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 0x26e138ded565e24263b7bc2e359b24de98e3fc5d4c968c719ca292e8818d6695. 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/9d73573f-2413-4ac3-b573-dd778b836590.json and https://artists.proofprofile.net/proofs/artist/9d73573f-2413-4ac3-b573-dd778b836590.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 0xe396cc870bc7c74ea14d519840b707b57446ac0f1488fa8a2633341987e21a4b. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/BX4E52227005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ced70302eb3ccf1a5802f67e4a9efd9f09652bbbc21bc26bb0df5e277b3bcc. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/BX4E52227009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec2441b4fa4858aa1609131be9dc9ed9a57a7fd68ecb1d6d095d2c8624ce537. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/BX4E52227011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f368241a422509a5a90b245ba8cfb536183eed3ab7c7526b4f28d6428d7c279. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:50:33Z), 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/BX4E52227013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4d018621bafd27a901cfab0ead89617d5af11ed2c8f093c6c5e8e07ad4a1e0. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:03:18Z), 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/BX4E52227014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68c1b6d5a137b9e91cbde97168b36867e387e57e3b096074a9977f7ac6fe064. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/BX4E52227018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8c80ed317adf0faa8a1f68b5c800f0dc3c0891e9fc5ecff4b6ac1d6abb95d8. 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/BX4E52227019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74af5cb644d7d81d44fabf5b423296d73509b6fd672c9723f30be94e5d3b5367. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T14:02:20Z), 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/BX4E52227021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe970f999f7f253f9e4bc71b7ad12389dbcf845884580dd3f0b7159e24356afb9. 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/BX4E52227177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8c6f114563b52df9bc5ea014c32bbb65be74bcf604b8fb41d52ab594866ffe. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/BX4E52227178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00eb3a6c15a5ce2da45f400bfc53ed83ddb7079399c5892436827f1a6f99a5c7. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/BX4E52227179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd41cd85fbe32c231b1d04cf6aec61fcfd1f5ef0e4ce19c220f1d42d4f0a5248. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:09:20Z), 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/BX4E52227180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08efb0f5bbe0509da820262b26688ac915f2c14c823cb575c9c9413554dd1c3. 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/BX4E52227183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20e0547f44497c47b52e658d42e7892aa75d780411bad1d467a62d8935afbd9. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:33:37Z), 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/BX4E52227184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55452719dfb1e79088bbabbf1baf9a594ea79f3d36abecdecaca2639242bc77b. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/BX4E52227185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d97b9cde91645684c728ba0e43f794292aca3ce1bc82c40bc8afc400046261d. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:10:52Z), 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/BX4E52227186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1950077736d7582c79df3b5890694b4e0998e08076a125922462a2beaa6f31. 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/BX4E52227187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d489a724f3a06dba1853c8054d5457ad31f41b98c4560ac2757e1708b33cddb. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/BX4E52227188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ba9dd6536183d7784aa3b7a34c1e683d6dbe996177d07c95773d27a814146f. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/BX4E52227189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257d6124f0a954b749720c4c4b7f7b67c5bd12e6675aa7c4105fe8990b26aca7. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:24:18Z), 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/BX4E52227190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48bf1a9888693e08632328d813d3959e49aeb5c45b275c030dc4fc15e95efd18. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/BX4E52227191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97eb6dbe597e2746fe8456c7a34b5ee64f5bb45d6270f00ce40ee44b67d1545. 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/BX4E52227192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ed94156ee190963e053f59d47cf2fd34b7750a99cfde8508dd6338f204e8b3. 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/BX4E52227193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85fe31b6bc65c54de3e3f4ec6ec66b9e37014724872192849d70df60407fdea. 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/BX4E52227194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29b6237b852e44e6f9065fe1a67b3be129ec3aae5b568f783e048f632e2d408. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/BX4E52227197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb797599ebafd467cf4b47f8fac0facb7929a6617f32ae9eef6a75407fc042316. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/BX4E52227198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408b9d48afeff64700393126e169bd5fa8ce80196383ab0abff1c779c6d9b550. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/BX4E52227199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5dd4673ae788b0e6f53ac8275dec053434aca5fc0ae9851f9ef678087146921. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/BX4E52227201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961ea8a729c7c549bcd5012349d0fab4da0edffe949e66bd33f009d2bd6dc92e. 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/BX4E52227202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89c4f45f71d46cebcea9f1a1a926b8aff01dfba6804e5fc793856a2e2c2f662. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/BX4E52227205.