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 0x0cd4a2f5f842a97e2facee3fb1ce86ef26d57fc514266a0a745124a417c460e5. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0f66185e-9859-4865-8c1a-1ce43027c07b.json and https://artists.proofprofile.net/proofs/artist/0f66185e-9859-4865-8c1a-1ce43027c07b.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 0x0de1de22d049746625e68545ea05ffd81fd99efd68514a135aefa703037583d1. 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/DEB331234004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1c60e3e2db56e19d08b7442a86348864adb37f05b0f939b0e698ae21bb6d3f. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/DEB331234001.
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 0x9b789f2a3ef81d500cee709f7202f84010145bcf6d96c9254220096205a01f52. 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/DEB331234002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48cc6ef9baaf0676e82d6631a018a1db5e4281b6045dbf12cb7ebe461b376be. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/DEB331234003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999feb5b50252bf54fd69e4e9fac486bde576adb136d9a099508f0e023c8797c. 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/DEB331234005.
Jazz Festival, Vol. 2 (The Most Beautiful Jazz Essentials for a Chillin' Summer Night)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8311a623749e1ce255625a704dc78436a319c988b8de5fd5c51fa4b3c640359. 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/DEB330912006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefea1d15233b326bd3991b9b30983f83fe6199fe250a93d47cd25be69812c9ba. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEB331860902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f72c469f1583066bf21805e14f010d29b0a98abe01bd2fbb7bffff9f3106cdf. 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/DEB331860905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb34ec1e791a80ccd43c9db6d87116c9e5099f919e67aee278d02db292de38f. 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/DEB331860910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7603d4b960675140bfe13169686965707b3c48b25c807ed0f643be4a60de592c. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEB331860901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e7c57b210136224de416eb125376b1c0e73f9a4235e15ddb25939d5a69d572. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/DEB331860903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb27daa4b01effd731368e712ebc79377b27573235bfe41b2177158974f3bb7. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/DEB331860904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe988060e82f93172ee420195509a5facbf372ac4cc9c2ce54e5c4663d8484f. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DEB331860906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75be78266c4e498d96641474e13952019326a91e25ab8ad028a41377b67b341. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DEB331860907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b19aa857fec1046cfadd9d5c43e3b77eb7505c3cfdae3f58c0297762ffdc38. 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/DEB331860908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713d214122c5a035bbe6b59f48ae7f93118e5251bc69e9afb5913421eda00054. 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/DEB331860909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1ceea1ddcc27cefe73702533c5fda26542df0295f6197ea10e87bfc40aed34. 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/US29B1358642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9862a6e697eaac2d1dd933293055e2c32a5b760a391ca69b1166f30554b4da6a. 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/US29B1358631.
Anything Your Little Heart Says (feat. Stefano Battaglia, Giovanni Maier, Michele Rabbia)