee10838d2972e48c7a943663e0c00478e2de399c941b70eb46c. 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/FRX281704530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912ec26348c0a9b3dc7e92a838afea302d24811795e292f5cd449464991855ca. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/FRD4M1900040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c10cb7352671f748dbe2deb8370ebaf6763e5bea2142059797dbcddc4903f5. 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/FRD4M1900060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf4282b1a05f73d47d898e544e1edfeb697aa1d8ba3d0ccd56fdb34be937acc. 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/FRD4M1900090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912ec26348c0a9b3dc7e92a838afea302d24811795e292f5cd449464991855ca. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:27:14Z), 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/FRD4M1900040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51217ea40dc32b994f6f41b56950903c08d2fe77ac5715577cb2b8ad0a22ddc4. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FR9W11818803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff67318baa0f20fbd1b20e6c282784f7578040c3abdfca44eee876e2b677737f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:00:54Z), 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/FRD4M1900050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe0aedf0583c24bd5580cefaa71810e62387c7839c0734d39d0ba92db2278b5. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/FRPZ92518120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7474841b2789de9ee4222352fa20b14d0353d55f73c54945df3165130afd0062. 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/FR9W12409403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7474841b2789de9ee4222352fa20b14d0353d55f73c54945df3165130afd0062. 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/FR9W12409403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19dca33e8d7307627bb09e209b37ad179865e603d67045f0954d22519e946fa. 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/FXR142200210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4666ff927a6845ce2ad83f37da2ff73f9f841b0e6cead0bed473872b5e03f3d. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/QZHN42499019.