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 0xfb4dc887bd717ed0a26593fe4c350f1203a6d3cf3da37a5c57ea44ddafe9b97e. 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/01f07a2a-4ef1-4320-a2b4-bd900d8227b0.json and https://artists.proofprofile.net/proofs/artist/01f07a2a-4ef1-4320-a2b4-bd900d8227b0.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 0x2a7b8124d5b5f68a987146214d315a72f89f5bf0f2a2d66667f2e511c0696b27. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ES8520900789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbacd5bcfd4372014b397f1e664b237ab09f5215107bb12919ecec75b65204233. 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/ES8520900790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4a1f20fe20b964bfae158e2ecf1643d8839db1455c332df05de2a5e80ee427. 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/ES8520900793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6db61e2fb1f861e79bf6d49e969c23e6fa8c1124459e7a75c9bd7f489fa5a1. 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/ES8520900794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ecba76ceec4b74360486e5d0f74b44af30d623c41d53ce1bb55b2033b450ae. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/ES8520900797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8281a95f49fa1c78ee2bb3fc0c1d1f82ced3f62dd61f0f2c66d021955cff89b3. 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/ES8520900804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6337d790de8ccd8b8ccfa628b7dee721217a015de29f973a08bfe41cf456a16. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/ES8520900807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a972fb66c3d1071ad60539e91f7c6f3a8ff0b0a5dd1ecb76e5e69b5abff908. 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/ES8520900459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56124827b829a72dcdffc5f9971bbd07762bad10771b60bc22b497efcd419e0f. 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/ES8520900460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2777680c75ef11d977179b39a76f36f86dfe6aef6747cd31f975a3e4ed8cc6e6. 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/ES8520900461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ce1f4b4763f3c1385a0345211f1f7c5ec31f6f89f88f31ebb5801fe12e994b. 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/ES8520900462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d5b00a4f07007018a33a0dab319d9675413d584485481d12c9d3ebb6ff041d. 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/ES8520900463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e2f8cbbd7f89d1e20a0675ddad9db61a18e9b153340f84007d5b68fc386fad. 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/ES8520900464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59aa49ef6672e5427b41a6a2d707e7d17d91ca03a30e5f16421604e9b1d215ef. 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/ES8520900465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeade785f11120adb45e1f35c0bc2326ad402974a1eca3d42ca7e6c733794cde. 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/ES8520900466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7180722db96a5d739d892558ab666bf76a6ba8fb2ae4147beff27132339f8f6c. 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/ES8520900467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8be265f5d5c0414ef31a5ca3e0077f7a5cc30be914b708db001000922b3336. 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/ES8520900468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf51912716b007fab62c5863badb3640972fa120e76ff24903a31ca8de129ec4. 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/ES8520900469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751ba74f96808612c89373c4342277fde1917f31a26d4c7c5228ab9c396f2af9. 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/ES8520900470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb39337525f0c77a1e53dec43c5ce17b8320724e0f6e7c9669ccc3fb0b955bf2. 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/ES8520900471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ee02d05efeee17f67a93da11d9dd36a2b08959cc328568aac71e6c27d08321. 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/ES8520900472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e9ca422bc1b3a4be030d2cf6956dd449643f2cdad9d6e0fc375c5b984164a8. 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/ES8520900473.
Pange lingua " more hispano " - New Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21d43a1bbd5b01a518a53a41f804227ae913fb3c4545cefe037b402e2cf8efa. 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/ES8520900474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f492278737a3175dfe189ae1fc9c8cca751657848b4784dc3d06a24ec28dae7. 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/ES8520900475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a3e93d95b9d63db1184984f0a4b5acdfbe705d0537c9d1bc5b835b1a66400c. 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/ES8520900476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a14dc41496bbc6c3ce13b33393fb56d0f68cc24097651723686f151d2f15a00. 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/ES8520900477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9c23bf6a524bc900129ec5db3bdb48969b6c7f822530b9839979749d4cd28c. 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/ES8520900478.