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 0x2cf8c6df0ca5defb0c5feb791488bf4d887aa53468168659151f1f9c18781311. 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/5413f263-bda1-4603-9ea8-8e207d7644a5.json and https://artists.proofprofile.net/proofs/artist/5413f263-bda1-4603-9ea8-8e207d7644a5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Yesterday, Once More: 16 Easy Listening Melodies
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 0x5a6b4fadeecc2a6727197ddb2e680127fb08b609583d93da8e8a9d8925bd0acc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HKI199190705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2482df041eff03e20ceb9962687668af5437b6dd538a4da23ee6f34e2e48088c. 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/HKI199190707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241a18d12bf64cce4879090866c30351a693d43cccfbabf3ea5bc8fa9b20f4ab. 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/HKI199190709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09e58b419a72ffb1775ec07e3019a3ec0fa877bc077905150adf0aac2cf1651. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HKI199190713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7be579ec5e9fc81de012715dd16b850bc7af6c14496cca5f2f0fe12298c09bd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HKI199190715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90049781d3f4997ba4185472bb46fdccc68a2b13a576c92213ddff7310762de6. 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/HKI199190716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e06e45d7f1160af25a90e2d81c6534ab6e83d30215064d5e1c76f4a53dee9a9. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/HKI199190701.
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 0x1b8d867c3706075f811fc3ab047e600d7ddc5088bf804138d5ce4111220269ed. 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/HKI199190702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16cb4a5dee164aedf1d57ee019fb6a9f5f5dd8f4eb3d114f43e8367d9ecaf8b6. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/HKI199190703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c5cc7ad7a2602ca86afce81d1c0dc66c775403452e8fb7e31d2917e5724776. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/HKI199190704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fed8654a44b52df032c046fc1df68c085b4d520a71f84da0e43640dd47bd881. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/HKI199190706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0b735acc6a604f7559415bae806f2733a3c5994144dd95a6d8251fd3dec221. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/HKI199190708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e227cfca93d517ca626152cb48f30b1ba9977a508acfa101e8392fadb3526d. 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/HKI199190710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc98bc9ef7973e64ba3d603eef174e865c7e720846735fb81e55bd0a12d74b53. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/HKI199190711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ea12c016309c8e165fa50cf22bac5eaaedf3a4215757d20011a1b95cc26700. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/HKI199190712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758a099ada59f007dbdef9d39df968a99a04fce61a81388206cfbd1dcb62935c. 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/HKI199190714.
Always on My Mind: 16 Easy-Listening Melodies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8506b24c82211ffd9c01ab3018bc1955b8e2d89a9acb5742e27a5cdc470ead45. 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/HKI199194301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857c60fc6b13bf0cac8eff59ab53fd1fc6f657f76c52a5029f591782be1ccf3f. 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/HKI199194303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb325b9119566d5404565b447b8f156055ae9a63298026cd6fcefa0fcb6a39322. 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/HKI199194304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed8cc6d9b59ed9b1afb525ba078d2053ec637d25a85c5bbaa24b0581f4ed573. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HKI199194306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c83f9e4e9c2ebf406acb2367dcd47f925246fdb3851b41fe68fae64ec59c39d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HKI199194309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925f788426d9432b86b088a5542bb4bac1c09cee90d4ec6cfacb2cb22fda2604. 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/HKI199194311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e1796cbaf8f00cebaed39d798be22447bb094ef82a8989fcbb1865b7d195ad. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HKI199194313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86b0d056c150a02ce4ea48bc7e3b318ab8da88b2f96a3bd47306139efb63ea4. 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/HKI199194315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1edc37b9c90c8a22314cad617eba1c68e8c8d2635f86efc7457f848acdec361. 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/HKI199194302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8c8174009e12d834ee87b6005319fb064c2b8cc8fb775f6229308f480e3608. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/HKI199194305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50bdbe2ab820d5f7e2a1c21388689d80174b3c5777ed236fc9323931565c504d. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/HKI199194307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429c6be227b33204f9cf97b3475552c858906b4e2574ff24dbf8ce971baf3e01. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/HKI199194308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc269d36db31adf1421f48c15e3caef5a26452e84f5531037422a4306d0fbde09. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/HKI199194310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa221c738d9b7f1c504821e764b95e26804a02b2307f78cd955f6806c83ba5f29. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/HKI199194312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42928407406e9851851a36d51575383dca6bdc482768d3b17e77e748452655a7. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/HKI199194314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb910e43767af3d74595f5c3e8ea49b3202946caea53b89ad6c4f5098e6cd310d. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/HKI199194316.