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 0x414c03e278643392dea715790c3f1cd7ce29f0935912a38ce68db38db95bbf2d. 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/96a059ab-df54-4f12-ad22-66a617bc0960.json and https://artists.proofprofile.net/proofs/artist/96a059ab-df54-4f12-ad22-66a617bc0960.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
More Than Just A Fling - Instrumental Version
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 0x28fd4d5684c89d3bab93f524751e4cfe1bdcca14f29a2a80ef7832d416b4acfb. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/SE5Q51902594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd37ebf985532e6888327f1489dc935dcf68204a578e18283e77fe043979746. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SE5Q51900762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4cb071d154d0d55ffcde9a983b1e4f12d1954643c2a59e1cbf7aa0ad8e5a8af. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/SE5Q51903788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d09a40ab0b89cfb5385c5c9230442875ef49d0d9d9605118cb75a664e9ffa2. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/SE5Q52000450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46dccc046f9f6682b093a30d0f305247ca94579aab045a4679287d3ed131ddb. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/SE5Q52000600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eebf66581d9e9173b4e31e0da6e7334991a71ba2a153a5f7eb58ca22eafb42b. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/SE5Q52001336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6d1db30584f0aa20eed843b80c374f64a31d6547684021e83dea2dc9d1049f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/SE5Q52001567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f12e649d937b8200fc865b198ded367bee7cba3aebc2166b4a2f4b691e24781. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE5Q52001881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1383ac474a261e3993b58e29c15a7c9a895320eb0cd740a707d64d76de7aa0bb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE5Q52001885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbf095475ef58fef880d8ec75f4cc1844fea7c9219f132f75d02783175a13e0. 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/SE5Q52001613.
The Time Is on Our Side - Instrumental Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ff4c88a390faf2f8a2bab93572aaed553ba0aa93ce157aa4b740aee8f1d22d. 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/SE5Q52002273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77fc650db32f314234deff3b3541ad5c28d0ab35fbd2d6b53cd6473bc952fb9a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/SE5Q52003208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69389849271a8106ab743791968e51636a97633330be0ee55215acac56be6797. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE5Q52003342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ef02c52fb238fa371956a1454330042655fdcca89539bf432b4768aa571f01. 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/SE5Q52003204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf93b98a097b6bb7dc7446a7dd3b24b965db2c0b6eeb5dc94229645713f15b1. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), 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/SE5Q52101116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a35d0d33b3c8fb484ce61c21ea41fcf009a24c38d74406225551f026023fc4. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/SE5Q52103016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4efafcdf56eb5a507a791fcfb753fae379e36442423cadaef2fba7a679b681a3. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/SE5Q52102329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b63b5328680928e53847798d795f508bf91aa07b41d242bee308ee8fb6bc64. 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/SE5Q52104128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76c575c1afe08cdeb7696ead7b3531893e4836a478338f333c52874ffbffbc1. 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/SE5Q52103574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde91da22d3a3a1ca90abd4799585646fc0a56e48410fe85e056b4065a73d90f2. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/SE5Q52201700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35457ad6861231bb8ad1ee6ba5677cf2cdbee249651d25b8a353ec894fdc5822. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/SE5Q52201600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6a00b2d36a22865f999919f80e5a2e984ad7567c33865107be88d724d8cfe2. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/SE5Q52203721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079977ebcdf55461d93c1851f3d5c5a0a1b9d9a7cc883cd6930833cd6f546cfc. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/SE5Q52203635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef306a550a672feeec4399e97f26f557ab5578f843ee65d7a54c00b469d9c74. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-21T22:56:27Z), 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/SE5Q52301452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64cbaea4ae7cd83ec66198ecb28dafe894d98dc149d3450b7b6f1145f3dba13. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/SE5Q52303369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5fda03384dd33adccb322e4f29b5b9ebdf6d126a22f8f53fa377bdd56c8c786. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/SE5Q52303105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647b96d9875816b28341512d1bc260bee4ea13e1a34c5d6bb0b6e2ff08dd54ed. 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/SE5Q52303044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0fbad9795fa78f70d326ec62f02406c8067c06cfcc436b1428e06a3d5fd9766. 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/SE5Q52401408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x929f65879ff051764ff193901316bf5a104c0bc61265659e7e563e0875162291. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/SE5Q52400973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876e4401496368ea43d1244c42ce9499d06f4045f3f7af4d59bbf214cfb5ba8f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/SE5Q52402049.
Epidemic Presents: Crates (Vega Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc533165c49a60974a7d3ec0b0f646c573df6ac71b9b7c18ef2e4a019778068ee. 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/SE5Q51900211.
When I Get You Back - Instrumental Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3327a6ad204b943ada4a1038b9bd7aec9c3324926b0c04b1a2a591e429c6bea8. 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/SE5Q51901059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1606fcbc8c3ad7e0f7a14a9dee757b274dbbeca1cb776ee79eda0f45f0e59354. 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/SE5Q51901001.
Free This Feeling - Instrumental Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb119b265371076b1da33587ef95547997989b6df41b2ed375ce608a8422fff. 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/SE5Q51901146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeaadc7c3416a6496cdec962a211c79be5c6e17ee46bb0ddde81b70f76f9a4bb. 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/SE5Q51901075.