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 0xf78bada6b48d42ffa282b5f15140dbc711b884702b507cb85adb85dff616753f. 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/fdc6fe2a-5ebf-401b-981a-f2a803e16839.json and https://artists.proofprofile.net/proofs/artist/fdc6fe2a-5ebf-401b-981a-f2a803e16839.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 0x54bca6d196d4f2bc4cfe0c627b73384f558e14dfaa4928d1ddd644dab11aad54. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/MXF152300725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb925a0dcc162614be948618e302eba5ff3569779e3c38803a1cdfb919b17295. 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/QZDA42231822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184e55a86e76bfd1c86e048358f733bb89c441c3e91a53595bfef37f5e7cdb50. 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/FR59R2115723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe055ca5f38c092b0188817164fa0d1722431fe28d53b7d8e1c50e78ed386daf6. 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/FR59R2115724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356b13e38d40fbfd1b2651056fc7772ad349f56bed7d990034ed5f0655cea810. 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/FR59R2115725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe11ed9ded48cbc6aaffcc558c64e43deca13b735e6b86cdc1afaceb1cc2d33. 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/FR59R2115726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeceff54f687ffa3fda7463bed5c0137a6328beab20da50e88f32214095ad5b54. 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/FR59R2115727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb2d8fbf9717db0b160dcb4a8bbc81bb3723a2602902d2c7a31f3eefd4002ff. 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/FR59R2115728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd5b6790a430e4a1b2dae0d08584cc65ca38007415883c8a082ee978ff4019e. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/FR59R2115729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4158757d46ce06eb0a2334a176e898e2c980b5a8f819c1ad56a493358c4ad3a7. 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/FR59R2115730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8e63b8130f39c88edc25b59c7a8d9b021f9ecf9a71a2128e023a5af54f2003. 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/FR59R2115731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85172b7e168ad6bc70a62e52e65d6a9a4a4d3f1ca9bc92ac9f938fd9c178aef2. 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/FR59R2115732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70380d05f672f48ba12535fe2ced539b71886e9c4d55edea5998419d8516ab6c. 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/FR59R2115733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c885840c2dae97ea4b482c90fe9c7a51d7b12a90a1660e857abd9273ed59fba. 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/FR59R2115734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddfed1379ff7cfa1582a6eb63055c341bdc963565cc4d3712b99d92c127a3942. 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/FR59R2115735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb491be5d6acc4fe1af404ef4cea6cb42387e4cf4209d5480a229c206887f6cb5. 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/FR59R2115736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21d1fff14512b3afdf2b92529af308e88631f50863a08b5b24c972fc8b0ba8d. 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/FR59R2115737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44cc9c0dc62045543797c7980e83be4120fad91e2ad0310ebfa3dacfdc743e32. 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/FR59R2115738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6071797a20be34e434c2807f4fd87d5e1b359f4298d5d90d1a3dbcc6a72bd47. 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/MXF152300724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed0c791f79f3ccf9b1e2a28f72b14151056e03075dfb87114b00521f14d140b. 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/QZGLS2294655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaea60cdd4c5ada190400cd569d813a2e3caab5fefb28feb87832fe0579afb0e. 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/FR2X42180304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf145fa4e6a5f38eb12b80fc99e535a2491f85a8a1d470824292ceb73aa4b211c. 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/DGA072139580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e5c2f6ff6c360d8a4fd72b4c0d91649061f70b1cf8a284fa6097b34e4f51a5. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QM7282011620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5934da31a2e5b6e46c9215dfc9a509ce79887290ba5c722dd541485f27b1e4. 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/USDY42093506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1852ce82e6487bdde52fa3bb58539395089678a9cfd22ed3fc812f1b8846d108. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/MXE671900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c9419d0cd90b3e913b6a1df5b1efea3db8746d9d050d05af8bc0251aa35168. 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/MXE671800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6735d1687ff1f90ee9f6e44c1866b04c1d248b400d4f1254d2144b4842a601d. 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/QZ5AB1710620.
Зоряний саундтрек (MalYar & Beat Boy Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa996b5b8badb063fd4b11e0ae6f4766a8db7b9059db26e4b448ed3db9535a99a. 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/UAUG11600736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c782bcfb96d66d514d4f1d30eb2fff8fcafef6af098bf167ea68851c5b52b49. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/GBCGN9500151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb832e21ddccd9c84fd25994251320937219ed3eb97e1ecadbc0a977fb88df094. 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/QZMZ92479151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320431b5fee41fb1b2f3eecc21fc6a2460f752bbfad52dd65b597aaa81ccfe9d. 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/MXF152400123.
87COLLABx01 (feat. Saak, Beatboy, Papatinho)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eee4a2101ddd054b423af285ea2bd5a22b9a0725dee385eeba7346313bfe007. 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/MXE672000001.