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 0x691aaf8f0f47cd4040e48454da371bbad45ea3138b09aa7d260ecf62755ec7e3. 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/907b9837-2e82-4155-8db1-7a255f7fe382.json and https://artists.proofprofile.net/proofs/artist/907b9837-2e82-4155-8db1-7a255f7fe382.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 0x663f1d795524ef0acb715330322523b674290b6aeb61d0ad7375d7b1b9fe9f2b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BEDY11800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49bdc8b765b94fc7e2f79c3fd121468d5403919df50e24680f1cb94f9ae8cd91. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BEDY11800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97c55e4cd30c9514d9c0da03d96b0482546c12a0320d512fd04981374127d7e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BEDY11800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb1a7fcc3325d7b4a99a2efddac80a521c631fa55de761e237c41788f49eefd. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BEDY11800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093283e70b3c8d1b02dc9c832bfc1ed0dc6dd828c7daf5e9653fd9dc6428d7fe. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BEDYI1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef4e3a0a380cd310dfcd555e491be9ee669dc62a6440478a42a1dce17f8d632. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:35:30Z), 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/BEDY11900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0104a732c8ace7a271c1b8dc841b82f13e61dfb2baf16b9d4c5509f4167621b. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/BEDY11800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242dc06fc4357db070561fd12bd60e71f1c8529f92556b90cad8112e55a1f63b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/BEDY11900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55ff92763a1698313947919273989eae0a52bdab3b76a89e3b50ed0e3bb8c3f. 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/BEDYI1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8777bdadf059b3f7f49452dd1134211f18d03d635191d6809c5ac86f4522b181. 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/BEGJ52400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa44c66c70ab3bb85d71b03371d34d8db59fbaa5ba391132f0f18e6932a7eae7. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/BEGJ52400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3a02b474900a54586f77c7823b657b695d6e7e4911263bb77e4940055fd2ab. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/BEGJ52400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa44c66c70ab3bb85d71b03371d34d8db59fbaa5ba391132f0f18e6932a7eae7. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/BEGJ52400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3a02b474900a54586f77c7823b657b695d6e7e4911263bb77e4940055fd2ab. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:34:37Z), 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/BEGJ52400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3a02b474900a54586f77c7823b657b695d6e7e4911263bb77e4940055fd2ab. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/BEGJ52400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8777bdadf059b3f7f49452dd1134211f18d03d635191d6809c5ac86f4522b181. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/BEGJ52400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa44c66c70ab3bb85d71b03371d34d8db59fbaa5ba391132f0f18e6932a7eae7. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:43:16Z), 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/BEGJ52400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc939234e1d8db5d2dd2d9aed695c568ea67e523a284ebeb2b35743c335f95fd. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:26:11Z), 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/QZTGW2404943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1907fcbdd12640122ab1234100b8937ee6ec425add43cf5d3554dc1a70d47fe1. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:34:03Z), 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/QZTGW2404944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e4c7accb7907a561b17a670b5392600761abcb4c70299b20fa144efed982eb. 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/QZTGW2404945.