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 0x780932f7ad99a5a02651a0955ca56f2f803cf385f0b40b670f167ab0a0b9600e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e7cf23fd-b4da-481d-8794-ecda80bbe9a8.json and https://artists.proofprofile.net/proofs/artist/e7cf23fd-b4da-481d-8794-ecda80bbe9a8.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 0xec53c9ac3be13557c2b950e3dcdfd9aa7594990942753df7096843b1a414e131. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/MYMQ32110001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e830fa26709d9524cdc28459bcfc8417721fd26ed0d292727ff6b0f038f57c. 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/MYMQ32110002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010afd32a4e7bdd77fec949a054c302246561f0f72ef509aa3ebf925921e8169. 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/MYMQ32110003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d699c9ce4ba5b07200d48e64894afde59a1dd6a3e04654f733b556f35a5f39. 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/MYMQ32110004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4ff231bdcfa6feae38164eaa1503f05f44d4d0186a15495bdc2ad3fd83f679. 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/MYMQ32110005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e96f31781650e970f84f1a1820a1f97f8602df50b2d29ae92f35f1193d1150. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/MYMQ32110006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d734eda8f7499c7727e90cc75b9e74dcaa485fc22f36b20a2ac070c86b582e3. 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/MYMQ32110008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964f60d2bc7890db7a26a3df4b5ad775f037ae271974d29eeac5c72e4bc685aa. 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/MYMQ32110009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006556596a703a59c20ab9f43a9ebb958b22e65f0d572ab2b72c3eb660e62af2. 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/MYMQ32110010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94de430e0beebe65371e4b91ab8a6bf4097f1affb5f5c098fa870d003bd7800d. 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/MYMQ32110011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768e31aebb186c09998b08e65012aa65ce8393228f565d51277cd20e39171e04. 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/DGA0H2316419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f097c005662eaefe769a0b05e8c7ac008a63dbef93fe1399e97dcddcc0ce1f. 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/DGA0L2428724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed9441542b66670ab2d90dcceac1d28fd4b7376b4b4cfcd84e267e55b2cc5be. 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/DGA0H2316115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43864f7b400e48da0ac1cf4ad7a4691fe1bdf9f44103735efe896d91e054d1c. 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/DGA082356836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab8143d5982c17ad377e30e7b35fdc0fe22475f0859103618ee8feea1501df4. 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/DGA0L2428725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d9cefc1b831e363759640de51e7d242b9371301960dce960059220252060d6. 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/DGA0H2336464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec53c9ac3be13557c2b950e3dcdfd9aa7594990942753df7096843b1a414e131. 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/MYMQ32110001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e830fa26709d9524cdc28459bcfc8417721fd26ed0d292727ff6b0f038f57c. 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/MYMQ32110002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010afd32a4e7bdd77fec949a054c302246561f0f72ef509aa3ebf925921e8169. 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/MYMQ32110003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d699c9ce4ba5b07200d48e64894afde59a1dd6a3e04654f733b556f35a5f39. 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/MYMQ32110004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4ff231bdcfa6feae38164eaa1503f05f44d4d0186a15495bdc2ad3fd83f679. 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/MYMQ32110005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e96f31781650e970f84f1a1820a1f97f8602df50b2d29ae92f35f1193d1150. 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/MYMQ32110006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d734eda8f7499c7727e90cc75b9e74dcaa485fc22f36b20a2ac070c86b582e3. 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/MYMQ32110008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964f60d2bc7890db7a26a3df4b5ad775f037ae271974d29eeac5c72e4bc685aa. 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/MYMQ32110009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94de430e0beebe65371e4b91ab8a6bf4097f1affb5f5c098fa870d003bd7800d. 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/MYMQ32110011.