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 0x1d4d5be3df0c8cfe03e2fb66ea082f7932bc113070fbc2154a997af38df4707e. 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/8a3cf5af-f88c-4859-b2d9-cea6f8f4077f.json and https://artists.proofprofile.net/proofs/artist/8a3cf5af-f88c-4859-b2d9-cea6f8f4077f.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 0xa967d9af8a0c908046de4c4dd15f5733876d4f17e661454d88f4f6bb7a73a43a. 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/SE3GO2307801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d04b262e535233271df21cd98b5eb33e137278ae966e63333fc3f62897966d. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SE3GO2308701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1b4baef14e2ef68148faaf56580b687bd51f6136c3e21bd34d3c10e1f62673. 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/SE3GO2314201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ca2b1660348b5395d28fbee39702f370ef0e1cea511d126bd5e54a86ef4ff9. 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/SE3GO2309601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d04b262e535233271df21cd98b5eb33e137278ae966e63333fc3f62897966d. 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/SE3GO2308701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa967d9af8a0c908046de4c4dd15f5733876d4f17e661454d88f4f6bb7a73a43a. 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/SE3GO2307801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9498528cc066f96013eff54ba3d9d496c0ddb8a1b43c0689b5cdd61ab8817a. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/SE3GO2318101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb3e92552d5fc3f64afa5975b4523c2d991e13031e93995c31e0335d99aa0c1. 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/SE3GO2316201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3afe92c0c0e883831d7872ad3294ed0c00518b96ec9dac8ce2ac623d32fe9196. 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/SE3GO2311201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3df083f9f0b05fff11a9aab560103f4d072100ac012d45ac31ab084fa3a639d. 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/SE3GO2308801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e4105c15662dcbb976422fe0bf6cf664dafea21fd6f0b3d42f6b9ba7bfa13c. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/SE3GO2303501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd48e2d00734891180672a4860b960143bf0c1479652c6ee4f0897d7532a8d62. 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/SE3GO2215501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1de5385f71334a6d9c39659d275996dded6d6e32c01ffaa95a0bca675a9c54. 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/SE3GO2215301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76a8eefe747f7fd27133a83f8ad05aaa33e5a034730d375ab7ceaf4351b28a8. 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/SE3GO2211401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8aac83fbafdfd7e95e323164ba3bbdb74f05dcc080744c56fe8e389fbbd270. 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/SE3GO2212001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72df15a971f1aeef2f1e5a2fd8d0d685e1a1fd511d5067987a2bdcfa819298d. 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/SE3GO2211301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71c27bbc38a50c56f620a65c8ac4a58686c5f6cf1240992024ad4da32977862. 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/QZK6N2208307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8388d99502b806ca172017c9002a6f32b8edc97e9f1061f97f0edcb80b8bd842. 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/GBSMU9562903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e368928c1aa1aec8d81ac5f50c55aa0bddefec705023d3ea48e8dc7385dc0f. 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/USA2P2018579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c72e308692509f28efcadac8039330ebbc510fa33eae3ad61a28d1cc73d4af. 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/GB2LD1900360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255e250e1a0045125330c06742c13fa4b3673ba376b68b24b52d0db3c3b8b5db. 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/GBLV61900417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2451dffdd7c088a4cd5321e942c4f4daccd34176dd6e6780158314fae949cccf. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/GBLV61900416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658a1679a7083b679c96f96ece59ae93577f0ba23de96a17b781991d3d73b299. 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/TCADR1844779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1923dd77d6103801eb4489602822539b1b07709381b2359126664c5cbfb2f11b. 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/SE3GO2400701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4c532d249cfb578dd7987c68c505d2295d53f6300cb6f1b656dcc901278f91. 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/SE3GO2407701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e16eb7c83d36bc334226497638f2e2942f674304b72ee5e6217209406f28adc. 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/USDM32132501.