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 0x48233a1d62d0d91a6c598967f7f5ddd4f201b135915e6172e818b6859c1491e1. 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/acd578ad-4cfb-4b7f-bc88-1401ad9d25eb.json and https://artists.proofprofile.net/proofs/artist/acd578ad-4cfb-4b7f-bc88-1401ad9d25eb.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 0x546ffb739aeeb6c717e0ce3de837cb00470abaf5de72b350e67bf5cc225fa1fa. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/PLI360793690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7447b58d806fccb8d9c4ed8c9ae5d6c29314e4d465bed82c553b89aa24d5fc86. Chain 2 (Bitcoin): anchored in block 957629 (2026-07-11T23:44:46Z), 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/PLI360793700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f248e2fb04b8fc71484c8cea0798c51d1df0e77318391975baecf44f55baa6. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/PLI360793730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff36e20988cc38a3ed433165f21f2a43ee7310801087539cfa1adc5c984de138. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/PLI360793770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc9e3a569992fbac2b0363cf54f185a410e769f6efcf6eaff64b2cdf3d7e529. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/PLI360793810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8639521ad308e314ba43c72d4d20966940f7e16f5159ddf7d47c97e8ccae1933. 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/PLI369246160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaebe3ef7d240aa0d3084bec807a6b8aceefa49092c25a564e2c0ed93284e8424. 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/PLI369246200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261bb579c394bb7183bbb8e5ffb37f8ff31c6e4b3b7a5a1eea475881d4a6edde. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/PLI369246080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc3f877f970658a7f16cc7c3e957eb892e90bbfd6c9a78c503f73b2f810b332. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/PLI369246090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa91ef47551915bc15c6e7dcb3181a3a0a59bf0cb75fdfdac6991a2c51391fc2. 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/PLI369246130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73d4e04a6f1ec9f4994e8cd05ac13221a330fe85e72abd6247848bc44727d7d. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:36:50Z), 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/PLI369246150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aabd0c6babd93eddf344845a0cf4d7216744a7cb6f0ea5e176a25367ce208b3. 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/PLG791400112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035d7184ca0baea19898a49514602f3ee36685be8ec44d2e75b9094466c31e9f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:33:41Z), 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/PLC691600037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259886070a4c7fe91d38a1ddbb8874cb27a7ac3d62d330a531240360f9199695. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/PL22V2484021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfabb280d0279ec72dc3796aee968f4af69b397a94b6b63a8f25020357d3d9e2. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:44:49Z), 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/PL22V2484036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259886070a4c7fe91d38a1ddbb8874cb27a7ac3d62d330a531240360f9199695. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/PL22V2484021.
Insomnia Selection, Vol. 1 (Discoacropoli d'Italia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a25a63b0cf432dfc1e6d17ceee30bf7b8b2bae7b932c7ec5ea0c2384b2f1fec. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:00:59Z), 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/ITC151500090.