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 0xa32ad324041a63b084549246148717b966f9274b253b366f4c1989fc4426a08c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/09459a11-d0cf-4ad4-9379-5c78abe37b0a.json and https://artists.proofprofile.net/proofs/artist/09459a11-d0cf-4ad4-9379-5c78abe37b0a.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 0xe87b22c0d567065d21ba1b14adfef1f41b42f737bf3c10dec60608028f2c3e24. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ES99S1800281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbdb06a8e4ded4c9bd732e09564c5e5da06e9be03b7dcfd2dd53853243f6c203. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ES99S1800283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2251b631a21b17f91699949f47216bcf04a811a68062e3ed5a0caa71c166226a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ES99S1800284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ab6c06b734fc75d9966757140e629a7d277eb50b7703cfa841a214285e2e28. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/ES99S1800285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4e2cb3b10fafb7c2307f07edb445f9ad8235ce81168ee360e1bce0d50accbb. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ES99S1800288.
Elly's New Doll & More Pocoyo HITS, Vol. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea81571b1128dc498f1ce41dfc3e5ecd8c34128b681196fb77decba9dadc99a3. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES99S1800321.
Pato's Bedtime & More Pocoyo HITS, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884f944ddda43fccc1236b926064810b6db06972ed381c8f9660d230a5d65ff8. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/ES99S1800296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a12cc272acf23bcfd7e349b3b653cc7e18f780954b09cd33ffaf8e46f77cb6. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/ES71G1878101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fdd1a803f935d1ab8f12b5aceb88b19d1bd6eccd5f5f85d5c0b61198a8d68c4. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ES71G1878105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531f8d7c5bde64537d13e5052761752ffdeea0e4cef36e302fbd10beb865ed95. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:39:11Z), 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/ES71G1878107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11c84daa7e83a2b8ca9b47d97eee4130b79b06a716b62dd91ee1047a4e37eb1. 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/ES71G1878112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178256d07e5661ad08519e19917c33c80b37aaa37b777783e6f443f9fed0b874. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/ES99S1800112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b7632c04bd7568089bb77092dfc82b84722ec93c8b9909520723dc6dde6ac1. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/ES99S1800113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc37b91262c9332a5e891eaa155154d16583f6bc2a5fb0f48beace058d850b3. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/ES99S1800116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526ab4e85e533882a4aa164380162bc33457b102a58dd7f502783087138ab560. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/ES99S1800119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e4f0d01d427539924f98c899c3e666fbe708058eacf105a2ab3dd0a29bec94. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/ES99S1800120.
Wheels on the Bus & More Nursery Rhymes, Vol. 1
Johny Johny Yes Papa & More Nursery Rhymes (Vol. 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc26e7ed0163c0a53024afbe77d2bd6e9d1473155772238563209fce35c1ef85. 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/ES99S1900332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7898afa9c346df19064f23cadde051bbeab016d1f70d6f3d80bba124b53e78. 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/ES99S1900335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe04862dcbdb648a6ce42ac92692480cc446924a4afbc444a4841b07d3d5cdb4. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/ES99S1900336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed58345c38a8f4b0783396be12ceb91dc14a998c2c115ddd279790f0c09e5f9a. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/ES99S1900339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7c19f81e32d86b343d481d46ddbd9252ea7f46683b33a426393c5b959e7b37. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/ES99S1900340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae673131f6e13f5cdd2c4da1ac88accbdc8c34029aaab060c55c1a488834f3d5. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/ES71G2052627.
The Little Chicks Say & More Pocoyo HITS (Vol. 5)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cdeb638fbbeed0643282edf1127150cf53f4d12068e99e1092db073c3878cf9. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/ES99S2300820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8743b7ff22706de54ac365d8e4462d64f36b4d4cbb936d7376055505ffe0847d. 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/ES71G2051283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75258407dc0a28e334845f306c839228dd47e36d25c1751df983be62f092ccf2. 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/ES99S2300824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7048eab5e601af6c3159a973135a31bd32334b9619695a46ee31051a5fa7fe. 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/ES99S2301183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c36a821814c7395feda07c1854e30eaaf4c27915a1464cb9432fa3e378e65e4. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/ES99S2301195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d441d5a5f0791b97bedf80e239993d0a3aace7d37893e85c73ea0c6eb3bc30. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/ES99S2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd59a09c959f90cb11c7f41cd430655916029d865a39308044eeae0c3c6017ac. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ES99S2500147.