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 0x77e922432484b566c52c4021fa13d17c01feb21feccf4de71a16c875ba4b84c8. Chain 2 (Bitcoin): anchored in block 953660 (2026-06-14T17:20:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5246e0cc-ad96-4dfc-b842-c0d110db1b02.json and https://artists.proofprofile.net/proofs/artist/5246e0cc-ad96-4dfc-b842-c0d110db1b02.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 0x5bc21e351c19c591d98f7d54fa8670456a97e05548dc1d1ae94a9372ba3f5972. 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/DEE378300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb7eeaa109f3a97919497d01481f4c5c18ac48da1f1fa269a9e0eefffe1b8a6. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/DEE379400057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0936ac9fbc376422e69924ba576d09d19c8583a169241042925960397d09307b. 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/DEE378200067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f83e267e47f5a38451b77e0586f5e1a1550461b7f85178b20bbf81a43b47d2. 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/DEE379400177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e14d3844f6074dd2375e5a36fbbd3acb03e632823f2185e4687108d6157a215. 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/DEE379400197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2f8de007af76097bead4b0bc926e0cc6be1d558303766ce11cf22ea814ee09. 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/DEE378200237.
Avant de mourir - My Prayer (Tango) - New Recording
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada86f8da4039f0a3c73435e81f0cf7fa0e50d2a581cac102076533fea517cda. 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/DEE379400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d186a49ce1f054e3ba461e9cc319646e2df64ef7a2b0996f22651f07026261. 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/DEE379000037.
Schwarze Augen - Dark Eyes (Tango) - New Recording
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f1b017c39ae9fe6e68891836e9c41503f8d474f31fed0f70fc388128634580. 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/DEE378900357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f5db8110a79b6fe1e0e2043c10048e557b17f08bafb7ea9805bf51746cc82e. 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/DEE378200257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc9d13f382f15ea2e133497ed6989148da2a1b467ed4afb87c7108020a4504c. 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/DEE378300117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da8a26f94a88216851e0fd94e06f533acefc08d9acf3402619fc0a0f379b29d. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/DEE378200107.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b97e89bde7d34e71d29df3ecd188bdfc4423663168b878757db2c5c1fa2763. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/DEE378200137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceea5e0d230a10fb9151353dcec83ae0adc88a26ca1d458e2c146195267ff3c0. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEE379400307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b459360682803fac4706aa18d3187e4f0cfc8816d2dec0979cb4e1072c6933. 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/DEE378200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19b91f8c30eabb318365af992eeb31fd504e0695deb4fce065ba7d8cea3517d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEE378900287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf799ebf3ed6b23d979f0d3be559bd7f67fddf0c6e0da649a733111bd6de2fa2f. 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/DEE378200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59824baa2cd090cc00027eaddda68dd18a7f1b89e22634a10d49061b2c2540c. 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/DEE379400157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f2e1f8714a3f37a2114aa26a2be9caad6dc56848e0c9ff76593b0fa93569ec. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEE378900307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6334619e297abea88f46cf8c03fdcc0890c74ca9b9eefe7e636b3e4c4bcab5. 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/DEE378900317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305f921c2131f94f5504498f32ad9390b732e9c6dc45eeb43f0b974805d7a53f. 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/DEE379400207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ab4aea35e8e29c6accdf7eac88c60f359d5ee970c5aab678607e27cce946c7. 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/DEE378200197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ea6c5b251d5e2c6ba8e158dda076e17092f4dcd03969bf2afec6df678d181d. 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/DEE379000127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcedc7c258f8c604d3e28c3a1c26af38bda61c82554b18a1dc3b08167ea69fd2e. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/DEE378900267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041404928f8a20a08d45145aeac0810b1e0833e8292a550fccd540a7bd779b9d. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/DEE379400217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c8d9bff418de64090574e1378347b35e193763cd5b63428dfa7f260dbde7df. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/DEE378300067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f79e10a73c6d3ac209110f8db0f29a687214b5b5473af836c312fb4dbf26a97. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEE378200177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1329bde4abd6594d7ee9a73ec825660074b984a7af51a003ca18a5f77cffee14. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/DEE379400237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92d9607ca9e34a8b5701bfbd889b54f2c938d5263dd7b0b94a492f6c4412c59. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEE379400267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02bbc7d8ab89f14738b49e754d15e51b459a35fab40b598cc5adc226af17578. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/DEE378200187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd542673c1d6552c798daf5bbb00fd83fc9933b62e0ba2b8e7ab19fa815ed44da. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/DEE379400287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfce52017fe73a59ffecd68669196517121a5c4b179359b539785770357683e6. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEE378200227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60bb944798de0fcaad9939859d8ca189c5e18858ade9e77ce0196b3ce7c8c6c. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/DEE378200247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9d93b57cf0b8eebe802742f486afbc06beb5028258d68d301c5c4bc8c52d7e. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/DEE379400297.