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 0x9cfbf0c22c8346351b208fd2054d7b1c70621b7f30ac2c372e7db356ad5c24fb. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/77589326-8a36-4f87-b9a9-be4eecfc7b3c.json and https://artists.proofprofile.net/proofs/artist/77589326-8a36-4f87-b9a9-be4eecfc7b3c.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 0xaf2d55501a66399b437c93456026f52129a40f465625877c3a36d73101a679dc. 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/RUB732011054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565414653f59c6d56dd44f80b109f3eee0bbab0cd1cff1061efc2bd3d1a120b9. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/RUB732011058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75c7470e37ffbfea873d0bc96edd962c7ad61b4ba1166f047eefc4673e9a346. 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/RUB732011100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa31ad36f5df2772bc526554bfe5eac252f6ce3142df26db516ea0e178f706a0. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:02:46Z), 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/RUB732011120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa414c7cc4723b309afc91ab84df99c6ff4d84aeb16bbba00fd44b5be9164359a. 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/RUB732011152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b989cd19f3a271ccfddb8662f89c2c8acc7d8f8339e0fe2ade6945fcdabb45. 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/RUB732011154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77e4bb3598f5731fc805e3a1926fca685f024d15c0032116d4c5d2b98fb5c66. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:14:42Z), 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/RUB732000836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb739c7d5649076ec2af0788e0802d2127be19e11c9be9930d78157f332e994c5. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/RUB732000838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98097b8e6b95907236e0552a81999ed23caa6932d6b0c38ba6c053e653c5104. 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/RUB732000828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ea19d246354a0ad52be25ab1bb2a3c4afe9f1975fff23546b5f8b5f2f2378b. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:05:35Z), 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/RUB732000830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192667dbe3a25d809c6a6bd096ad5aa33219b6e578ee087e485e4d542ae6ffab. 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/RUB732000868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b691345c5cd822b9af789b774e3d075414dd0d6fb05ee72eecca628e9e4a5e8. 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/RUB732000850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11062a7107f37f8a8e551de822789bc62877a4aef5c39b853757ecb23b549ced. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/RUB732010982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9678e5e23646e5f65d0ae6be27eb54bb031fa6b09b82d19617802d19c7c5e2c. 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/RUB732017229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5d0e932998462e1e6597f111e64d063d8ca10420fd6ead64ea23e3170a37f5. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/RUB732026480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932462ad749e96a74b77bc8c9d5c80ab0f26e783adcf3eae3955ac2a039a0ae8. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:24:46Z), 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/RUB732026482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4216f50df9c034d71129c91bf2b23cf6b4ea983f28ec0f28514949afaefae640. 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/RUB732026504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb733c8c6c0df34d9f3337e5770f47a0968002438ae34d478a6810f9c6920ccf. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/RUB732002994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc79ab9be625f5fbf8cfac5853cff6442cf0f4d38cc8c820dfe3afa499ec04cf. 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/RUB732063680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f8cadba9c7530587165d964150c9a8cfbaad5cbe1be03ba96835f4f1117108. 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/RUB732071388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8008af07e5537396010168c6ec4d4544bacf640c88c4a7a84236472ae1005fd. 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/RUB732082653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb006fef7b21dc89386cf6776593dcf4d5bcadedc54f9a316d8baec87e70e2b8d. 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/RUB732026516.