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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640736d3a8bea10b944538725526871c38319413637fb9d1af83d739562b7c64. 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/2b1154ea-9011-47a7-9b73-f6cfc908af1d.json and https://artists.proofprofile.net/proofs/artist/2b1154ea-9011-47a7-9b73-f6cfc908af1d.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00dad519a01e273e55b62ab8f2b1d54b25146d1f66f9af7c82a5c6144599930f. 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/DGA052248528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f5cb8e72e2f7dcdcbe5b5e4b5036898f21727e670b6b71cfc499bae9fd2f7c. 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/QZN882256329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffbe77ce8741393021b80ef3d8dfec6885d40e938e6973242c2629fb3426c3b4. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QZN882256330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7f9f9ecd58122e4a36bcd24c73dfebf8a27531e693239ce352d012f0c8a16f. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/VNA0M1910335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5030372d1299271ecaa0db137d20690416fe508cb08dc77b261e81fd59628f4. 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/QZHNB2508187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ac2ed34b2999d1656e093430e193ef287796b4ffd551f897e99b1b79dae5bf. 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/QZHNB2508188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a420566b49c065ef46b3e75430e940c1922535de97c6d631826f50197f72e5. 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/QZHNB2508189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2506f59c0b606577f8d54a820ba5e4efe38a3ccf44172dce0a4a7c04f26d96. Chain 2 (Bitcoin): anchored in block 960161 (2026-07-29T22:51:26Z), 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/QZHNB2508190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a13cfab2ee2c9205170be0fb1523a53cc83febf16a9f06ba0185497c6f317d9. 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/QZHNB2508191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c642a39ccdd40eb3871e72133f2f9047fbb626513a8447ae73e60972da0f7e. 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/QZHNB2508192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ac1633af87ff28e9231f729300b78c74af0ad8b4156890fd449dfe70b519f6. 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/QZHNB2508193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab6ab66f2c1a95e14a693232cd974d2a707a84c0016f204a49fd6b995c64be8. 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/QZHNB2508194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f123bb00b1dc4610bb01a078b0cb038b1754460f631a3068a3242971fc8deb. 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/QZHN62549558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50894101ca9802b2b73a41c067559d78233751ec614f86740899642c3dcb4416. 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/QZHNB2508195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x731d9792cfd1e93e1320102083080dc0487d67ef6d072ef99e1a3ed76f2cfe16. 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/QZHNB2508196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeff0c82630db37bbe87566d47f13d54273923673b318b776e1aacc17f085841. 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/QZHNB2508197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x341ec315406f009b14891d38757c8ddacb51dd3cbb15bb14af3ef9799f57d0a3. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZHNB2508198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa657c4e7c83ae791cff43393ba6d7b7e8a5edd16c20809d4dcb99992f4688c48. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/QZHNB2508199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3cc468bcb4a8616429bef1e04acc2eb2d5d1c136e728aa2b62bb6045ec942c6. 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/QZHNB2508200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19b0822b5c62f08d40575f8150e4bc001503d3f68e91c73828ce330e254ea4b. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/QZHNB2508201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8f7a81e531ba03cf030a4668f9f965f1e9ca4c98907b1a2a596767e2fb6075. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZHN92533956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f123bb00b1dc4610bb01a078b0cb038b1754460f631a3068a3242971fc8deb. 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/QZHN62549558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99bc0e51096dd00b42b5756df5b1cad1707a95c90541a780ba3f209821526d5e. Chain 2 (Bitcoin): anchored in block 960285 (2026-07-30T17:26:40Z), 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/VNA2F2301416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5f3ab472033ca2287cd0b91d9f9858283ca3bfac7b42d81b86d3914f631317. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZDA72269503.
Silent Night 2021 (Christmas special 2021)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e9e6f97b37e14fdf253739374b0f69ca5054e7da884f3cc14da7a8c3bd0d9c. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DGA072199777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b26876551eb2b56af2e566edecaf132f396a9321d2da1b6dfda189f7394df7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR59R2099318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c1f91e9d8701ad1582d4d5861acca66cedf088693a20548c6d3b7ac31721f9. 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/FR59R2099319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c43c70443399b221919bf163f08634c67bda15ae29176adc3c4d55b6626360. 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/DGA082343481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37b8f70a2ce3cbffe0e82856f969ee825f11d027f794522752898ace70fc0b2. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/FR59R2241070.