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 0x90f015e4923cee4d47eafc58db8f32155e5b174d4e28b7f94210834c9f4ca816. 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/f0acc284-8159-4783-bd32-19036f6dca48.json and https://artists.proofprofile.net/proofs/artist/f0acc284-8159-4783-bd32-19036f6dca48.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 0xdc78d463d94ec1e7fa6ba646fa63af349fd4c4ec1bd3da860c8a0e735f290f88. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCAEX2086871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701d37d6bfa13db3761c4cd3465065bc952d48a7d4b3de20977542125af973ba. 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/TCAEX2086955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b2340e3c53c2e7aa50af602081f53ce1b0e89df03d4d4be42e66404fc63c96. 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/TCAEX2086952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47045dc446362944c1c120a75f735d99661df8f29ab3a3dc8eceab13e10c36c3. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/TCAEX2087761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa0d0f82d0c85b94b95a69655428a7d524760fc0965aeee64d6b028cdacb1fd. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/TCAEX2087822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98f4ca25fe72647055359a7b0e4c9845d2e9440f8a2ba5b1b499d4ffba51839. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/TCAEY2015779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b36b7bc411dc8b67f2c8da4267d73ef332b4c37b73934fd32aafefc4614a98. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/TCAFB2069315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac076e8962223b496e1709ddcac6a7792a7197175ba167ee48f2c3ac49756523. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/TCAFD2011754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77e03212f910ce9e417f37dd358fccf7e98987bcd11c0c0e669fd3c02cdda56. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/TCAFE2071038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d9a234057c7267ad2436cfedb43d80ea2f674d30f0e8c7dd82da430f0ffad3. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:04:46Z), 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/TCAFE2071056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f8109521b4c2899bcb7cf33ade0c6d63728d864733d43cd204afcc8992b7005. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAFE2071126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0003a322904f620fdb4516bc705ab8f75ef6b62038af514bf72607675bfac21e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAFG2054717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59194b49a80d8108ea4f25544180218fd60a8460c2620d4dfd1758ebfb7eacb6. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAFG2054783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83bb489dc651d2e4137a32790541d1161a18ad01ee400983caac5d81e148e05. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/TCAFH2077337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8420c01cff1f28599ec97a71af0c6048b8359780619821656663fcc94f7d907. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/TCAFJ2112438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75946064b656fdf8bcbc406ae4f5a08c8f57c9caab58dbf69e1c6675daaae262. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAFK2171775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd580b8a810666c6284c6e114195e3472d706b93f3529a78f8c21ec64d8c89ca4. 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/TCAHZ2415037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee3d321f2a15d69baea80af9faa9de8693fcc7efe52fc1c754659d99a2634c1. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/TCAHZ2415117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79346fad60f931773488dbb56dfb28f2e123a827d449cb3a031f8d09329edf1. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAHZ2415178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7b6ff924684c46576b9a3a8af50a3769fd80356aef636ea8d4cf8647d8c3f5. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:03:49Z), 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/TCAHZ2415208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fdb03cf9904376af7ffa9085bce9f4096fb8ba2cc432cbb19a7a017870292da. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:22:14Z), 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/TCAHZ2415262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdceb36dfb9b58b845f5b8383af2cbeeb1236f7256f8c7cb0a1a94acaf17ef627. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/TCAIC2461859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6463fc085bd1c6dfa7a93918cf53480ab7bb2e02ad5d2b59adcd9d47c2a786b. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/TCAIC2410782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713bf88657355bba805de54af37babe5c33489da2ea8120a247f114186087ee2. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCAIC2410910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88cafacf6508590c1eacd0701a10c268feab13bf9d6b4658c67624b43b4b574. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/TCAIF2416575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688e90005964d355ccdca99c91fc13710b5373beb907bff355daa3c45e9d2431. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:27:00Z), 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/TCAIG2416609.