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 0xb64f66237cec6b69f445f56f505a395b1f5fe39f4ab84b6bf1ffc646bae504f1. 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/37ad95a7-4bbe-49e4-a674-7c2e4b8aab3d.json and https://artists.proofprofile.net/proofs/artist/37ad95a7-4bbe-49e4-a674-7c2e4b8aab3d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
To Be Young (Is To Be Sad, Is To Be High)
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 0xc8d7cc21ea9466a19ffea978f2e1462c1e0439293ff2b4a9a20b735bc413a70c. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/US2AR0990802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9184570bd9fe3a55f2ab9246001b1935d89e6a255c643ec947e8f808cb0cfc. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/US2AR0990803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57c1320ea857ce4649fd38632d099725cc03c0a3b06b56c33abd65ebc25a055. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/US2AR0990804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d64a3cea4c8b7229e90f7cfa4134e6163599501a78dcf42731dc9710e4e4e0. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/US2AR0990805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a12a6b7bfd5b3be65a405bdaea33935efc569f2d0f9dd0cb3881f340a29a8e8. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/US2AR0990806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16fee2d8713a5cb689525950d245c3bf7a9536be7a806befe4f6fc6d6ea07819. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/US2AR0990808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57c1320ea857ce4649fd38632d099725cc03c0a3b06b56c33abd65ebc25a055. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/US2AR0990804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a12a6b7bfd5b3be65a405bdaea33935efc569f2d0f9dd0cb3881f340a29a8e8. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/US2AR0990806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda647270cf3d170f1a1c6416e507a238bfc0aea5871a5b195b4933e0c210a38. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/US2AR0990807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda647270cf3d170f1a1c6416e507a238bfc0aea5871a5b195b4933e0c210a38. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/US2AR0990807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfecc92824a9e7964c3150ec59ed58eecb2fcd01dce5a83af70c8ff98f918179d. 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/US2AR1551203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf913e80b138e5deb92bf4e23c2ff2f1fe7e831dfe8d70758e8463858e33bfe. 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/US2AR1551204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1354a6f74fe0d86e29dcee45e9c37e7f0082090088198fc0c7e03023f743b7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US2AR1551205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62cc8a63123ad5cced73348eff2cb3196db37db3b10622d139e195e32c51ad1. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/US2AR1551206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0bf796113a8c4d4a87a27b0dfabcaab5528fee423d92bad1305013ce32703d. 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/US2AR1551207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfecc92824a9e7964c3150ec59ed58eecb2fcd01dce5a83af70c8ff98f918179d. 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/US2AR1551203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf913e80b138e5deb92bf4e23c2ff2f1fe7e831dfe8d70758e8463858e33bfe. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/US2AR1551204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62cc8a63123ad5cced73348eff2cb3196db37db3b10622d139e195e32c51ad1. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/US2AR1551206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfecc92824a9e7964c3150ec59ed58eecb2fcd01dce5a83af70c8ff98f918179d. 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/US2AR1551203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf913e80b138e5deb92bf4e23c2ff2f1fe7e831dfe8d70758e8463858e33bfe. 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/US2AR1551204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62cc8a63123ad5cced73348eff2cb3196db37db3b10622d139e195e32c51ad1. 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/US2AR1551206.