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 0x6e2973cba5f95e31a983cd332d04b715c72c7230e14a98e6247c18cc2f0e03a6. 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/8e2206d8-2ca0-40b7-ac4b-03180c52d61e.json and https://artists.proofprofile.net/proofs/artist/8e2206d8-2ca0-40b7-ac4b-03180c52d61e.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 0x2713bf823c1e9b08ad7df324d418f7fce49e9ae41279b6476786961cb5ddbbd0. 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/TCACJ1590783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a48305af028cf28503931f5a102b1e64907938e49f6db75b1dba2317873af2. 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/TCACJ1590785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756ecce88ccfcbd1dc40f4306858012553d3f5625d2b60f8537bd3bd556c30ba. 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/TCACJ1590788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece292a41666c7ec5573fe8033a74df6a7739b88488e3f406bc647abe7cde531. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/TCACJ1590792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6ca6555fe2301a808bc2946895c83399431b506c48df3c418adf979d73d661. 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/TCACJ1590794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2174876039551f659f88217df39dc7d3ff9728bf6ad8953ddb8b8bf15cef82bb. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/TCACJ1590801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd1287d0226a08dbb8635bcc1308b9784e3c656587874f71edbf3a898c2f30b. 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/TCACJ1590807.
Anywhere the Wind Blows (feat. Envy Hunter)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dfc59ca7d705fe4208b797febd8c6153c4ca5786e29911d20bbf4294a7c4f15. 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/TCACJ1590814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044c285bdb1c675d002976869d3a8220864d13e7cc5c96f968bb3ffada20787f. 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/TCACJ1590824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c15a9ba8373275022882c239f62d9d3af88980522516f48d46575f884bf3b4. 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/TCACJ1590838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb406a1291631b3694db77a0bdbfca6a505ed7d92570858130e455b850315e4. 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/TCACJ1590840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c8c40415315e77771d26278330fec9a5bc768fd02eea64b11a6bde20cee404. 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/TCACJ1590853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be762de0593874a668cd3425199918888abc2445bd552179b2702405d11df91. 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/FR9Z61800069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15316bfb3b6ab678ab13b0781c4ea1cf94303e30171dcb9fca383e6635ff02f. 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/QZTB32446523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4680aa9380b3af7fa8d3a075364128874cdaeadb5e1400916ae2c0ac98c6d44. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/QZRP42223918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b91e7d767428ec422d230c526ee082a9fd93aeb304b72ff1c5b30aa1fbec5aa. 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/QZDA52109806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68054746cb96b62eccdeaa358d482c0225737a735b798f92beeb7f70086b77b4. 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/QMPKX1774733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb479adb8480c68b4a9d5f898a7a8f346b8eefe6589213013e8be9099ff9db4. 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/QMPKX1774734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1195a1ed64168c82e8af9eee019663179290eaa8c364ed9cd525b021ae7b66b7. 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/QMPKX1774735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96313cd615958a7b00f1820ec597ee82c7069759982562320da76ca78dfc7a42. 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/QMPKX1774736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04e756578b652873c9f094c2d3d2e71c349dc5c8281ea78bc23e95fd5983a1b. 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/QMPKX1774737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c3a98634e09fd0727f6f5d50fef0847a82b04c6a9ad91663e4fac7c6f98f90a. 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/QMPKX1774738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84663cdbcdef361ba14aac02a502735c8bd01d91838b96a358b6b9f7de0f55ee. 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/QMPKX1774739.
Gifted Unlimited (feat. Hex One & Dephlow)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0375b047f4e7436ab6332e65201f30c27269facda06926f973f4a76d78f6f7fa. 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/TCACJ1527852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1b656997eac54de30304c193e9bbba6d1c4889d2be453cc98d727866d6e548. 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/TCACJ1527858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54cfcc0f0ef338b2c2e50d34bb0c14c7b5c2ef6a03e4a303576cb01b8ba5b878. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/TCACC1438408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97002452badea9496f67fc2d15c6747ec8b86b2d34e00ec7db8678f680f31567. 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/QMPKX1430476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4c4c378323594f5a0fa332136fda8db2e54a2688c73fef94ff10cf813b15c1. 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/QMPKX1430477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4e9e740061aa00887e7473ce184932605bfa562a5392311b6976201b1c3aa5. 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/QMPKX1430478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89141754c4fba8ec07cdf2cb66c5f4ddfabe6b66adc703387d3c147088016bc4. 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/QMPKX1430479.