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 0xaf8ce88b12e189c8c5db1eca4f5ff5eb7d6449a5310bae7ee7e444b68aef084d. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9f2ed10f-613b-4aa0-af27-e04432a1b118.json and https://artists.proofprofile.net/proofs/artist/9f2ed10f-613b-4aa0-af27-e04432a1b118.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 0x6ecb1a736300fa6c7d37b68074050cdbce12b5f2390d07f74b448608fe2243d2. 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/USPR36170177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067e264702480602f6df1a0058109c51c154c124ee2af0ca8b5932cd8f6b03e0. 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/USGR10200700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc838bbb5a96180a44448cacff3d2417475b8cb6cd8a13739b749b8fdd5478de1. 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/USGR10200713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898d24c557d0b3e9de9f16c0e2707609902f22c2cae21ddd9f7b8f889948b758. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/USGR10200715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326066459754b37eded4398d7a9e73a661942fbfdd4e6b977cf208a2bbb44005. 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/USGR10200714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31436fee60001c0e2f36d4555ea989011fd09e13471e07dc90a92e1596568a92. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/USFI88800229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c49211b550a25432f1b6ab1f81bfbdfa7e286791f9785fba492fe609e01229. 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/USFI88800230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcaff3c7aed517ce85b53403a211957ffc899b6494d79bd9cb01248130c51519. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/USFI88800232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dcfa7be96dd5a103f14de1182c3c0ac7aa5b284ecabb89fb22bd3652369687a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USFI88800234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb919d9f761105e8892bb3011bf1fa90b85f91230fa0bc9ec43bd67128da5136. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USFI88800235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2038a26669b184c5161ec0400490aca05b7d1913cc6badc9ae420c1b6540c474. 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/USFI88800239.
The Dream Band, Vol. 5: The Big Cat (Live At The Summit, Hollwood, CA / January, 1961)
Tico Tico - Live At The Summit, Hollwood, CA / January, 1961
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8d56c7b3fb97c90072d3e3d4cf829d4f28b230fb84e501de57f7862498d574. 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/USGR10200718.
Big Bad Bob - Live At The Summit, Hollwood, CA / January, 1961
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ccb6666ad6350c55aeb71d9bebb95770da69881c9a4153cd55e8ddb9679eee. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/USGR10200719.
The Big Cat - Live At The Summit, Hollwood, CA / January, 1961
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d1a41c38b6bb55e1d5835b0c41f590c149c296be52e04ee532cdb19c818501. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/USGR10200717.
Soft Eyes - Live At The Summit, Hollwood, CA / January, 1961
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2cc5727deb018732adad236b277100f35a75878c11fa6f38903ffcef8638b2. 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/USGR10200720.
Billie's Bounce - Live At The Summit, Hollwood, CA / January, 1961
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b1d70de85ce631e2db15911266941e38ea2a9080aafa11313db39d1c00d24a. 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/USGR10200721.
Pretty Blue Eyes - Live At The Summit, Hollwood, CA / January, 1961
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a0852ef58415e7de4fe46d2b5d6897c13993100f394c1495c3bdcce5ff644c. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/USGR10200722.
I'll Take Romance - Live At The Summit, Hollwood, CA / January, 1961
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b8ab63b2cc5a3a9e2538935c71c446de427b8fbdccaec626a7e667a7c9a3d4. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USGR10200723.
Do You Wanna Jump, Children? - Live At The Summit, Hollwood, CA / January, 1961
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5ea5d94101940875aa1ba31a6241b17d547de12e7e14576a57dca4dc79f247. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USGR10200724.
Nature Boy - Live At The Summit, Hollwood, CA / January, 1961
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401ae4f6c83b268f3dbcae23c36947a919cf97a5fa0664d13b2bb8605fa96974. 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/USGR10200725.
Jump The Blues Away - Live At The Summit, Hollwood, CA / January, 1961
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3077a05369b5ea48705ed62fc45990b7c60475a9cbc099964afe731e578112fd. 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/USGR10200726.
Sleep - Live At The Summit, Hollwood, CA / January, 1961
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8b9204b4600afa79645f6b3fae7dd4c7f8dc2df2ba0dc829ba60fa5f77ea89. 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/USGR10200727.
One More Time, Vol. 6 (Live At The Seville and Sundown, Hollywood, CA / March And November, 1959)