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 0x644de083262a5b5bdb8cc54df86e8928b3df211dfef30ae12a577e62fbe8244b. 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/ee96845f-f7b6-4865-aea8-b1b6d243d181.json and https://artists.proofprofile.net/proofs/artist/ee96845f-f7b6-4865-aea8-b1b6d243d181.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 0x2f565c2110f589669554ccd6a41b6565e532eb618adffc1818df817aba9c7c11. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/SKE941300106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b584a22e49cc4c2422602c74552383bb794b9dfeab46e352068034c3eb8896. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/SKE941300109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81327f8e792f99a678517e74eec629dcbf14963e784e0530a4873e8c8396d7c6. 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/SKE941300111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9edc8fb00e662f76910d3e14e27fbdb623df21fe1af08c712bcab1a4b0319d5. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T10:03:17Z), 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/SKE941300209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b5503b82c549e1bc6e999f66270f8f2ab84d8df7ae8772472758078cc018e7. Chain 2 (Bitcoin): anchored in block 957665 (2026-07-12T06:13:49Z), 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/SKE941400609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf57b10924e149cc2da1e7282758e91f524fb50ad84e438ec6ac6ceeaa8e7d3f. 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/SKE941400610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b6936d401c0d9d8cbe15976176d6fbd81ae547a113b0645426ec474b65dc2b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SKE941700804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15603b3d10b48d00429b0e9eb41ecb309c72fceceabdd673016cbaaa94773be. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/SKE941700806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0dbf0fa3e0caa5ee1a7e424dc250b800391f790fd3e784c2bb32bbf251e7665. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/SKE941700807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea796160f08245490c59986d4a058d740eb077f7c834675e26c831a2a169673b. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/SKE941700808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7087b302315d39ae4f45ba534ba51cc4cacf3563a4342caaafaccdcbe9e8e352. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/SKE941700809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275d6c21a3fc9087b90223d103b9f2f15923425a7e4935f535d6f03c3dca60c7. 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/SKE941700810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758e03e43b918ed4887b4007b51146139b1952a0d31c80d6cb04c08d829dc3ec. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/SKE941900904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb901ed65b8d31f5cded40e4a477b7def70ed37fe3f17649f7a9d2141d5791b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SKE941900907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd576e82ba7b584145fc585540a30a858dab44d75bbc154d4ca787a646dee300. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/SKE941901001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe5617298ed2cd601aa8d02c6c0e0031eeb6a92e26fa598592a87ca73f5f7e2. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/SKE941901004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff1f3fe2e2ad290ccececb0104f20faf1d21c5ed14f3fff18e73c33ceba48a5. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T03:20:07Z), 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/SKE941901007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4230571e0ef8f7e538def94f9be435e9be63f561dc74d30ca8d9e7aa98de1e. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/SKE941901008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a9bf3290e7e00008a1fdf69a721a74e4cf686dbbfca3404d447a9fab9bd846. 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/SKE942402404.