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 0x93dcbd2f1019bb28df83fd4580f04e1e817ddac96f1d48274ba20781663d89a5. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/579dc8fb-6311-43ca-9605-ee7fe30bbd52.json and https://artists.proofprofile.net/proofs/artist/579dc8fb-6311-43ca-9605-ee7fe30bbd52.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 0x6ba07f6ebb428a7c45867841d1b349dec347f91af22b5124280e17f80d2d8310. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/BXWGD2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4de0a9a41614b114b70bf7749cea2498bed52e306f2448bfdf50c94988cf15a. 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/BXWGD2100003.
Dubalizer Apresenta: Tribo de Jah In Dub, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc55c669c4fbdd439a25785a63288965650e0e2262017bb603ea4b698dcce0f. 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/BXWGD2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bae27a483e6d8e5ebba05992a80b2f67c1ef240f292e463fec271d86c279cda. 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/BXWGD2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1ec145f270c5827d8a1b20edd0121574500d57911c7d2e3bd4b2908e2af9e7. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/BXWGD2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7180705056d28afc6eb0e8674a67257053ee52b7e26385883adb89bd736f38b. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/BXWGD2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae8163f6dcdfc2694823b3b269478bbd7cd3c34d2e7c70e1cf368fe087e47fd. 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/BXWGD2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57be36faa45f7229ab88f8200aacfae132cc70f8551a448cb89de12a08220a5. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/BXWGD2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0d82b5dbb6ed41ff3d891470a3099d25991b459261f48a660c1119199c838d. 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/BXWGD2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8b3174db28c7c7ddc1c84585027d76f3c36f1e0f51986716b21648c2560f55. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BXWGD2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96e6068e31140c413a5fd8235fd1217e92b289a0e2e5db2c5fe8e18abe6bebe. 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/BXWGD2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc40202eacc1955a3eaab1177d21c9243df83d894f03f70a3256277a2a07645. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/BXWGD2000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087c86e66e771877c2d43caa30081f4b5e20b750e088a629b6ba2c5f667b17f3. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/BXWGD2000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3295485ad5c8ef4bdf331f00853d00e20f6e90217b80859fff564a7dbc182de5. 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/BXWGD2000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2021009675f78d6deaf4003ba6fa9b2a68803ae705c4318c4ef36d48db8f2b. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/BXWGD1800029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3ff5b16dd41a20355d08745c7e609e6b2e7126e4dc66c1177592afac7e0a3c. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/BXWGD1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9dba48ca6a5e3e09b6ac49d103da822c4e2e71cd1b6e3aba6cca33a81ade64. 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/BXWGD1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b12d91aa9471d61a43eb9b8431d67c2f6e3ddb599cab47d64e061e2864c319a. 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/BXWGD1800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8ef86d621a47237f809ab3224605f8c121d4f0339d2491ab4da0f8a3439563. 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/BXWGD2100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ea3521edb5873433d245e2f1d6e9d602dfe550787fd0dd7d5204953431f6f1. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/BXWGD2000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64baf13a7eb5aa17479b53abaa053c54605498e4e14ab3c123dd7ec7e4ce2ab. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/BXWGD1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee57da203b30e429c7a8bdc853d447bf5a3f2a9d89e19b83c87771cb07e77381. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/BRHGT1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9325eda145aec23b8cda9ff170b415a81300d79161dd7d3b8f1e5d14d6f2b2. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QZ5FN2218318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf339df18611d2a82c6fef9495a28237c77ac13ac467c290cf232dc005f1bf4ca. 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/GBWUL1807027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35de739be8bc1357ee27a4243a4ccb9d60479b29c5b52b6559c9fcd54e88edf7. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBWUL1807043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5914c1f5c13e12e948be588cbd6d5f20f89843b55cf5bf2f9967c0b83d2c92be. 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/BXWGD1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b0dbff9c52f1dfee78d66aebab8860505d289aef133eb68f4b04f4d1c08366. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BXWGD1600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb2d2d0aabae2cfd7cafad7f039b0288120a87fa7bef31187abbe2924df7cad. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/BXWGD1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2479da91d2916cc05abf0d4565cb3ed1787141e79012176e9203bcaa075b77. 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/BXWGD1600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a91d7869e64afc02ff196fd0d6821d3785cc5d8e3d914ecfb58a37b9b54064a. 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/GX3HH2134999.