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 0x829ba03156638ffdcd2c2b19ba4bca463cd8b5a494c4d1c5cdfb2f7afc509d5d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c8b25730-64b9-4b2c-8c0f-9c7875f17794.json and https://artists.proofprofile.net/proofs/artist/c8b25730-64b9-4b2c-8c0f-9c7875f17794.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 0xf1a40b1d2ba7166c7c51af5a33c9f4440f56317eb7e4587ed2e405e705427cf8. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:09:46Z), 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/USA2S0118001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721e560852df229ed767b345a901968e74194130a0cece0f44071cf5ef32b474. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USA2S0118002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d77d17d2dc7238ae72cdc3db4fe853d72a2eabee0fe5e9e4692df13a2ec2de9. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USA2S0118003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae102ae3ed94b854dcfe5ffacac3c321d582f9fcb93c3539de7eda2ebb47ef7. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/USA2S0118006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a02332be4bebbb5ee6b53e5c2d766b469fac12a83982ed0c0ddf21be23680ad. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/USA2S0118007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0055ccee19ae3a0ebce4278353780a3364c04498b21a24efb0739478e53f5c21. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USA2S0118008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c918033973b241f6196481e31e5e5fe4df4ce23735abd2923ba92a3057715d0. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/USA2S0118009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe840436794f12f570378a38e1421523f083eab862c459692b92af9497d0e2a4. 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/USA2S0118011.
Celtic Christmas (Silver Anniversary Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db13cbe9fe574dd9d8bb8a424a470271235ec901983f8120c684960bf570ebe. 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/USWH10100121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658cebc57d927024d8c047da749e7c465ad7e49a65ae0097931ccb46d16a9a04. 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/USAKS0500948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0990549abaa65c9ba50f395d55d2de73cf364c19f2377a038867023f9162259. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USWH19902168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d989eb4476c22c29da4a8e1badbc8e256d8f6269e28f1ecaa5f4dc19f534d5. 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/USWH19701178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03c1ea777bba878c66210cb33353beac03622672ffa76820727ba67810e295b. 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/USWH10300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510ea661a0b0fe6b8996900abf1feb44f2d1d2cf8c1e6061b46075e5bee3077c. 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/USA2S1622203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30fe39f396fb38db46f0f501cc235326aba1ae1eacd15f2ca7f6dd98b2313868. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/USAKS0500934.
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 0x471e93da14f6accc02db089abec22639b9caa63d7a56c3a472144f25782fd3ac. 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/USWH10300085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f52a2b6feccaced93aa0605afd43b0c38e3aea9f78acb37e6ae03c4dbc3e41b. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USA2S2223301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf990c0ec76eddab27d1406629a7a9dff87771d56bd6bbd12ebec34dd63172a5. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/USA2S0818902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10bdebde248ea86c30cea46b2f7ff6f00eb3aa4b57806beb1ee7ee41be320a70. 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/USA2S1722501.