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 0x64f7239dc7b61aa8d558054f94d6491bdd8193f4931c0598816960265cae8e09. Chain 2 (Bitcoin): anchored in block 953701 (2026-06-14T22:16:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/76adcf0e-50ed-45aa-b010-b0c6b716b828.json and https://artists.proofprofile.net/proofs/artist/76adcf0e-50ed-45aa-b010-b0c6b716b828.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 0x4f758cacccd1a8776e7e3428467882c790cb0c46d1319b761211b42845434e4d. 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/JPW561903219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c84973d17da3da116eb8061ed8c09806b5f86c3c15bd3d2441e4370816edc0f. 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/JPW561903220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02af6cd0dab6eb4b987c71615ccdfefc5c6b27bbdfad19d558cae6b04b1a1d6d. 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/JPW561903221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a875b1b4ca4cac83d12cfb2dd4e43a456cdbccc8038fa03c92cbafd16c9a10. 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/JPW561903172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcac8675718aac5b51239147484100c27477b9478bbd5c9cf6c7be64a47a3579. 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/JPW561903208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77db6b62e3776a102423fc34f6ebd115db8ea7426790accbdbe925a2754b8fe7. 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/JPW561903209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc7ece5ac33fc14f90cf04c2288331b6736315de9bd7a7638d843bec57af6aa. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPW561903212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bbed54522c69dbc553901af36bf1251a8e134db881aea5fb934345813a66967. 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/JPW561903213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f2de7aae2f11694bae0ad50928e82ae51d63a88c132c2a140eceac9209516e. 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/JPW561903214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d79a98b21cf93df17a22f9bfb846f6ca1569e8c3c01091b27347b031604ba24. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/JPW561903215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d9e840230d51b2b044ff5c0094ca8bc6377fc57018e13cc35856518f305845. 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/JPW561903217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68a01543cb1cb05e5380a25341f62f7e5939c067dc2a480eaf11a7f2e986e2a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/JPW561903197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ccf91b5952b941c08a8717182e350b586060e04c5468faf9a6107ad633c0188. 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/JPW561903199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537b2f6e7baaa9f0dedd547d9bb66149d9cebc8a097bf112967752cbc107d764. 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/JPW561903200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4625ed39291ade36175dd493a52db68734af36afdd270b2ff27565e95021d65d. 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/JPW561903187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b5b1039c1d553475c4a3866f6d33d711f90100d735520d455aba532034fd70. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:09:20Z), 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/JPW561903186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43310b596c1c2575425cc48b725fc07c4c38ca3c62240e07e58714886cb9c5f0. 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/JPW561903233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0e68f44228d7606d4b619ed28e654f50b5a9cb82718cf488ccc01f5f8524bd. 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/JPW561903241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a875b1b4ca4cac83d12cfb2dd4e43a456cdbccc8038fa03c92cbafd16c9a10. 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/JPW561903172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe271890d9d2848d53df524b27d75c768dd5920d2135c65e3fe7a9491228f66a7. 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/JPW561903174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdddcbf55c2aba926cb56b19f9f0c9aea08fd87fc8935baf52d830138efdfaab1. 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/JPW561903176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa418ef51399c33f3f598dd3733ce219a90e406b163a5dc3ea26f33984ac45052. 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/JPW561903180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bec25b08edd5c4694b32e819678f3d6570a62325ca1b6ee5b7f45671d532eb4. 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/JPW561903170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27025b71fdc5d939272f84d8546f139d01cbe9519da565126db037e4c9d22e97. 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/JPW561903152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684762e2503a819ade83492cd2c3398ebfe0e393508a4d662ee5ecf651eef5cc. 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/JPW561903158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e32a7abc07323179d39028d49e7291ceab7a231d23640f1cd745eddba0cf7a. 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/JPW561903148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3d80ac709ad6a70d28ec399093ed63301de29d8ca61147b158d16d9155b9e6. 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/JPW561903149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a0ebbace99923b6781dca66f73c60b71ce872ef0376075f7e51efd50b23e41. 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/JPW561903131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb58454db66a34307f6f628950a6a385ff2bd45964c8ee9fa2bfe0a25f9a7ecd. 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/JPW561903136.