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 0xe18c1c5cf613a50cd351993f885e9d94ef549f07fc47493277055ade5a7aca91. 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/4448b7a0-9e36-469c-ad47-84ac30d3662d.json and https://artists.proofprofile.net/proofs/artist/4448b7a0-9e36-469c-ad47-84ac30d3662d.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 0xb4ff402d2ace3242fc278cfaa0b85534bed311aa220bd09311e565ee1ede3e74. 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/QZFML2146861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398e2e19902451d9b16ea6b338cfa854af4eaf371df79042070d497e54a40835. 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/QZFML2146862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33aaa4897ec159ecfeb5507b25f43cf184c11ba398572aa374b9febaa018aed3. 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/QZFML2146863.
Beruhigende Klaviermusik für schläfrige Hunde
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910d6d5fe3108313f6e045a3a95f7c8b6019c9f3ff2e843b1441c4948e5b0e29. 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/QZFML2146851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89754a16ad036ad397c32a9b6d1d1c9c2a520d06769a72860b66468bceead6e4. 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/QZFML2146852.
Entspannende Schlafmusik für Hunde während der Abwesenheit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5f29f134371be44fb9fc4b540761cce581e13cce69fa05053e9ba00354b714. 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/QZFML2146841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5345fad1ece4ef0e43ad14413ba014a5a203cd26b1f460a4c234b0481f5013d3. 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/QZFML2146842.
Zwei Stunden beruhigende Musik für Hunde
Beruhigendes Instrumental mit Meereswellen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4045617c5a6387cdd2d9721e82baafc247f25caadfa106c4455c76a404a400. 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/QZFML2146831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x782afb8056f4c1c59567656610bef7aa38f63c07e822e5cb64cd0e7a87b73775. 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/QZFML2146832.
Eine Stunde entspannende Musiktherapie für Hunde
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f9723d90e5ff2d98a1c2618fcda1e32fee8a1cf39704819469ba3f48c7e69a. 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/QZFML2146821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c17066519cb18e07ba246c3ed3b3bfda9ae74b11cb67bcbc2faf0c73a123984. 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/QZFML2146822.
Beruhigende Lieder für die Hundeschlaftherapie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6fb4f76cfdaa40bc1009e51a2904814c67feeb2319036e283b38734b89a7307. 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/QZFML2146811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd06ad52c070e2047442102d9ae8c977a039d7603c1ea2ea0e0ad58ec27cbe76. 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/QZFML2146812.
Eine Stunde beruhigende Musik zur Entspannung von Hunden
Friedliches Instrumental mit Ozeanwellen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5adb69cc15cdd2c999e3738ba4e700fc909b3e8b9e49a0b18431a9117254b83. 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/QZFML2146801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4f940e33ea403ab4b19bf92082f688506292da84f9b49c11defc54ac2d32d5. 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/QZFML2146802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dfcd8067786e7deda13d859424804af425fa2761f16334494965aa8da92236d. 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/QZFML2146805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6fb4f76cfdaa40bc1009e51a2904814c67feeb2319036e283b38734b89a7307. 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/QZFML2146811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd06ad52c070e2047442102d9ae8c977a039d7603c1ea2ea0e0ad58ec27cbe76. 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/QZFML2146812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ab34288512a03c4b6febd27069d1a4a24276835dd9975e067433d6220f4163. 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/QZFML2146813.
Entspannendes Instrumental für den Schlaf
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe671544de6dbab114d11c2cdfa789fc572b83b7cd0ff21d44520e8a6d10150. 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/QZFML2146818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f9723d90e5ff2d98a1c2618fcda1e32fee8a1cf39704819469ba3f48c7e69a. 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/QZFML2146821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c17066519cb18e07ba246c3ed3b3bfda9ae74b11cb67bcbc2faf0c73a123984. 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/QZFML2146822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091cd46fb444e34dbfd65d6ec41bec7a3c972570de5ad1a087a6f65011826eae. 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/QZFML2146827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4045617c5a6387cdd2d9721e82baafc247f25caadfa106c4455c76a404a400. 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/QZFML2146831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x782afb8056f4c1c59567656610bef7aa38f63c07e822e5cb64cd0e7a87b73775. 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/QZFML2146832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d34dfd753a9c2ddf8e13c4d27d17cf70f850c612a35683e64bf00ee30b6024f. 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/QZFML2146838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5f29f134371be44fb9fc4b540761cce581e13cce69fa05053e9ba00354b714. 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/QZFML2146841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5345fad1ece4ef0e43ad14413ba014a5a203cd26b1f460a4c234b0481f5013d3. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZFML2146842.