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 0xcf894c015cbcac7951ae6470e43c68a09caa709155c8e6c63d571b4eba3f6030. Chain 2 (Bitcoin): anchored in block 953620 (2026-06-14T09:36:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1ebd09c9-48a6-43d2-91db-4744764d7204.json and https://artists.proofprofile.net/proofs/artist/1ebd09c9-48a6-43d2-91db-4744764d7204.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 0x3914e292b2adc4aed56e5e453f9af9532306a3d0c3a4d6eeabde60ceec707293. 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/DEFS41601609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426aa9c625d5b2afc788d1eede3f80c0bee26ef88e1101c673a523a98d2db096. 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/DEFS41601610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60beb47edd5fd482abce5caa711f5766cdc920dd1b6737e8605b3de06060de8c. 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/DEFS41601611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560481b64788d32ea93e2b70e52e162302d59b7c849508264ca02d41d73b5f07. 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/DEFS41601612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4a909a14b8fec8a891fbcbcbd584479e27bd531e8366cb2db6cfc528fc935e. 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/DEFS41601613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7b56b86e91bae38558d52dcc54996b58cd2d30999cac883d59ce092beffa6f. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DEFS41601614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe573b5d3a0dffa4797c4ec879ab7fee1b3f7ca5b5790bfd5e7f2e684c28ac572. 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/DEZ651372357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c16966e6f01ba5280038a4a1a47fa6b5d95d918697adef2ebc20d95fd31869. 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/DEZ651372358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0ccb32a046835126be690c619b435c3878e649f92253c28bb7630b9f770115. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEZ651372359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8effc16b70619519392b9cfc899bb4d2ba4da5f86ceef30693482205d7db6c6. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/DEZ651372361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd8f4c668009a933bd3c7e5db20f60c4bf1207341e6b6d1ea476a89f4f18644. 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/DEZ651372362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5db82ddc0fe342e40aa606bc2761df917a5597bc0a4a81485855902d1493c8. 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/DEZ651372364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2c41c020272ab8c3a106a74cefbf480b4b612fa272c4f01c1a0ad8b86ab082. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/DEZ651372365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27525b39b53f1afc9da95d2f73cd2d1a84526d741abc7cbc2dff3f47c3ad8336. 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/DEZ651372366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff98242c0f06274836e0f066daf4a2991758f9016446dd7170925661b86e563. 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/DEZ651372367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184219f338b1d19f10201e999b7cdaddf7eed99e971b995e636047bd433e2e4f. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/DEZ651372360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec43af50f0181cf410f8dc8ab98d8354f74a308fc467e0a790da6b7d59ef7a4. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/DEZ651372363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92d54412a9a0e3a8584de88a1b3a43bd52229069bb0cb7cf695982c5e778def. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/DEZ651372368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613aad8e741279eeaffc188c0eb66af1a722e921404432a12ee125958b451122. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/DEZ651372369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78af9804afc5d4119a7f20dfeeda7d924e4ca59609d5c3cbf370827a9be407ca. 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/DEZ651335418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205f1a70dfe11d0a356b91abbfc5e5629bf41c4ba91e40355addaeaff774a1a1. 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/DEZ651335424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3db706c890dcb5f2091c9b57a852c6c791967bb1213482167eee487545f8215. 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/DEZ651335426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde35f42a873372b0a9471f35b7f424910b018ea5fdfed9840ca66b341ecf314. 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/DEZ651335427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31032995f30416c3e2a3d2fc6e3c51424ff2226e5fdbdc3a2c22596ee576b3c0. 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/DEZ651335428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3286ebe3f4321319452005e01ddd3d2521bc998908d1898b4fcf91d0d9b084d0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEZ651335429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273e0b106507863cfeda02b120469cb5e8c0dc9f75b8b6ad29f4d8714290b79b. 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/DEZ651335430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5a74f7bde0c01906e31481b31018da6bc074bf4522b9f0e4d566cc002cc260. 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/DEZ651335431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1f0800a90abb0d87156f1758de363c108c62110bacf2929e57d3c033c4d46f. 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/DEZ651335433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccccf43180a742f1f1e6352a4f2fddea3d33daa1a31770e82ec4cf89e2f8c1a6. 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/DEZ651335434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7c9b776fa78a2ffcee1c8123f2b299845f7c9e501b7712ace83a01fa3d1f95. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEZ651335435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89a118aee1b6ea7bc54770b700406e67fe387c005affda574c48aa212263fe2. 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/DEZ651335436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb08297d297d36aaa9ed29e6dad861671d2e4b63f66bc6f0cc9ae82357a20b3f. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/DEZ651335419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3974ffe3ee2a7b2ee512eef6addf7a55fab749eb5ba67f50e493a74769d88c04. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/DEZ651335420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cce32e1b917b6b2ee707faed8bd2ca3aa22623cf764ff1c0eec1080dc45e979. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DEZ651335421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ede59504d2e21d1ee51a7e52b675c4b54debbb320e4ab4ab817b355c2eda468. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/DEZ651335422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe599c40df8b26fd871bc20e4a40efa7c8d93006bbbe026692cd897b10ddae7cf. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DEZ651335423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52cd0e8dc604a3fab097caf4b43e36332caa8aabf5196e715a3ee5d127fa8646. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEZ651335425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc69fe56b4edcd0ddc1c2a5ba2487dbff830eb2c99f212ee6756e155bb39ec3. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/DEZ651335432.