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 0xf7c1743ae66efff9ae0b5e8eb170559b93438a62e86513a5b3f5a57d5c8ebdc4. 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/59e37a63-f371-4512-b1b8-f8d575ab1d5a.json and https://artists.proofprofile.net/proofs/artist/59e37a63-f371-4512-b1b8-f8d575ab1d5a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A Journey of the Heart (Orchestra & Choir)
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 0x6fb80caf8f41d984eb099eb963079e099966a5773f17a5402bfcce9799cd5359. 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/USHM21912966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76c687c9874261b8f288c3571b1c8ffed43c3d9268f0bf1849c482bf22803c3. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/USCGH2011672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026df93c6e45a91e841280c8bce18bc19e43ba71868330e19f54477ccd1ba76a. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/USCGJ2020083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7d069bca34b06cb8e91d2530b1187c25613a09a5ae1576b78fa10f5bfe1528. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USHM22047601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0ac4a1c6d3f6755e17e30dc83591be304f20458b85ce315d178201912bb39c. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/NL3VS2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477d3ed03a3bbb3005c300b23b2e16765536b921ac68ea3f80e6e82c5dda57c1. 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/USL4Q1969938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f77cf50b428e654446cd7c400c410e9c90184f7c3c3307366ebccc99777c4d. 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/USDY42074530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0949558759de64bb27d83447b554d4740a641410ed097eb9221673b75c598dff. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/NL3VS2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a813da7625bb1c2f2aa5e0c52653d975638552f47d03f2c35c814052e45e6ba. 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/NL3VS2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6171bc2fbbe0ebe53da6a147e43d833e255eeb959991380c3fc209af3f7f0ae3. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/NL3VS2000004.
La Flecha y Mi Corazon (Kizomba Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec8ab080a260f62807e6610532cb8711fdb32263ff1d85f1a817bf1385d1fdd. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/NL3VS2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120167292fdba25519743886da6c5ba6b85862791a962ccc2bc1c4359612e81d. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/NL3VS2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe414b524068539be57ceb427726d478ed79f41f23fd4cdc8a965c61a6a93277e. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/NL3VS2100004.
La Flecha y Mi Corazon - Kizomba Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0702d70f1909f95f8590fc7d69c20a24f77c2549c857bfeb290a61c39623b8. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/NL3VS2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33a3db0a7af986a86bc675a0b34e266bec736369ae8e89b86ae322f0fd7cdff. 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/QZHN72425345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95252d12ca72565ccfb99fd8183c59f989f0a2fa1c90c2007408efcb2e9cc875. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZZ7V2544312.