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 0xaa57bb4f2efedc4864f0d46fa81bef6bb85d2cc2baf61e717f31099b95f8fe6e. 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/fa6e1491-4e23-4ab2-bd37-9ace195191dd.json and https://artists.proofprofile.net/proofs/artist/fa6e1491-4e23-4ab2-bd37-9ace195191dd.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 0x7544719c9ee94d84cb8a7d7b6dce4981f5034d06923814dbd286d7c369c77009. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZK6P2248692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e851682e225a3c04596766edc7340d1313a8cfaf2ec9ee24bab1169a5d4a9e. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:45:12Z), 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/QZK6P2248693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30732b8da346bfed2d8fc30c42724b14f746b3ecc4a1a91f4d0337420b3efce7. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZK6P2248694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c96cfe86e26f0dac1e5df9f66cda6d3564c2f64d070959580b1d976d7a6dab1. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZK6P2248695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf12855fe59f49c4d46a3a3c583992b638db692648f4a7be868f8b39e142242. 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/QZK6P2248697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54ff3aa14331c222cbf2304bfcf4db45e2253adc3461f52c46e00f5dc8edaa6. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:31:34Z), 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/QZK6P2248698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72cb1f83cab43e3250f68cb4c84a3aecfd71169390260218bbf1280281d743f. 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/QZK6P2248701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1b664c0080bd3cff82eec26688ae47da1fc93395cafe232d4957265ab768a8. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZTAT2219420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce0181cc0518af2cf7dd4fd0d676297b6a918bd7267bd28800376da41cd7eda. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZDA52426545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca262c5914911699fbc5a873a60f7af2ed952748453a9e7cefc851e56e46114. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZDA52426546.
Let's Go Change The World (Studio Album)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ace24dad5dde34899b11974127be10f130031975f9c1eb96f26d25acb3943e3. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZWFJ2460046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7588124f564d4848b415351c9af5a3427127239adc03458ffb301244da814ef8. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZWFJ2460047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271494463ed35a04709ed4b494a6d303765af56a3cbc0386cb716f9ae37d194b. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZWFJ2460048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05503f10334eec8371e2f78673d389cc3bfc65ab8288eaeb34277a68a83d887. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZWFJ2460049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d9af7f09d5848d4e99fb723257a3def011a4e658022e89be22ff16c74398d6. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZWFJ2460050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46e966bfe3ca2a7cc7872f16cd60fccbff4063480688a5ddc632a5a3024d7d5. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZFZ72554096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261d30eada8c710f8f120796a63dbe1a756b47df67f3671e189ee84566d5a91b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZK6K2598110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9331e5bc67f69e18d0e37a1cf96dd1ef6636de7138a4ea48a1e682f984e74dd. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZK6K2598111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5ea28130772cf71b24e8ab54ff4811f9459d4801c0fd461e4633045f5f1133. 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/QZK6K2598112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0bc2b38c03ee0ab3b4b677617cdec8a3e70546f35cf6ffd1b38f8db6aa5f3c. 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/QZK6K2598113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74c555255cdfdd2daac6b9c809f7a22f6dcf8cb58a3f48b96a2bdf58ccb4187. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZK6K2598114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f1c9c9e3b7efbfb174552fd7c5c2b26682fc9960e32fe7c3c0374f636be8f5. 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/QZK6K2598115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39783817dbec7636f1277f0ea939082c032e08becbfc759e14f83e74060d0950. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/QZK6K2598116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77bcf727388c74df098b979cdbcd0eccf24358ffca04818a078bc63927c1c922. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZK6K2598117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47de5a0226cbcef4b4e80d91288a33f6209b33d38f192a88f7e1f6aecbc51acf. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZK6K2598118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a32c9c260a3f593af66cdf832f0ab5a029e03031f857de17da1c0ac3fb4625. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZK6K2598119.