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 0x27f15e1be88f53ecdff703115b9fbd385d35a5e97b637d07d5baf73a90609a0a. 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/55a5bbbd-38f1-42ec-88da-b2cf882502aa.json and https://artists.proofprofile.net/proofs/artist/55a5bbbd-38f1-42ec-88da-b2cf882502aa.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 0xad01d4320c2df4009eb5a62b7a0585ed6fa21bf29de3d9eae1c8607fc9165502. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCJPL2065947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6fe0b585933d121ed1b827b7c33f7503be5965e4533d92c018943bdb352d4d3. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/TCJPL2065950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747b804dd53f3acce371c1839686566b8a2fbf0eb20117f18ea15beaf49faebc. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/TCJPL2065953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55db277b13f93bf5d4d990bb6f7994e4670e2fa11f53fde90bd394929c77a047. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TCJPR2210869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd568809ce99004a7538df9a7c636b466e227dc06b5c4aa47c3b38acd5252dd69. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCJPR2210871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ef1639ee2dbb6e933abd65f8b9676f773174127329b1ebf3d5095932bf1f47. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/TCJPR2210872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08519e5698d9f7713cdf157117d7ba535fff11e10599aafe95ec276848241f29. 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/TCJPR2210874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9164d8c430a9d26eae244e6bcfc7b8d79d320bdf3edaedbc0477d9d5b529a4. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/TCJPR2210877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6943bf2a6a283582790b887eef96648518da86b38be93b1ac9f250a9465378a. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCJPR2210878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3a7f5c10c1f15129ad087135a27a3d878449e5c25aec17a08b44aa3be5d222. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TCJPR2210881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5379d366f94c1f7dbb034f613c3d5e16729f878d2c5e935973c9f607ae5af0. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCJPS2245193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744a55203f1157b449d9f054c92366b19bfebc1cfa803ce00da57c35cf26d00f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCJPU2358576.
BAN The prologue of GUCHAGUCHA SoundTrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e210955696b85cceab9cb51a3b108c2534c619f8477739c6c78a349a021bdc4. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/TCJPD2544138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d0e573b2111ee6dece341d9aff49d1963fb6c100a5c07b930e2de7742484ae. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/TCJPF2522033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2640bfca0f9d3eb5ee7d91a781513209edeba953b38dcecfa70d2e04692167. 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/QT66J2507756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38838beee79f94249de220dec98e7bcf4dee2bd3d5e1b646eb3a1fd51910b089. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:50:53Z), 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/QT66J2507761.