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 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 0x797e9f64f0cfc0aa2fac27132c3d21eb5544d0fabf34811b40c962022980d6bd. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a67a7db3-8833-4a14-9bb6-a038cfae7fd0.json and https://artists.proofprofile.net/proofs/artist/a67a7db3-8833-4a14-9bb6-a038cfae7fd0.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 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 0x6f82200d7850514c8d2ac193aca8832e730271a85bbd02def2f0ce529911bf32. 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/ZBAJE2100129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa5a09c54a95545ba1d561c5ebb7efafbdfcd8bfab80137d4c21334710001c7. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBKQU2064644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f17c32f57fab5856d7490d8a0e415621459831c86cd05c2ea31f4ec34ea7ff. 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/ZAY592400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7443cdace41ab9f6ed3ccdb91ea641de74d23822a0bdffb2bbe7d29883c27dc2. 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/ZAY592400065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36670eadef60db6863eb73a111c9953a3e8ff843f41b52316427486d025f326. 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/ZAY592400066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b343bcbc0f4058823d9cca89682ccc8cdb84e91bd5a8f3311f1e7a073a5c5b8. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/ZAY592400067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad66738203e122815c55271a3b2d427bf9cdb25709e84bf7c91951b120a163f. 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/ZAY592400068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5faeb406c7dfaa1fa65466f2cc39eace903a0a1d68a4ec7f40a9bec55eacd01c. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/TCAFT2117160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3541ce9c9258d0f3dfd2606efbd4343bc3560e5146d89969afe2438ceb7aa7cc. 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/TCAGF2241555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c97229fbfe1e7c40c560738703373e34bd60e585f2b12370771bf4345ebf2d0. 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/TCAGF2241558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93938dc7554e770779f1f7c55c61158e3283fc91e0cff4084d22db3f99653bfc. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/TCAGF2241561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b2c2dcdf0d7e116921e7f63446c7606f7d7e48e26c3cb3015dfe5d1d042634. 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/TCAGF2241567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0e706ad05b13e7975ec1401d3f4ec536789714700e6131cd4a18b1c1e1a941. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/TCAGF2241572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac86be6fa78ce181171975655aac1fcf6742c9e227d4a2cb4714d8fda5347e7. 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/TCAGW2399348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955789a5b2b7210b22a16061094d033215e43a62839116e5cc273900c3411a4f. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/TCAGW2399374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeccb456bbdc4bf0bb0827d35746b81b939f4683a2258209e2cc4c0a8b009728c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAGW2399416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54aafd58c4cce8e666c589b60ba4e02bffcc4aaceba18a1e297d4dcc1a978608. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/QZ5FN2336595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb4a223a7bf53b73255b283200cc4a46653ec8d9bce2d433f7cf20b78abe493. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QZ5FN2336596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ebee1150af11f7ad5bce51de3606ad7fb2bb1dffc39cc5e79bceaec05dbdd69. 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/QZ5FN2336597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837548ae827a835082978d62af481cad9cfc62ac2726cf13fbe15215ec29b269. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/QZ5FN2336600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c09662a8b105634716f556a29fffc1dc60ef20fb9b570c58bedac805f370424. 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/QZ5FN2336602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba98c66856ab1fc6cd11f5cbbe8fc04c398c7f2ea7556189e537c34da4a53baf. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZ5FN2336603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f08e60f45d8753021d57e9ffcc5384b3ecd3d0a357aecb2c09a70140e31ccd4. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZ5FN2336605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff73477e1f68294d3e8176c762db4a93ed25ad1c3fcb502b8b2f9f9e1d4e96de. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZ5FN2336607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f848611103b5826877e73bcbfdad9e405080b02589986d5e27a94b721ca4cdf. 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/ZAY592400084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f2696cc603d0947079ecc49dd84d4ce9e32b6fbab489947cde40f3e03206f2. 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/ZAY592400086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1ea51482b1d60141b20b80fbe2382c74238e1c8a311be51fcd5fd55488ecdd. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ZAY592400087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021af4704e3a072c0bbdf36520dff4b14c88ac751c04686626d99fef8a7504ae. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/ZAY592400088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8e9fa48758fdc671a2c2847d9b5e0834b94151724ba1963f0ef6667ba81656. 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/ZAY592400089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5579b16f1311e5735ea492c53075d616b48bcf52a86a89b0e0356150ace0e4. 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/ZAY592400090.
Cut The Chase - Dan Schultz Remix - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b4c4d846289ccbf266c1c8d6f655eb68fdc29e0c95b511c978c93278f2590f. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/ZAY592400091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4525fad165b5a5c886e154a2697ed1d97f0458f12c5c4edd012572ac47432203. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/ZAY592400092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeda2272b12968432e5d537e8bef1483f21d0f1fe83af9a3fb8ca13f81c90293. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/ZAY592400093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c2fb3d8fc0234e1ecd1c52a61cc6bd7a4ed7502693d256cca657bca56b84ce. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/ZBAJE2100080.
With You - Chief Joint & Phill SA Authentic Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc79781d892dacfb3241a64b3919601adf3e996b8e7c8cd47020dc937744cf8. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/ZBAJE2100081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67fc5128f8b3b6ca3e7adee2f669d86235f628960f5a578d8aad2930742f721a. Chain 2 (Bitcoin): anchored in block 960177 (2026-07-30T00:21:01Z), 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/ZBAJE2100035.
Nothing But... House Selections, Vol. 14