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 0x575cdee68a65f276828e32d51b040a479bba7188ad97308eeda8482b86f44f71. 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/58fcfe91-a9f3-4986-b98a-659cf0160c36.json and https://artists.proofprofile.net/proofs/artist/58fcfe91-a9f3-4986-b98a-659cf0160c36.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 0xbd298c45466638f58b8aef00ef9a5c8497d78dc4dbb342fd36052e055f3cb947. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/US38Y1628101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25cd0220e20a0da92cb26cc558f2e891a9433cbd4f6b3196ae39641c9e951f19. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/US38Y1628102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41211905c48d6cec6b027577ba250865343813f276e02242da234471c7b4eb38. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/US38Y1628104.
Judas Said to be a Man b/w Endless Shame
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee6872a1f9942dbc3a1a16e6531dd58025835883d408e6c1f913b6d463a0918. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QM99V1606701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07ab59c051da9d4b040ac8376a6d33f779c272090f6ba0feb6e5551f7eee4a3. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/US38Y1628201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7db755efb1e925028541aa1d694626fa7d9a71041fa6c001a6f797f451ceb9. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/US38Y1728304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6238ebc881faf7a56c124dd06dba43303349780936d9c841d8bcb0fa1c63dbc. 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/QZES52146596.
Twilight of Idols / Madison Square Garden
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4c13336d9e1eeabff2764611a376c6bbe2b7ba4e0b2b2ebec2cf3a70a5916b. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZNWY2139628.
In a Cadillac Hearse / How to Find Love in a Place Like This
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa087d589ddbfe2fe177b53893752d6196ea55ddcc9de340a677ace3888c14e0a. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZHN92552850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2320d09e831c6f453060ac188e1830dcaffbf1bfe1a1dfcf14b58b9b0b4ad0. 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/QZK6K2538682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5a421bbcb584e69afcbfe8eec65782da6334bf05dc3730378a676ab2753c1d. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZHNB2564976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc44cae7425a1ba2b33cb9bc37af3af72ea428b7dd3ead89f863a19a7e26791. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/QZK6F2572288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa087d589ddbfe2fe177b53893752d6196ea55ddcc9de340a677ace3888c14e0a. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/QZHN92552850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96bb0a0cf19afc877fc969cc30a36b304abbc7b9a875384ce5d5ad6d145490c1. 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/QZK6F2572289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903cbfdd8afe63c319d7c0449c14dd97818820854989172cc24a774201c6ffbd. 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/QZK6F2572291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61224b1d643b0ba4e5eaa729d9ea239769317814e1432ed1541f0dbb0598c6b. 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/QZK6F2572292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0bacda901009aa3283b5e8bf7d0460d70ff5e23c9e7b16147a296fbfd8d8ff. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZK6F2572293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe64e3cc786c2c1beb515a161f7b5680aa54d4e0f0c2173ad333029c14f890c. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZK6F2572294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5eb4dd28ee9ede4df962eaacc56f1c081db4e26245bdb70a61166dc4893c3b9. 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/QZK6F2572295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55635c5f078fbe81e0dfac93a35cdc2684ca194a592988599b2753bb2abcc54. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZK6F2572296.