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 0x5ea75bdb3b3490e0a9d0e7dc819b37a0f9395311d082f99171cde20358d75aad. 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/1e026cde-dee4-4082-8584-c272b1b3c368.json and https://artists.proofprofile.net/proofs/artist/1e026cde-dee4-4082-8584-c272b1b3c368.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 0x19f197c7aabafdc13a015604b09a08912a3391e675a7e41c46a23f4eafdd0964. 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/QM24S1704451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68114ec4ce9bcff08bb8d4b6da17a2221c475f83d97ee902614bbd0eac0e8abf. 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/FR2X41996265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68114ec4ce9bcff08bb8d4b6da17a2221c475f83d97ee902614bbd0eac0e8abf. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FR2X41996265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9b05a462d94a5f817ad4435beb82bf62f768db7dc9a6467ba7fa8389bbd3ef. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/FR96X1991471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35681df5489c71343b03bb8ad11f82cb06eb89be42e70b5d29d24eb1bafbe048. 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/FR2X42028771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a728daa4e36bd77a3d6c488a2cf271c86bc4909ef071ff753f43ee16152e45. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR96X1856786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf12e42f014acbc0d8079d027b5ea7809745d733636c2e34b19853ccf0c61dee. 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/FR96X1991469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cacae240aaa9954968e4848c85fd228963413f2c2d41358110b9856ec05e465. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FR96X1991470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a728daa4e36bd77a3d6c488a2cf271c86bc4909ef071ff753f43ee16152e45. 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/FR96X1856786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dcd3c2f9dad64a2557d692e552e42327eb4741f6d5123c3ddb6105ef3e63f9f. 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/FR96X1963726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55ea7e95a7cfbd5fc410d29464aa824d483301051b413c7b3f573d29debabb8. 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/GBKQU2087095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c673a4bec72341f152191a4a755fb740c1b56da12e3e86efc96a9a4f2d18e2b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USQX92004382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb811e24acd751b526f52d90f398f806ec576155936ac735fac91268be8b84709. 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/USQX92004263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a91a9a6db7e4fa57057f9074efb9b9c6fa1698e21b3aeb2a8b5e7281c418f74. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/USQX92004257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c673a4bec72341f152191a4a755fb740c1b56da12e3e86efc96a9a4f2d18e2b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USQX92004382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c673a4bec72341f152191a4a755fb740c1b56da12e3e86efc96a9a4f2d18e2b. 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/USQX92004382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb811e24acd751b526f52d90f398f806ec576155936ac735fac91268be8b84709. 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/USQX92004263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603d0cc18361a2d8aee840d14858678ef3414d79a984bad49d8acdc7d24ccb3c. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/AUMEV2150586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfccb38e465f106cd865b73c2f31d536e258968920cd472c8cace81f2a0b8c7e. 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/AUMEV2177281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845fa9267dede78c9502a21210d33e234eeba9b92cbba6d95277ace6a846ac06. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QMDA72384625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bf75ce11e7614e0e0e2b8dd9bd5b7ce97a49b2bf0ed9f330d8d5835e228ac9. 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/QMDA72384654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb99f9a575340d4e98213076efaaab3fc99f25a3be93d574f380d6b0000fa4ed. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:32:46Z), 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/QMDA72384674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc802f7f304a73fa4af29e538822a2820494f796d578b77e71810d08ca6828f69. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZS632272972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f39b781b199a395c5565446b4e9fc5ef01f24bdf23171587b4a959fd91e9f8. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QMDA72366360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2572e4dcd71f257ae6c082db2053f40b6c198a16cc0c434f94f34e6e29c7635f. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:02:06Z), 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/DGA072298662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2709c2c034174d62abd09fe94ece9545c2558f9b597f33c7f1fcbfc1ef8f2eb5. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/QMDA72384092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7dd12673bf89567253f52da28ae1b0bf75afe99b2c34821a6ab1eeebe53c25. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QMDA72366352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f55d9f49621258d0b6f0ac66b4048915fdd3f725ba401aca4e5fec1a813b305. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QMDA72340014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa215193f1d2aa36ab3e5f94cdcada6b7a1d0df1e7552277bbb79ff38920152. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM4TX2489200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fdff7afe6b8ef7ab02a3f2e162c8fbe0c9da2ce2c643b6c7f9becdbcd5f17eb. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/AUGBT2498397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2584b6ef2b59ad434d3c4d95f1632f195fdd371e7073a566cb472e98f3bbf6. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/AUGBT2481279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded4a0c586ff762a26c142c595b86da1954391809a61ba4d0c39564535cf9874. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T11:20:16Z), 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/AUGBT2440544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0498fc6f853bf07f3fb23563d5c7ea20fc6833c1a9589378c2fae9d2022450aa. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/AUMEV2505631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259572bde35fce4393c55b1ef85317880c566884992bec11a82ed47217230162. 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/USAT21700831.