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 0xe5e0519102e318afe1f8f37e893c099506b829295d8972d140535a189d61e138. 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/e0b3b526-8e47-46fd-9e6a-8aa2ca75f834.json and https://artists.proofprofile.net/proofs/artist/e0b3b526-8e47-46fd-9e6a-8aa2ca75f834.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 0x72ea221e0bdb913e1ffa611142dfd110e5e6e0eeb35a14b581496a1477e66222. 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/QZNJW2424974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482273ed9146c5f2fbd492e6df6252a51bfe0e6666aebe45ec94b721d1432c87. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZNJW2424972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab23788b3eefd48ed3f4c1ea25dbce3cde9ed513c2cf2ad051c5d9869b8ea27f. 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/QZNJX2432292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694892a17a1b39bee4ddcf6e7dd5ae26cccd97992808bd26039890392e6b9b8d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZNJX2484386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2047b7acf4f66e1f1007cfaca6f1d1e040fbc88f7f817898fbfa4ea77baa89. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZNJX2484383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645ae2d527570a22a8131d14395bb876d95512459d356ef6adb3f4d097c7d12b. 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/QZNJY2442155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc619c5ac273fc355838d69ff2ce028ca1a4f9652cfe7b54b98465200e9df0881. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/QZNJY2442156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd391032da8b4751e0023533d9ba49b6586f481a38c46d8e9636c650bfc91553d. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:27:19Z), 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/QZTPX2461587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b8ca83193f8eccc62637d577ffab415e928d20acd8766e6dd499be3ed4ddff. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZTPX2461586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4285e386ce99c25eda84548679d7ecb2ca5ea04960ed2b3bd7dfa77e49b08d8c. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:07:18Z), 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/QZTVM2409227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7fab37253b199c745ba7bea7a3188af79b5769df6c4f44ec1a175e865cb4146. 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/QZTVM2409233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9f0ac7648567c4f195a7e7a0d4e4933874cdad4af163685dba4f4fd04a352d. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZTVM2426870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035f6ba8ad9301fbd9ab1cd79fd22ee7ffc6775f2f1142e553a9d2c7ab4a395c. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:58:49Z), 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/QZTVM2464397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1a22152882bbe580b4f8b929d68325cf6d15ddae1daba55f58514ffcca190b. 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/QZTVM2464398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5b0969e18f3d002868d70efc88009a52723722e7454faf4f0ac2c5599d348d. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZW9K2472559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8127afcd7fcb7f8ae2beb1433da19601cbc176904eeb5695faf941934ca823c9. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZW9K2472558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf52ecf385ad4a8700609234abfef682dc14d31167c68ed852ecaa3e04bdbe9. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QZDA42507431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8d7a9e04ef80da02e530a3c69b68db91d70a585bbe677142eb459939c47e1e. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZDA42507432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70cb03b5f53328925bb39acd7621da69d52d57d00c63d739c47076e9dcffe6d4. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/CA5KR2519887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f064328bcfae5acc673b2991727333b136d7340a04f5347339f4831160ef9c6. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CA5KR2526899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8d1bc4f78934f02a7f8b1f407a1b49e0f0083c294c72c9458614bd1b9369f0. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-20T00:02:40Z), 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/CA5KR2526900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9839cf86fccdcfea737b43885d581cdc656353b78403860843cd96ad65393f. 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/CA5KR2526901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326aeb3127db19691dc17101725c0ca29dfb7c97f62e31c2bf2d5b00af5fde18. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/CA5KR2533166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d376c83ca599ca07c1812aec115a04ed324730eaf79aa187c1b6792572e38b. 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/CA5KR2533167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe530f8295b24418f858f8e0df4e1c63571f7f9fd33e6a12b100eb7d080e51866. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CA5KR2533168.
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