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 0x5d7cfdec4a5866177016a10beef004d8799aa0acd2b9d630db045691a436ecec. 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/43e4443f-cebd-4af2-8cfd-0af1c75931ea.json and https://artists.proofprofile.net/proofs/artist/43e4443f-cebd-4af2-8cfd-0af1c75931ea.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 0xd9889c731c0d01f52ed30d7b66a20a4912d685f7fcc385fd8018473d11f80c3c. 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/TCAEH1952565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967a4014dd464549c2676345476359b23b3b652abcbefb2fe6e21bd1a483835b. 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/QZDA62360669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce0068959c2471ef3ec010bd74104ecd4bf749895608a6ba03184203ed2d5e6. 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/CA5KR2249076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95dbf95314d14c83956271c5bd7a4f7053697bed66e66a5115982e372f4fe659. 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/QM24S2202124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d34c5f486b6105474bdf8cd6ffe8d13c74023555b253ed1a3f55a80d6cff3e8. 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/QZKDK2293960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c117f95d92a66ed038ea58ab396c3eb5401f5d3fc4cc4855845836a83fc1e05. 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/GX4R52258890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f33d88936ad9f274abde809bcf4be252e48bde9f17b63fa926dc85afbf4ebf. 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/GX3HH2227897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ddae3fa0805305858e1883b10f2b4100fe6492c0fb815bee205a864ab408171. 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/GX3HH2227899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc5e66c55a1d002c9ea2550c88596af1a457e1904ab8e248ba8766bd4260d13. 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/QZS632147877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32803c15b1c53c1010123aa304054c63a5e803de3a80d0cc199bd7bae7bec46. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAFW2193002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53eff1a89bc4e168134014de26776c1f3f7404244a8b4c0aafe1f8855c62c3f. 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/TCAFW2128977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f2d88a93ee459781e2b65718a92f4853e2e236295814a588a3dcd170473f13. 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/TCAFU2181876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb056f728ac60d799fab496e7e94f4499fe067ff9efbbad17e483e2f1897a6d. 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/QZMHN2097846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8f10549a729def4ac55409bdca93767561470b44513552d25841ff0a8d999a. 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/CA5KR2271227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9eb66f3233c3e325131f48b8ba51f1532de13eb1db99f162490d332a0bce52e. 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/GB2LD2110157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabad99030e2ba06dabc65d40b868f32c5407df556aeb3205b2a9a75fa4379894. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCAFK2153746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f922fadc176af4b7860354abf928efecaf3b2e867128c99254bb0678174007. 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/QM42K2123225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9126124b6959477a1fa376cc1b738591a4a9c5de8874aa6a84bb11513f6b0779. 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/TCAFG2062926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455acea9bcde79b5d3da9362aee9a15d5174c893a0602f7eaa505e3083e0bbb3. 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/QZMHK2063147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd912bef1b1407d83471a863a0523f511c6b2b1407af2bf2b30b750c2bdc21a2c. 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/US3DF2001566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff503f211d6b6811033cf57636ebe3f5bd9a96a9ce4cb54136f0ff4f51a0362. 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/TCAFC2006463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b886ac0a1993a8e3b7ef6d4ae458de00af544141bd62a977eda488cdb7fc7f. 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/TCAFC2006468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ab7537bf971d21a3bbf1805a5eb2f71f378cbea8aa6209b972eccd22133c86. 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/QZKDK2080130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba56bca4782d9f46f555e0005924d44fd0605059d038ed4e1a4e5b101ebb1568. 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/QZKDK2019885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31fe712fb6b9a26893cb488e23a1b71f8ba2875b163f8eaacc7824ba85788ef2. 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/TCAEW2007703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0ab5b9362fd82cdfcc06be9f5166ce49c8d62d08a7567562143444e5a60999. 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/QM42K2037879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c8cb3bdc1c4a908f5ba0caf133076560449b514966978662784c4d6cc273fa. 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/GBKPL2090394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1df8e2eb846758cc32ef9bb6cd86998e7f5a279189c463b94c960a16f51160. 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/TCAEM1952961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eccf2d7f68f50a6e2b2cbf8f7321fa9dc5c4b53b4d2e538d657addb5980027d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBKPL1950330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb982aedd96cb5c78b8ddb24d4a6116cd5fcaa3b84e83f6233ed58b9021fba2dc. 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/QM24S1901655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce14474e13593b44e4dd3116bf9b40825863a5eb9f8e7b3a380c46c3f41e266. 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/TCADP1883394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906e303374021c8a9c8d0c1dd5cdba1879068ffb3f73dcf1d2792b03e0b262be. 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/QM42K1897083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee36fa74e7679bcf641da2028fed8d2382137d4ac149ecd1a582e54f16824fe8. 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/TCADI1788361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce0068959c2471ef3ec010bd74104ecd4bf749895608a6ba03184203ed2d5e6. 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/CA5KR2249076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd912bef1b1407d83471a863a0523f511c6b2b1407af2bf2b30b750c2bdc21a2c. 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/US3DF2001566.