thumb|right|A grainy image of Dany Placard Dany Placard is the stage name of Dany Gauthier (born 1977), a Canadian singer-songwriter from Laterrière, Quebec.Alain Brunet, "Dany Placard, sors de ce cor
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 0xfd22e3252c9c8a154cdecf0106a64c427e859f2bd3c651ae226e01e050b1166d. Chain 2 (Bitcoin): anchored in block 953691 (2026-06-14T20:39:17Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6bdbe460-e7a7-489d-b8cb-6be89764e5da.json and https://artists.proofprofile.net/proofs/artist/6bdbe460-e7a7-489d-b8cb-6be89764e5da.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 0xe1f9b1482733c9274cbb1e1a80f900b0e57d9ac752690361f2e59602d12a15be. 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/CA50N2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7107fb1e0a624f49a6b7f34018fa2368896b40319e26a0039abac65ca8d8e5b6. 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/CA50N2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4036289a0f7460d2eab388a6c308c3d33d12a52998315fe705cdbc0680246e. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/CA50N2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38157c75ab82a93b123f7663079f0e3cbe0630fd99657d233f2998b0bfc6a067. 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/CA50N2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d2d416415082ff5f6c08d8f1f89e1c75aaff1d71f0e7f60a10329120f3f379. 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/CA50N2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1510c2058efb50b44b6efc54ef6c8b1817152e509bed3d2bef9616848383cd. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CA50N2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3c8b11bd2bc03f4cc73ace6dbc883f2a2913b4208bb0fef8aa984cec54227f. 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/CA50N2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7feeabb5ca8b1d284ad3d8f4d93d3aba326ba7434f460e0ef9018aa26d2a0d. 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/CA50N2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7bbf262f04818b56b71348315228f7ed36e7f078abb466e4fb535077d97241c. 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/CA50N2110001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cdf1484c5e1725d9c4ea1be1269a07b17bd4dd2a738b4f2f2c4a656affd689f. 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/CA50N2110002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1a656246dd59d01cdfb1dc8071aeeb59e786028dd8ef8c615b55eccf36fcba. 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/CA50N2110003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885b21e04812c668f996377f99c4d87470ff2117ee068af558be988d2bba6965. 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/CA50N2110004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ea269a7b490ad1e60fbe3ff352f72d23be278ca51dce7b7fa0088dc31d5e1d. 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/CA50N2110005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa746ee8e6f74f0ce202bf549de2f91ad916d3c37f8db813de0e6b76256840207. 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/CA50N2110006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9096e04c8e02d29b9b1c20b7e45fd8f86cf7b5a898b7d0bed5510c7c3c00950. 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/CA50N2110007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a97bc68cae102d5396f41249f94efd5c65f38f2a5d529b55b16246e1a55c8b3. 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/CA50N2110008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe858519e735ba4ee757e0e26c6aa888cffa229d7d7e5252efc8ddbf28ea630. 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/CA50N2110009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6125d1c723eebe8f279abb93e6e5f894eb7023c74f3b8174a5801690502d653. 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/CA50N2110011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d331ca2ab420542ef82cb15132c0e69df5b5bc3ee5d7aeee89dd85516a2e048. 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/CA60L1940002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9490f4bb0058440be5940228920debb497da9a8c80d5b31f0c39916a6957a469. 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/CA60L1940007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828aec96fd726883b4213841ea17fdc332b3581a6afdec395ad52d4c1e0c1339. 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/CA60L1730002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb044efff5936a529984edc4d19785ce6a9361c60b9dd35556fcaa02d0b8e40. 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/CA60L1730008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f4de5c82a15b72953dc775ba25171c8093c38af1cb71d1b92e80af62466fe2. 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/CA60L1730009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96984933b2bd8c544eb99f8f111b751c6e9ffebe08beb3f5192fb54871a27c0. 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/CA60L1730011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed552aa934d15a5e733583217ad0ad1be4ab44d7d46fd2a4bd219f41c683515. 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/CAN501612051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3e5761a1a2537bbe482dc84b028e4202564b07bc0137b14c7884d7da795cc2. 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/CA60L1430002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0338f16a15223c9d3880e00e5448a8c345a046d4ff76e71b3b4bba8a59a1ad4. 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/CA60L1430004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5f79e56ad506f770a9e6ba0fb8f3648119a4421313a6fbb44617be8390eeb2. 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/CA60L1430005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b3eb064a6c8519186fa0dc07a5f21eae5d0866926dbea605c2e837c29b60b1. 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/CA60L1430008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e278e322608b83dd22da6422cd63c4005a90d829f9544b41369157ed992d52. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:27:47Z), 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/CA60L1430009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0253afbbb67af7687556c378aee4bb6ff98befb366a57a69cb65793dce6859. 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/CA60L1200031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e6824579fd8e727a1aa7a2e1948d67dfd7e051bcf8eab49e2758bfbd2b8248. 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/CA60L1200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372e948c532de3b4c7a6c2e7e41a8246bafef33ee40a0b7d6df908066bfa3065. 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/CAN501612029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f9b1482733c9274cbb1e1a80f900b0e57d9ac752690361f2e59602d12a15be. 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/CA50N2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe858519e735ba4ee757e0e26c6aa888cffa229d7d7e5252efc8ddbf28ea630. 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/CA50N2110009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7bbf262f04818b56b71348315228f7ed36e7f078abb466e4fb535077d97241c. 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/CA50N2110001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1a656246dd59d01cdfb1dc8071aeeb59e786028dd8ef8c615b55eccf36fcba. 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/CA50N2110003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa746ee8e6f74f0ce202bf549de2f91ad916d3c37f8db813de0e6b76256840207. 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/CA50N2110006.