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 0x0885f31fef33a1fd72361ffae77a99d7ee86165da569823c88c43c6a9588a50b. 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/aa74ffe6-e1c0-425e-b6fa-e1ad220b73b8.json and https://artists.proofprofile.net/proofs/artist/aa74ffe6-e1c0-425e-b6fa-e1ad220b73b8.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 0xc8cd44f3076622fc5a6d4a705afb3ae12800f5531259b20eec702693a378d62a. 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/NO62M2201160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7efe877d7f8ee12bf833e7eb1b2d4f1e638afc728017970cde0ca5245646135a. 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/NONUQ2401010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744a3271b9858914690ed0303eb4eff33b2af33e43f661b296e3ad9ab119c999. 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/NO62M2201459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d49f4b94053b63f4452957fc5152f6721397b82b7cebecd1d0fb6353d957aec. 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/NO62M2201496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ba59531671f489faf216d81504c8e90365e262d90cc0f319313c6b7bd0962a. 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/NO62M2201498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc656a8587534bc693d8a6ee94a7fdcd72fe25d04de49ad0f39001ef7989258ff. 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/NO62M2201500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf07c5f29647a5d2c4b42b3c65befbd96ffd33aacf42e3fe15fd4680edfd6208. 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/NO62M2201492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f01279007a11266376c4734dba2f68021742bbcdded4d22655995adcf2593e. 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/NO62M2201478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb4dc5ae9528b1dc500022159ea45429ed75c4e70797d6a5affde4f9725381f. 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/NO62M2201502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506842c2e83fae9e4d9c6d8313c1ee87104449cf92258df5d868397908fb8d1a. 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/NO62M2201504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0a1169b3e5a1ce492fc7a2b70100480ddf36f5c6dd40bbbca1542e670e6765. 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/NO62M2201506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17a2901a91da1947d52c33ad8ee603bbac346dbce661fe0b2feb954d103f0e3. 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/NO62M2201508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17a2901a91da1947d52c33ad8ee603bbac346dbce661fe0b2feb954d103f0e3. 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/NO62M2201508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf07c5f29647a5d2c4b42b3c65befbd96ffd33aacf42e3fe15fd4680edfd6208. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NO62M2201492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf07c5f29647a5d2c4b42b3c65befbd96ffd33aacf42e3fe15fd4680edfd6208. 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/NO62M2201492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f01279007a11266376c4734dba2f68021742bbcdded4d22655995adcf2593e. 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/NO62M2201478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02059ab66f3b70ba47cc4b6bb83361e5da0f073de02f151f06b2204bf1db19f. 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/NO62M2201466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11adacf0d7dc01630a44743e75c003a8594923517d6b70f97315d949e3db5aa2. 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/NO62M2201420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee99670faa67ba041f19b7e974aa35a98cb9df2e8c307eb74ae9770b738739e5. 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/NO62M2201390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21abda3a55d363cbad801054175027fa6dc7a32b93643d7b1a9892f3a5a17ca2. 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/NO62M2201320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8945e2ca0dd065e3a25a2913c75437a2d270ed7f71f7ab4b380aa7f6d32fe2b. 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/SE66Z2200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450238d1a26b3e6b196d1d3914624aef989f9554fd87c2123985ce21417837d5. 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/NO62M2201240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6ae48cca21f35a4bf8322dba12bfccb69cd195cabe2fd5dbf89494daba4b9d. 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/NO62M2201260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdfc4ff5b507dbba1a464d5f00cbc78f7654d4e17229f6329651bbade9e5bc9e. 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/NO62M2201080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598d2ef1f8d0030b4af6beed073889480b799b9e4052109d7614c9caa7aa79d7. 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/NO62M2201070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a5ead5b9db8ff07e111ee43063565fe6894350b3df29d4167ed23a818ad93b. 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/NO62M2201050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8fd0881ad4b5d87d519edd7e4c118f97bfcc048788e9aa18dee6123f82430f9. 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/SE62M2116064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489c99dc442b0a8630c29b387b4de86683b85a0989dc65822f03bc16d956285e. 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/SE6XY2149256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ef6403f5215f1eaa6c1588b2c3e219710437b7cbc35ca7d5dcd4cd08e339ea. 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/TCAFU2199161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c6f83f7b8c8453bb1c35d25dad00eceeb0a3e07906b804e788f46a2af066cd. 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/QZP7F2100294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd9991c1d6edf0d61a5dd5598380f1260a6100f36538e1cb07f1127222d717e. 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/CAWHO2030029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dcbc82e8ddd416b7a55be0b1aea6c68f169f183392f0e9255d4dd4ad61fc1d1. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QMANG2248480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8cd44f3076622fc5a6d4a705afb3ae12800f5531259b20eec702693a378d62a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/NO62M2201160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dcbc82e8ddd416b7a55be0b1aea6c68f169f183392f0e9255d4dd4ad61fc1d1. 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/QMANG2248480.