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 0x930bf847eb1e190da05479d904b6b168c87590b3844a3f43e927d3599d3c3d33. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e1ace448-d998-40dd-a54d-bcb4192f653a.json and https://artists.proofprofile.net/proofs/artist/e1ace448-d998-40dd-a54d-bcb4192f653a.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 0x60b6442cf9326c31b53054e36b10312c3efd140a18de8140bafc25e1c7a95236. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/SE6HN2354244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b488a6511580b2d50d5aa651fd58e6901ea4e54476f1a4a7115c043b385e7b6. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:41:35Z), 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/SE6SA2361581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7bac6321c2240a1db3345075a294b21b3d6c0434be62f01f3e8a0b65dcfbcd2. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T03:58:44Z), 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/SE6I32494445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbfcde01ac66451cc37e19201eed6bcf53efe881faa6c1b5d9c23f31e5e301f0. 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/SE6HN2442302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af0b53706dddc1c68ba98166509a8d472875a29398467245855527aba00dea2. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/SE6I32440195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8acd45f1ef2cff437452ac2e91ed6062d431796d7f01d2786a565ca4929a47a. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/SE6QE2433445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690ab316fd97a263e421e37f989f177f83c6058c0f1d4616cd380de789f74f31. 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/SE6SA2408297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59dbd743c5c4447e81a9de636c008a0cb5aac196b4c1480dab5306fb3f00f089. 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/SE6SA2408305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc7ccf2a5c4cb4f86e221357ed3e0fb03ff1921a4657b6a77c3afe75103fdb1. Chain 2 (Bitcoin): anchored in block 957556 (2026-07-11T11:14:07Z), 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/SE6SA2408306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5df2a20129b6f9c701a3b0b2729f5d8bf7fedd8eeff86fcda0ab7fcabf932e. 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/SE6SA2408307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c5afa0962a520e43707a01d8566c786cd549cddf8830ac39673af8f956ebb2. Chain 2 (Bitcoin): anchored in block 957556 (2026-07-11T11:14:07Z), 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/SE6SA2490196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf179851cbe7065dc5e81a9430f9f8361a823e0c74f2f04c71b64754617df760. Chain 2 (Bitcoin): anchored in block 957554 (2026-07-11T10:39:45Z), 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/SE6XW2413742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2ecf4eb637d22dc219fdfef930264bfdcca83bd8b4486966c51127d3bac4fe. Chain 2 (Bitcoin): anchored in block 957554 (2026-07-11T10:39:45Z), 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/SE5BU2550058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2249fd35612374d973e5955464816bb1cead6e3a4d6c34b8a95cf721378e32. Chain 2 (Bitcoin): anchored in block 957552 (2026-07-11T10:04:42Z), 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/SE5BU2550076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d61b0b56f4c6b2ae58e679ec8d64f70f29820461be10d40b1907ba39d7a244b. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:59:22Z), 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/SE6XY2522455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c645090fa4633b3796d2dffcad28e018c2e59a2e11a223690627321c7abc47. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/SE6XY2583215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43701a3fb46e581510622ea9a53e501cedb14a25ce92ff535f71d82ade235c9d. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/SE6XX2525828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7303719bdb9206c9177a2073ee74a0711e27f87b8ddde10e11dd8c353d2979c9. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/SE6XW2505522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0f64ba1821202ffd7cda298cefae2553c1513b288c804a922cd4afa465ce06. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/SE6SA2556168.