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 0x6d8fed86860c0b3b4ccc4f2bb76a106c8f1274a95efe4158114696031cf8027a. 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/2878314b-de05-4b79-afb9-fb9d202fc1d9.json and https://artists.proofprofile.net/proofs/artist/2878314b-de05-4b79-afb9-fb9d202fc1d9.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 0xa63790369cceee1c15c97eacf9065fbec9554aaaeb9c98be4fdf5dc6c264b311. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:34:45Z), 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/QZGWX2159092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b40ae84364946423c70d2a65f5bb442d59ef8ee48b9db66b2f974c97bedd65. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:03:05Z), 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/QZGWX2159093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27331c70d8c198ea9fd96b544dbce139b61e18a5ed4fbdd9573d481c1e4811e1. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QZGWX2159124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99188a53096c681183becbdc951d4fab48d10ba1c2f47bbb50a7c35c06f1f67. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZGWX2159125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6898aa5af1576f1492f89ff0252467adde795166fdf4efdbdb97c892e36e4e. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZGWX2159126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf749b23e7034561b44929c5468560e0408c7d58866d76cc915ffeca5363f0fed. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZGWX2159127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9134085b617a178c45245b4dc0a575939c50a5dba12b6c3b302b01494fffd6. 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/QZGWX2159128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89869cecb4a0ddfcb94e8c34a8b4bf5298dda67faeb1080267f740b7fa15088e. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZGWX2159129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04492b9912cf611200549f0eebfa72ee22c00ef62f383cf0ba8dcca3e9e8165. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:30:40Z), 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/QZGWX2159130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbce899cfab4f813e4e6c6004a2b02dd8ba0f037502054c20092cd0ff5c30df7. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZGWX2159131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69497f39f346380f0301ad0c0568458f1c08b646b75083ca165de4d547e12b46. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZGWX2159132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0411dd07c05768c45e9ea56f67be610d61e2c8cb6f2c97854094865399dbe5. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QZGWX2159133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b342ef2ca58dd2c23f66d0e8cb1a83c75f596ae8276f66bf3265947373d6dd. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZGWX2159134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445dd2071fe8ce6d2e2e726b388d17e94534c8b8d0934cb4b843819fafe9b908. 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/QZGWX2159100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6934edb18eeb8210840ba18454dae52490616ecb968e684cd5cfb12603eb941b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZGWX2159101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cbc09d75fa43fc0bec7df8e75f73343e5a3f83083c30abb9c56ea2a6d5eab39. 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/QZGWX2159102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbcc6160ac30981342816035f29aa345f636cc606ea5df9a0898d30e3aeb942. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZGWX2159103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2070cfe1e6d3a83813a20acfe627fc2943aac583f01da488042065f3edc9fe0a. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZGWX2159104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dfded8bd43bbb14aba2e5d6fb061258b7a70c8a92e86e3a3f1a3815ea018f92. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZGWX2159105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb16037611880a3fedb9a5149804acf879f1e87f478b136a67b55d2e64d8a38. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZGWX2159107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7960712c43ddd76e342724c57a277fcbec1b90b912ae4c1506b935e94bcc2cb. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:52:12Z), 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/QZGWX2159108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f96eb582d272795e3f3d2b347940023fbee3168c040543ecb72164293b058dc. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:24:24Z), 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/QZGWX2159109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed0f5778cbfccd4c9efded9795e864a7d6ff5543081f8e477c93b3aec96e2ba. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZGWX2159110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8781cd457d74fb83e3cc495865335a8a457e7f482e93c544fdd82617d2ef3c7. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZGWX2159063.