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 0x4dce67e99f826e769f11fb7ec09d5bdfeccc251d89acf5eb32deef31bc7b7cd1. Chain 2 (Bitcoin): anchored in block 953612 (2026-06-14T08:22:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/15183532-b421-49bd-819e-7b6ec3f85781.json and https://artists.proofprofile.net/proofs/artist/15183532-b421-49bd-819e-7b6ec3f85781.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 0x782f8edc4b06282421c69f926b1008af6f7a696db141414ff1d4a3a65d45bc65. 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/TCABY1455273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd883f2a68bdf7c18b1d5dbbd56aac3db0d55715612d361f0cabb58332c550ca8. 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/TCABY1455278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4df6a858f4057bb6e65eb3d5adb7ec7ffe5f8be36d2a1fab9c6a012fa5e9a9. 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/TCABY1455280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d73092bacc479a9e8af7601034d63691f8aed69100dac981215a785c251828. 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/TCABY1455281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17bd58d9b23f3b825f55731d438332e44201302cd0bd8a010cf7ed6f6e1214f3. 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/TCABY1455283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a8331803c8d2e4c69dbfab121a63e42c88e8c952b0c8aa5d6a0176174e4fc0. 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/TCABY1455285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed61cb02db1028365afa5852c7c7f5d26a77353d0b20f3b2fff43616bed061c5. 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/TCABY1455286.
Everybody Wants to Rule the World (feat. Argenis Brito)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19ec6b0aa20e55ace098962020a87928577eee4becd6d3bc89fa2352b6fa4ef. 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/TCABY1455289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694e5ebee83c0f54889bb8a0491ed6004a85adb1a8512e1f56e87bb55a742404. 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/TCABY1455292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555d7e28155ad5147f009bffea712d7d89d7171fbe1f0ef87478f715c466324a. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/TCABY1455291.
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 0xa240aab19a4f154a10089bf1b8a8ca0733b49832c2f2de6bf597a01cef0477c5. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/TCABY1455293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3411ba55f9ec0bc7c4723ca0f92192ef586bc4fbcff372ec57ac25c94f36fd2. 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/TCABM1342998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6446eed7581fe71c1402d2bd49f9e3c26d15c4e4c7751ec37c9188743fc040c. 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/TCABM1343004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11dc9f139660a07208f59a35c03219c98047892de5b1bb2b112b116544e686e7. 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/TCABM1343013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf895ee43b884ae6401cee1b6624c7f65ab3165dd5a42ac31c6af386fde447354. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/TCABM1342952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d4acd6b0005bc1182a779da44827ec9984439ed3099575a0d1655cfdf7d71f. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/TCABM1343001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab8c9cdfd8f6d9c034d4ea6ab45f4ebec66f57f12496fa4b540077cd12e6cf1. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/TCABM1343009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad10c4c2ee6cdb2007714a6a30bd869a8aedcbbc95c3e3d35a919a00adf5f3a. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/TCABM1343015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc64d48c29fc1ce0457549e56d5765b39ef7b16e6f8e16e0a692fdccb3c90b0b. 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/TCABM1343020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64589ec75f36b8df690437c8411ae7d8f25fd13f29b5a54e6c241588b5b945ad. 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/TCACX1725105.