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 0xce08037b6d2578ae316c8e849197cdd2459056c3936dc6ab748e4195cc117cc0. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6df8b154-89b8-4553-9e08-ea2b26a62410.json and https://artists.proofprofile.net/proofs/artist/6df8b154-89b8-4553-9e08-ea2b26a62410.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 0x126da3a91ab11ddefcf1cee94050c080fe16c87990c2bda8e2dc7fb6f19f704f. 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/ARF412300084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20c9857cdcb70e973e9e043192f1bc08ecf81c64a1a3929e2d5fdf69d625923. 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/ARF410500104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20c9857cdcb70e973e9e043192f1bc08ecf81c64a1a3929e2d5fdf69d625923. 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/ARF410500104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b5f407c06822e35915db2a7b721a6e5752924404da2189733c51b54a19d6fc. 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/ARF412300305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7645f52f254b941bada45aaf2e42c457990f64a57990e2f8e71983190d9a0fc2. 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/ARF412200176.
Vintage Café - Lounge & Jazz Blends (Special Selection), Pt. 8
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8068b11eebbd755f9084de6274680dec0eeebe3d8ad88d0eea33040c12ba03e. 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/ARF411601096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac583edf0ab1f1d5849f3d06d2747f1945cdedc69f0245da926bc8b089a843ff. 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/ARF412200382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bdbd906badb574a0b47d35695592c153cb003c3e76d063045d9e6c6a35b4b45. 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/ARF410500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2c6c692b27606e6d9c75240452719c9147807df5911d6217f33fc9f1b7702f. 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/ARF410500186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669be3fe06304a77da0043a63920178e80fbac60cec68bf71871fcd3f4961575. 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/ARF411500262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49673e185775a5495834ef8c185b6fcd29bc59cc2b07a5e0dc20ca119185e5a. 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/ARF410600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669be3fe06304a77da0043a63920178e80fbac60cec68bf71871fcd3f4961575. 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/ARF411500262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc960dd45aed22f8c94bf78d13eed239837a6156a487f689fd471dd2d3b89a10. 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/ARF411300973.
Speed of Sound - Groove Da Praia Bossa Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3151044532a0447195cea433dcfcb0f5a4c6b0414cabcb43a95f1145dc8646cf. 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/ARF412200173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1cf62aeaef62f6b39901a4dbee257e3af8560429d465eb6209631b44a15c659. 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/ARF411800248.
Vintage Café - Lounge & Jazz Blends (Special Selection), Pt. 9
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba914df45b7d387e5fe399c2ce3dd96c7bde1212d1025e57cf66c53dea7c9981. 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/ARF411700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f4bb6d9671065a67d0ca6e1c1c15654e4957e81400d50be725be5c664a847e. 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/ARF411900364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1bc732278a4a71069e5966056afc06cb923bc44d609f4abbb151692fe5b4cb. 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/ARF411900371.