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 0x29a47e5e7f609cf3c2a95fefe0d521cac9cc42323dc46cdef293e50006d6464b. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5c67a325-b58c-4369-b837-d20e40cbe337.json and https://artists.proofprofile.net/proofs/artist/5c67a325-b58c-4369-b837-d20e40cbe337.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 0xcd073321f1d3254cc35650c6e60b93b371b3a968fc5b2d03b4749b878a50c8e4. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:09:14Z), 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/QZMWW2590716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22a28185ace65b64899558e9fa0603eaf6f4fc2bb22060d588138f6e9ebc79e. 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/QZMWW2590718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff9924fc24a5dcc6dfaac2196b23567378498eab42904414198ea5bac832a37. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZMWW2590719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe12cb0cdc24d56c16b36b24717911f72a4a2b0e2cee44ab640c417245e028a. 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/QZMWW2590720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc6f4b972a2c0dcbe4bbc03cd54a568de580a8761979658dbbf5a389ae3524a. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:01:26Z), 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/QZMWW2590722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b85ba39779ebf10ee5ba665d654700fbada3f98bf678f5f9cc51a32cd3dabb0. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:08:28Z), 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/QZMWW2590723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88f5f026715b3dd4fb0fea4014582ba950760d031c4f84cbb12dc7b6735de84. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:20:39Z), 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/QZMWW2590724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5a4578acf7dcbe4ae26d83e400be4e320f2480e369d610c77bb21d4eaa0b76. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZMWW2590725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c42cea72da91d1c0ba3c9754e8f6f4dd87ee1c7dda60dbe9d0cb104d814f6e0. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZMWW2590726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643a5a184cdc4ddd9eb64f9bb837e7687a9b57be8f61fdaf5ad61fff7965c020. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T14:01:21Z), 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/QZMWW2590727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2405edadba93d4048c794533611557f31ef08a469c6ec057b3c48845913211a6. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:56:04Z), 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/QZMWW2590728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d2518fca7c456c6d3d1fa2bb1c2b805d2865d8ac53067c526d9f7d9344adc0. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:48:57Z), 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/QZMWW2590729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35046a0c1e8f4f5d5b8149aee63e9984ec5aa444f706148c0843c897a010818b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZMWW2590731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a48faa06fad9113120f22f89da6fa5b6d4677572abacdbe61b5acd3be3e852. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZMWW2590732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7c6640d9eddd9fc676eb66a4fbfd31c046baea698b46578153db1a120ef9d3. 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/QZMWW2590733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b7b203e168868582e1a9de6c392c369d062cfd0ac55969f55113a7fdbc13b1. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T12:16:33Z), 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/QZMWW2590734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18201932aaea567a7d239d1b376736b3d86c86daa38bb4d921963e9d74f698a3. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:48:57Z), 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/QZMWW2590736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b864d108eeb55f5261d6c173ade842e8a9530a09a2dfd9563d799f24a177f18. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:57:22Z), 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/QZMWW2590737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e75b80747e909d8823e2e3a84a9bf064ff6b1abe28cd839edad8826f6c0ecaf. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:39:19Z), 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/QZMWW2590739.