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 0xaf21ebad4eb959bbc6db2cbabbce82eaf9c48d23e6adcc8b5218fd5cddc8f2b3. 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/44737c52-08d9-4194-9b9f-b083e3cb3cf7.json and https://artists.proofprofile.net/proofs/artist/44737c52-08d9-4194-9b9f-b083e3cb3cf7.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 0x308f1285311fb35579e671ab692a3ae7b05a1ab858739678fb4bc9a1ce518d3b. 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/BXKG22101548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd735e7251b77731c278e4dc95c7f1ba6184bd7516d888bf4b0f4856106514e. 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/BXG6R2300225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67d3a42e293977a1396461237c7a3efce790bfc9d5ccd478b28a079fcfa0460. 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/BKCNO2300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c9f5c0a45c1e247c11681483a4be1096c0e890d124a4aaa785c9dcf41cc185. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BX3SG2400086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea6352617ea824544a1fdce33ced0a041225befe50c9f3065b286d676d8cb05. 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/BX3SG2300191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bbb907b1057111a20b6e17dc61b34c0c020cdc275f19164c3cf86651d1c9908. 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/BC1AQ2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0143fe96df8e5bf034eafadb27594861e8ea40256cdaf6131e81356768041a0. 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/BXSSW2400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52086a0292ff93001ce6493dbc5f662632a0b9fc8037a13b63466c6ed63bb630. 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/BXSSW2400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d68f3c5db1b75f5a65ab7507119de9b4e15e8d1bb94c7ce1dfc486579796dd3. 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/BXSSW2400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6a1ec18f88bee0ca900b06e3f5bbd92eadc25adc1155d9842c96039c9bd11d. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/BXSSW2400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c454f37d7780f82be8b255c418973bcebf68b930354a6e3b6eb17ed01ca743. 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/BXSSW2400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943bd217990f924792e682265feed43ac3c11b53ee8b2372c375d2d45218c926. 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/BKCNO2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9780927bbd980d3447f8f8a77ff4847154feda8045aacf739e975ff38e062dab. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BKCNO2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d5051723933d40cb72f3c367083faa74e915a2b03a97e5ecd780efdb8e5b2d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BKCNO2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20113c95819749b75da7f76717806c82f8f66a8e5c87d960809c33b068103cee. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BKCNO2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d6a72a1152aef13f7c72652602693334cff7e80914e5999e51d5845574efc84. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BKCNO2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ef4306719d821529b34ebdea6f56f66aca2899b2ea31a2e6fb207fdbc77a65. 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/BKCNO2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ac8fcf4f3a8e9a5aa46bc5a742cfc0f02cbb1960321c4ac053973fab2125c3. 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/BKCNO2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc602bbc3ffdd6a3f7df0fe5a7089b2eb6bd7fe6f6e7d0ea8e1f5b1f1671fd1eb. 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/BKCNO2300085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8803348bd77ddab304725e88776eda857308b30d6a787bae5739ec5dac456a4. 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/BKBSS2401307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0410da789ba9c43f9b29716382314b276b1568bacc126cea14302f638e2fc5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZW9M2424455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06215ee226f90179b5fa8445daac62f11c98415f90a2ed55911a944b669bf1e7. 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/QZTPX2421469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc602bbc3ffdd6a3f7df0fe5a7089b2eb6bd7fe6f6e7d0ea8e1f5b1f1671fd1eb. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BKCNO2300085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9780927bbd980d3447f8f8a77ff4847154feda8045aacf739e975ff38e062dab. 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/BKCNO2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f7b765aa76b57bc072d675b9b0382c08111471bfc4e8c9d2518d6e8079d867. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BCSOR2300144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958a7ecd73df78c19f6cc077f36ada5460dd457320b9fe6903f514c3fbe7fe46. 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/BKCNO2300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc820c31d1eb6dc5c6a2d532693d7fa6cf9e1e530345c943b8b4b4a94eb568151. 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/BKCNO2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2503e2508533c3b42d6a703791dd00f270ab465d3c808c34a8910067af23a082. 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/BC1AQ2200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad95d5619198d49a113eb4987674d06d9f1cca0da95d91eb918fd0d14b0940dd. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BKCNO2500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa033bc88c46b34714123259e7d5eb29e598de8f3f0162631c9fe6fc4ac50304d. 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/BKCNO2500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c354f0e1a7ae948dbc73b03d7d857d01cb0bed47dc285a7db94c4c791753f22. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BKCNO2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde0116bfbdedb8219efcc401f4aa80da653c8eef1db53a812c0da6abf6ea28d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BX3SG2300054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafca1f43ce4ba836de8307afff735426954d082397f6ceffc63297c28c999825. 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/BKD6I2400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee9c9bbe99ec24f4ae6bb6dc4b29ecd750cb0660740c728db0673e2a26f0a4a. 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/QZNJV2483147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b8685fe32e9126ddbf689e9c039459cbe3b6041a9a43905bdede36fba2944f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNJV2333335.