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 0xaa9989c08fd1dcb424a5d3329ec45ca5b470514617dc7df8f89430c1269a5432. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aba42b6f-52bb-4d61-9764-1cd7b7e10027.json and https://artists.proofprofile.net/proofs/artist/aba42b6f-52bb-4d61-9764-1cd7b7e10027.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 0xc0769fa03c8d9e24abbf41ccec4d92ac665bc2333b65e4bfc36194c2416b9008. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZK6N2328693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be68b1c5cbd325433d7ed76d96e1950b8b6234adc29827debdbc931a196adda. 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/QZNWZ2385947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da949e990b46f6023dcfb59933f1cc043614baf2599673a6ced50cb9865508d. 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/QZNWZ2385950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf28fa8f634fda036c4024bb05c6b8d1d2cbff0dd9e59a13b24e4a1adcb8e77. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T18:53:01Z), 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/QZNWZ2385951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0769fa03c8d9e24abbf41ccec4d92ac665bc2333b65e4bfc36194c2416b9008. 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/QZK6N2328693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd06265f1d7cf30f2628ef9e194f15d570533c6f54adadfc08bd5d9671c58448. 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/QZTAZ2218905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4fb682466bbc4531aa0c0b36376039d88a703bee3bad5e5517d57b739da394. 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/QZTAZ2218906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914c3f826448a491121fd52eb81ccbfebe0cc2acf473e0cc0d636882de24aff1. 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/QZTAZ2218907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2bb332461958ba0e4d05c0a957724951bfd3c50b22601c7c518e65c1b72dbf5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZTAZ2218908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1a520c8a8cdc75cb66b21b014f3ad199db427f2e844779a78c3694183f556f. 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/QZTAZ2218909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e70029b57785c508c31e162b50d35440477ed36c5676dbf2e04455a6d475819. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZTAZ2218910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef83449a59a1c70976f8a6c9643710c639642aae26cb4253858214bb4398ffdf. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZTAZ2218911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ceae00a91ea53072032ad2977b1c2ad140669652c4418f808f9d81bac717d3. 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/QZTAZ2218912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b616cad68797da3b85720b60508d076284c8b9b79f7689fc9ddc2a188a4c5fb. 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/QZTAZ2218913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a5a43d2fb62b295cd556b274c1302851c32ae45438d64605230f3b1f7ae5d4. 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/QZTAZ2218914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde9ed1567dc917d00f3e1d81e1d3f057da1d1dd16b9087d2e938f8a9038eeef5. 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/QZTAZ2218915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf233904a1ce835b781ef0b445b058a0137e7f45c2f71476540e977d61a6d08. 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/QZTAZ2218916.
Jesus on the Telephone (sped up and slowed down)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4b3e3324fd788e971652f3513f12a13ba147b252eacee6700392672b3dd336. 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/USHM82230840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ddda0afbc80126b147e6d72f4e2c175ba088f618f186e3cca0f4330cf0ea6a. 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/USHM22212230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf908394ad315bb92e2e70ff19cedfa3c8af2a2da390277f9ee1dd4b42b659da9. 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/USDY42272231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd181ebda63c1e92568c5f22d4dff12896c7b7e58c53c5ae065bd6aa4025c711. 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/USDY42208836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d19cffd696a6be74c22bb254865aadd113a6715a19a57d607ccc278b83bb0b. 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/QZNWY2287894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4aba9295166f1a5b3af52ebedc12a076adaebfd9f507c567d243507a58c114. 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/QZNWY2287895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd925c363574b59fad9edbe899a262b00ac24c8d10a5bd9b604f2c4e347df550. 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/QZNWY2287896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa791a11c28ae80063bcb13bd866c3473f2f4a974c51e55138737f8f4b833bd93. 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/QZNWY2287897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec82bc53605b4a199014690b42afc524071819c289da025d1525156254d6741. 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/QZNWY2287898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6a53a6cc35685cf2458b4155603f0bb9dc6d37ff7767b340ad2ab583363113. 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/QZNWY2287899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9c58bdf260250c33a39b614f8e7b64e938fe506e611e3ee8eeed450cdd8b88. 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/QZNWY2287900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d15a8a6d5c34408e5ae0657d42d3bc2c6d40c7b44fd528a71e29ec09ef20671. 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/QZNWY2287901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42d63deda03363f94c312e2128128d612d344daca0872043ef594cc68f7b0bc. 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/QZNWY2287902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6903ece3896b9a2463ee3a2040077c790400daf5d730d0d3044cb2100b8f4b52. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNWY2287903.